[vispy] 01/10: Imported Upstream version 0.2.1
Frédéric-Emmanuel Picca
picca at moszumanska.debian.org
Sat Aug 30 17:17:30 UTC 2014
This is an automated email from the git hooks/post-receive script.
picca pushed a commit to branch master
in repository vispy.
commit c568db47739f607192f5a6d624e1bc073172b26f
Author: Picca Frédéric-Emmanuel <picca at debian.org>
Date: Wed Feb 19 15:15:44 2014 +0100
Imported Upstream version 0.2.1
---
.gitignore | 9 +
LICENSE.txt | 49 +
README.md | 44 +
_link_vispy.py | 47 +
codegen/createglapi.py | 140 +
codegen/headerparser.py | 338 +
codegen/headers/gl2.h | 620 ++
codegen/headers/gl2ext.h | 2051 +++++
dev/disc_collection.py | 113 +
dev/visual_experiments.py | 33 +
doc/.requirements | 3 +
doc/Makefile | 160 +
doc/_templates/localtoc.html | 10 +
doc/_templates/navbar.html | 4 +
doc/_templates/navigation.html | 12 +
doc/_templates/versions.html | 9 +
doc/app.rst | 32 +
doc/architecture.svg | 689 ++
doc/conf.py | 282 +
doc/event.rst | 36 +
doc/ext/docscrape.py | 502 ++
doc/ext/docscrape_sphinx.py | 227 +
doc/ext/examplesgenerator.py | 139 +
doc/ext/glapigenerator.py | 77 +
doc/ext/gloooverviewgenerator.py | 94 +
doc/ext/numpydoc.py | 166 +
doc/ext/scriptnamemangler.py | 30 +
doc/ext/vispy_ext.py | 26 +
doc/gloo.rst | 83 +
doc/index.rst | 37 +
doc/make.bat | 190 +
doc/releasenotes.rst | 30 +
doc/shaders.svg | 1318 +++
doc/themes/scikit-image/layout.html | 113 +
doc/themes/scikit-image/search.html | 46 +
.../static/css/bootstrap-responsive.min.css | 9 +
.../scikit-image/static/css/bootstrap.min.css | 9 +
doc/themes/scikit-image/static/css/custom.css | 232 +
doc/themes/scikit-image/static/img/favicon.ico | Bin 0 -> 10134 bytes
.../static/img/glyphicons-halflings-white.png | Bin 0 -> 8777 bytes
.../static/img/glyphicons-halflings.png | Bin 0 -> 12799 bytes
doc/themes/scikit-image/static/js/bootstrap.min.js | 6 +
doc/themes/scikit-image/static/js/docversions.js | 21 +
doc/themes/scikit-image/theme.conf | 4 +
doc/util.rst | 39 +
doc/visuals.rst | 8 +
examples/app/app-event.py | 62 +
examples/app/app-glut.py | 68 +
examples/app/app-pyglet.py | 63 +
examples/app/app-qt.py | 62 +
examples/app/simple.py | 37 +
examples/benchmark/simple-glut.py | 43 +
examples/benchmark/simple-vispy.py | 33 +
examples/demo/atom.py | 192 +
examples/demo/boids.py | 187 +
examples/demo/cloud.py | 303 +
examples/demo/fireworks.py | 150 +
examples/demo/galaxy.py | 197 +
examples/demo/game_of_life.py | 156 +
examples/demo/markers.py | 229 +
examples/demo/show-markers.py | 117 +
examples/glsl-sandbox-cube.py | 184 +
examples/howto/animate-images.py | 117 +
examples/howto/animate-shape.py | 114 +
examples/howto/client-buffers.py | 187 +
examples/howto/display-lines.py | 138 +
examples/howto/display-points.py | 104 +
examples/howto/display-shape.py | 66 +
examples/howto/hello-fbo.py | 130 +
examples/howto/rotate-cube.py | 173 +
examples/howto/split-screen.py | 181 +
examples/howto/start.py | 17 +
examples/rawgl/rawgl-cube.py | 202 +
examples/rawgl/rawgl-fireworks.py | 222 +
examples/spinning-cube2.py | 121 +
examples/texturing.py | 112 +
make/__init__.py | 6 +
make/__main__.py | 13 +
make/make.py | 406 +
nosetests.py | 6 +
setup.py | 105 +
stdeb.cfg | 7 +
vispy/__init__.py | 104 +
vispy/app/__init__.py | 65 +
vispy/app/application.py | 204 +
vispy/app/backends/__init__.py | 28 +
vispy/app/backends/glut.py | 432 +
vispy/app/backends/pyglet.py | 343 +
vispy/app/backends/qt.py | 322 +
vispy/app/backends/template.py | 170 +
vispy/app/canvas.py | 616 ++
vispy/app/tests/qt-designer.ui | 58 +
vispy/app/tests/test_backends.py | 140 +
vispy/app/tests/test_qt.py | 53 +
vispy/app/timer.py | 155 +
vispy/data/crate.bz2 | Bin 0 -> 55642 bytes
vispy/data/cube.obj | 36 +
vispy/data/triceratops.obj | 8492 ++++++++++++++++++++
vispy/gloo/__init__.py | 88 +
vispy/gloo/buffer.py | 870 ++
vispy/gloo/framebuffer.py | 351 +
vispy/gloo/gl/__init__.py | 76 +
vispy/gloo/gl/_constants.py | 315 +
vispy/gloo/gl/_constants_ext.py | 96 +
vispy/gloo/gl/_desktop.py | 158 +
vispy/gloo/gl/_desktop_ext.py | 30 +
vispy/gloo/gl/desktop.py | 165 +
vispy/gloo/gl/ext.py | 9 +
vispy/gloo/globject.py | 153 +
vispy/gloo/program.py | 651 ++
vispy/gloo/shader.py | 343 +
vispy/gloo/tests/test_buffer.py | 410 +
vispy/gloo/tests/test_framebuffer.py | 206 +
vispy/gloo/tests/test_globject.py | 217 +
vispy/gloo/tests/test_program.py | 155 +
vispy/gloo/tests/test_shader.py | 89 +
vispy/gloo/tests/test_texture.py | 260 +
vispy/gloo/tests/test_variable.py | 127 +
vispy/gloo/texture.py | 724 ++
vispy/gloo/variable.py | 458 ++
vispy/shaders/__init__.py | 0
vispy/shaders/shaders.py | 393 +
vispy/shaders/transforms.py | 334 +
vispy/util/__init__.py | 11 +
vispy/util/color.py | 5 +
vispy/util/dataio/__init__.py | 132 +
vispy/util/dataio/wavefront.py | 365 +
vispy/util/event.py | 543 ++
vispy/util/keys.py | 105 +
vispy/util/ordereddict.py | 127 +
vispy/util/ptime.py | 32 +
vispy/util/six.py | 404 +
vispy/util/test/test_emitter_group.py | 205 +
vispy/util/test/test_event_emitter.py | 421 +
vispy/util/test/test_vispy.py | 6 +
vispy/util/transforms.py | 148 +
vispy/visuals/README | 4 +
vispy/visuals/__init__.py | 2 +
vispy/visuals/base.py | 17 +
vispy/visuals/box.py | 6 +
vispy/visuals/camera.py | 8 +
vispy/visuals/curve.py | 0
vispy/visuals/data.py | 116 +
vispy/visuals/image.py | 0
vispy/visuals/layout.py | 4 +
vispy/visuals/light.py | 0
vispy/visuals/line.py | 369 +
vispy/visuals/mesh.py | 7 +
vispy/visuals/particle.py | 5 +
vispy/visuals/text.py | 0
vispy/visuals/view_box.py | 9 +
vispy/visuals/visual.py | 149 +
vispy/visuals/volume.py | 0
153 files changed, 33693 insertions(+)
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..39789f1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,9 @@
+*.pyc
+*.pyo
+doc/_build
+/_website
+/_gh-pages
+/_images
+build
+dist
+MANIFEST
diff --git a/LICENSE.txt b/LICENSE.txt
new file mode 100644
index 0000000..22c7511
--- /dev/null
+++ b/LICENSE.txt
@@ -0,0 +1,49 @@
+Vispy licensing terms
+---------------------
+
+Vispy is licensed under the terms of the (new) BSD license:
+
+Copyright (c) 2013, Vispy Development Team
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+* Redistributions of source code must retain the above copyright
+ notice, this list of conditions and the following disclaimer.
+* Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+* Neither the name of Vispy Development Team nor the names of its
+ contributors may be used to endorse or promote products
+ derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+Exceptions
+----------
+
+The examples code in the examples directory can be considered public
+domain, unless otherwise indicated in the corresponding source file.
+
+
+The Vispy Development Team
+--------------------------
+
+The Vispy Development Team is the set of all contributors to the Vispy
+project. The core team that coordinates development consists of:
+
+ * Luke Campagnola
+ * Nicolas Rougier
+ * Cyrille Rossant
+ * Almar Klein
+
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..84192f2
--- /dev/null
+++ b/README.md
@@ -0,0 +1,44 @@
+## Vispy: interactive scientific visualization in Python
+
+Main website: http://vispy.org
+
+
+### Description
+
+Vispy is a collaborative project that has two main goals:
+1) To make it easier to use OpenGL (also in the browser)
+and allow more sharing of code between visualization projects.
+2) To create fast, interactive and beautiful (i.e. high quality)
+visualizations, using a high level interface (also for big data).
+
+
+### Installation
+
+Vispy runs on Python 2.6 and higher, including Python 3. Vispy depends on Numpy and PyOpenGL.
+Since Vispy is pure Python, installation is easy, for instance via `pip install vispy`.
+
+
+### About us
+
+The core development team consists of Luke Campagnola, Almar Klein,
+Nicolas Rougier and Cyrille Rossant. We have each written our own
+Python visualization toolkit (PyQtGraph, Visvis, Glumpy and Galry,
+respectively), and decided to team-up.
+Vispy will eventually replace all of our visualization libraries, so
+you can expect vispy to have all the features of our respective
+toolkits combined, and more.
+
+
+### Contributions
+
+You want to help out? Fork our repo and come up with a pull request! Or discuss new ideas in the mailing list.
+
+
+### More information
+
+ * Have a look at the code at http://github.com/vispy/vispy
+ * Our mailing list is at: https://groups.google.com/d/forum/vispy
+ * API documentation is at http://vispy.readthedocs.org
+ * Visit our gallery for examples: http://vispy.org/gallery.html
+ * View the [wiki](http://github.com/vispy/vispy/wiki) for more information about this project.
+
diff --git a/_link_vispy.py b/_link_vispy.py
new file mode 100644
index 0000000..7094098
--- /dev/null
+++ b/_link_vispy.py
@@ -0,0 +1,47 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Almar Klein
+# (new) BSD License.
+
+"""
+This module provides an easy way to enable importing a package event
+if it's not on sys.path. The main use case is to import a package
+from its developmment repository without having to install it.
+
+This module is sort of like a symlink for Python modules.
+
+To install:
+ 1) Copy this file to a directory that is on the PYTHONPATH
+ 2) Rename the file to "yourpackage.py".
+
+If the real package is in "yourpackage/yourpackage" relative to this file,
+you're done. Otherwise modify PARENT_DIR_OF_MODULE.
+
+"""
+
+import os
+import sys
+
+# Determine directory and package name
+THIS_DIR = os.path.abspath(os.path.dirname(__file__))
+MODULE_NAME = __name__
+
+# Override if necessary
+PARENT_DIR_OF_MODULE = os.path.join(THIS_DIR, MODULE_NAME)
+
+
+# Insert in sys.path, so we can import the *real* package
+if not PARENT_DIR_OF_MODULE in sys.path:
+ sys.path.insert(0, PARENT_DIR_OF_MODULE)
+
+# Remove *this* module from sys.modules, so we can import that name again
+# (keep reference to avoid premature cleanup)
+_old = sys.modules.pop(MODULE_NAME, None)
+
+# Import the *real* package. This will put the new package in
+# sys.modules. Note that the new package is injected in the namespace
+# from which "import package" is called; we do not need to import *.
+__import__(MODULE_NAME, level=0)
+
+# Clean up after ourselves
+if PARENT_DIR_OF_MODULE in sys.path:
+ sys.path.remove(PARENT_DIR_OF_MODULE)
diff --git a/codegen/createglapi.py b/codegen/createglapi.py
new file mode 100644
index 0000000..1e6e7e3
--- /dev/null
+++ b/codegen/createglapi.py
@@ -0,0 +1,140 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Script to create an OpenGL ES 2.0 API
+
+The header file for the OpenGL ES standard is parsed to obtain a list
+of constants and functions.
+
+At this point, the constants are fully parsed by ourselves, but for the
+functions we inject the corresponding function of PyOpenGL. Later on,
+we may create functions that hook into the OpenGL library themselves,
+or that pipe the OpenGL commands to elsewhere, such as a WebGL instance.
+
+"""
+
+import os
+import sys
+
+from OpenGL import GL
+
+THISDIR = os.path.abspath(os.path.dirname(__file__))
+GLDIR = os.path.join(THISDIR, '..', 'vispy', 'gloo', 'gl')
+
+
+# We need header parser
+sys.path.insert(0, THISDIR)
+
+# Load parser
+from headerparser import Parser
+
+PREAMBLE = '''"""
+
+THIS CODE IS AUTO-GENERATED. DO NOT EDIT.
+
+%s
+
+"""
+'''
+
+
+def create_constants_module(parser, extension=False):
+
+ # Initialize
+ lines = []
+ lines.append(PREAMBLE % 'Constants for OpenGL ES 2.0.')
+
+ # __future__ import
+ lines.append('from __future__ import print_function, division, absolute_import\n')
+
+ # Import enum
+ lines.append('from . import _GL_ENUM')
+ lines.append('\n')
+
+ # For extensions, we only take the OES ones, and remove the OES
+ if extension:
+ constantDefs = []
+ for c in parser.constantDefs:
+ if 'OES' in c.cname:
+ c.cname = c.cname.replace('OES', '').replace('__', '_').strip('_')
+ constantDefs.append(c)
+ else:
+ constantDefs = parser.constantDefs
+
+ # Insert constants
+ for c in sorted(constantDefs, key=lambda x:x.cname):
+ if isinstance(c.value, int):
+ lines.append('%s = _GL_ENUM(%r, %r)' % (c.cname, c.cname, c.value))
+ else:
+ lines.append('%s = %r' % (c.cname, c.value))
+ lines.append('')
+
+ # Write the file
+ fname = '_constants_ext.py' if extension else '_constants.py'
+ with open(os.path.join(GLDIR, fname), 'w') as f:
+ f.write('\n'.join(lines))
+ print('wrote %s' % fname)
+
+
+def create_desktop_module(parser, extension=False):
+
+ # Initialize
+ lines = []
+ doc = 'OpenGL ES 2.0 API based on desktop OpenGL (via pyOpenGL).'
+ lines.append(PREAMBLE % doc)
+
+ # __future__ import
+ lines.append('from __future__ import print_function, division, absolute_import\n')
+
+ # Import constants and ext
+ if extension:
+ lines.append('from ._constants_ext import *')
+ else:
+ lines.append('from ._constants import *')
+
+ lines.append('\n')
+
+ # For extensions, we only take the OES ones, and remove the OES
+ if extension:
+ functionDefs = []
+ for f in parser.functionDefs:
+ if 'OES' in f.cname:
+ f.cname = f.cname.replace('OES', '')
+ functionDefs.append(f)
+ else:
+ functionDefs = parser.functionDefs
+
+ # Insert functions
+ lines.append('_glfunctions = [')
+ for f in sorted(functionDefs, key=lambda x:x.cname):
+ # Add "super-function" if this is a group of functions
+ if isinstance(f.group, list):
+ if hasattr(GL, f.keyname):
+ lines.append(' "%s",' % f.keyname)
+ # Add line
+ if hasattr(GL, f.cname):
+ lines.append(' "%s",' % f.cname)
+ else:
+ print('WARNING: %s seems not available in PyOpenGL' % f.cname)
+ lines.append(' ]')
+
+ lines.append('')
+
+ # Write the file
+ fname = '_desktop_ext.py' if extension else '_desktop.py'
+ with open(os.path.join(GLDIR, fname), 'w') as f:
+ f.write('\n'.join(lines))
+ print('wrote %s' % fname)
+
+
+if __name__ == '__main__':
+ # Create code for normal ES 2.0
+ parser = Parser(os.path.join(THISDIR, 'headers', 'gl2.h'))
+ create_constants_module(parser)
+ create_desktop_module(parser)
+
+ # Create code for extensions
+ parser = Parser(os.path.join(THISDIR, 'headers', 'gl2ext.h'))
+ create_constants_module(parser, True)
+ create_desktop_module(parser, True)
diff --git a/codegen/headerparser.py b/codegen/headerparser.py
new file mode 100644
index 0000000..9ec52c0
--- /dev/null
+++ b/codegen/headerparser.py
@@ -0,0 +1,338 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Code to parse a header file.
+"""
+
+import os
+import sys
+
+
+TYPEMAP = {
+ 'GLenum': 'int (GLenum)',
+ }
+
+
+def getwords(line):
+ """ Get words on a line.
+ """
+ line = line.replace('\t', ' ').strip()
+ return [w for w in line.split(' ') if w]
+
+
+# Keep track of all constants in case they are "reused" in a header file
+CONSTANTS = {}
+
+
+class Parser:
+ """ Class to parse header files.
+ """
+
+ def __init__(self, header_file, parse_now=True):
+ # Get filenames for C and Py
+ self._c_fname = c_fname =os.path.split(header_file)[1]
+
+ # Get absolute filenames
+ self._c_filename = header_file#os.path.join(SCRIPT_DIR, c_fname)
+
+ # Init output
+ self.definitions = []
+ self.functionDefs = []
+ self.constantDefs = []
+
+ # We are aware of the line number
+ self._linenr = 0
+
+ # Some stats
+ self.stat_types = set()
+
+ if parse_now:
+ self.parse()
+
+
+ def __iadd__(self, definition):
+ """ Add an output line. Can be multiple lines.
+ """
+ # Create comment
+ definition.comment = 'line %i of %s' % (self._linenr, self._c_fname)
+ # Add to lists
+ self.definitions.append(definition)
+ if isinstance(definition, FunctionDefinition):
+ self.functionDefs.append(definition)
+ elif isinstance(definition, ConstantDefinition):
+ self.constantDefs.append(definition)
+
+ return self
+
+
+ def _get_line(self):
+ # Get a stripped line, and keep track of line nr, skip empty lines
+ line = ''
+ while not line:
+ line = self._file.readline()
+ if not line:
+ raise StopIteration()
+ line = line.strip()
+ self._linenr += 1
+ return line
+
+
+ def _get_lines(self):
+ # Easy iterator
+ while True:
+ yield self._get_line()
+
+
+ def parse(self):
+ """ Parse the header file!
+ """
+
+ # Open file
+ self._file = open(self._c_filename, 'rt', encoding='utf-8')
+
+ # Parse the file
+ for line in self._get_lines():
+ if line.startswith('#define'):
+ self += ConstantDefinition(line)
+ elif ( line.startswith('GLAPI') or
+ line.startswith('GL_APICALL') or
+ line.startswith('WINGDIAPI') ):
+ while ')' not in line:
+ line += self._get_line()
+ #self += self.handle_function(line)
+ self += FunctionDefinition(line)
+
+ # Remove invalid defs
+ self.definitions = [d for d in self.definitions if d.isvalid]
+ self.functionDefs = [d for d in self.functionDefs if d.isvalid]
+ self.constantDefs = [d for d in self.constantDefs if d.isvalid]
+
+ # Resolve multipe functions that are really the same
+ self.functionDefs.sort(key=lambda x:x.cname)
+ keyDef = None
+ for funcDef in self.functionDefs:
+ if keyDef is not None:
+ extrachars = funcDef.matchKeyName(keyDef.keyname)
+ if extrachars:
+ funcDef.group = True
+ if not keyDef.group:
+ keyDef.group = [keyDef]
+ keyDef.group.append(funcDef)
+ continue
+ if funcDef.extrachars:
+ # This may be a key def
+ keyDef = funcDef
+ else:
+ keyDef = None
+
+ # Process all definitions
+ for definition in self.definitions:
+ if definition.isvalid:
+ definition.process()
+
+ # Get some stats
+ for funcDef in self.functionDefs:
+ for arg in funcDef.args:
+ self.stat_types.add(arg.ctype)
+
+ # Show stats
+ n1 = len([d for d in self.constantDefs])
+ n2 = len([d for d in self.functionDefs if d.group is not True])
+ n3 = len([d for d in self.functionDefs if isinstance(d.group, list)])
+ n4 = len([d for d in self.functionDefs if d.group is True])
+ print('Found %i constants and %i unique functions (%i groups contain %i functions)").' % (
+ n1, n2, n3, n4))
+
+ print('C-types found in args:', self.stat_types)
+
+
+ @property
+ def constant_names(self):
+ return set([d.cname for d in self.constantDefs])
+
+ @property
+ def function_names(self):
+ return set([d.cname for d in self.functionDefs])
+
+ def show_groups(self):
+ for d in self.functionDefs:
+ if isinstance(d.group, list):
+ print(d.keyname)
+ for d2 in d.group:
+ print(' ', d2.cname)
+
+
+
+class Definition:
+ """ Abstract class to represent a constant or function definition.
+ """
+ def __init__(self, line):
+ self.line = line
+ self.isvalid = True
+ self.comment = ''
+ self.cname = ''
+ self.parse_line(line)
+
+ def parse_line(self, line):
+ # Do initial parsing of the incoming line
+ # (which may be multiline actually)
+ pass
+
+ def process(self):
+ # Do more parsing of this definition
+ pass
+
+
+
+class ConstantDefinition(Definition):
+
+ def parse_line(self, line):
+ """ Set cname and value attributes.
+ """
+ self.value = None
+ line = line.split('/*',1)[0]
+ _, *args = getwords(line)
+ self.isvalid = False
+ if len(args) == 1:
+ pass
+ elif len(args) == 2:
+ # Set name
+ self.cname, val = args
+ self.isvalid = bool(self.cname)
+ # Set value
+ if val.startswith('0x'):
+ self.value = int(val[2:].rstrip('ul'), 16)
+ elif val[0] in '0123456789':
+ self.value = int(val)
+ elif val.startswith("'"):
+ self.value = val
+ elif val in CONSTANTS:
+ self.value = CONSTANTS[val]
+ else:
+ print('Warning: Dont know what to do with "%s"' % line)
+ else:
+ print('Dont know what to do with "%s"' % line)
+
+ if self.value is not None:
+ CONSTANTS[self.cname] = self.value
+
+ def process(self):
+ pass # We did all that we needed to do
+
+
+
+class FunctionDefinition(Definition):
+
+ def parse_line(self, line):
+ """ Set cname, keyname, cargs attributes.
+ """
+ # Parse components
+ beforeBrace, args = line.split('(', 1)
+ betweenBraces, _ = args.split(')', 1)
+ *prefix, name = getwords(beforeBrace)
+
+ # Store name
+ self.cname = name
+
+ # Possibly, this function belongs to a collection of similar functions,
+ # which we are going to replace with one function in Python.
+ self.keyname = self.cname.rstrip('v').rstrip('bsifd').rstrip('1234')
+ self.extrachars = self.matchKeyName(self.keyname)
+
+ # If this is a list, this instance represents the group
+ # If this is True, this instance is in a group (but not the representative)
+ self.group = None
+
+ # Create list of Argument instances
+ self.cargs = [arg.strip() for arg in betweenBraces.split(',')]
+ self.args = []
+ # Set output arg
+ self.args.append( Argument(' '.join(prefix), False) )
+ # Parse input arguments,
+ for arg in self.cargs:
+ if arg and arg != 'void':
+ self.args.append( Argument(arg) )
+
+
+ def matchKeyName(self, keyname):
+ if self.cname.startswith(keyname):
+ extrachars = self.cname[len(keyname):]
+ if all([(c in 'vbsuifd1234') for c in extrachars]):
+ return extrachars
+
+
+ def count_input_args(self):
+ return len([arg for arg in self.args if arg.pyinput])
+
+ def count_output_args(self):
+ return len([arg for arg in self.args if (not arg.pyinput)])
+
+
+ def process(self):
+
+ # Is one of the inputs really an output?
+ if self.cname.lower().startswith('glget'):
+ if not self.count_output_args():
+ args = [arg for arg in args if arg.isptr]
+ if len(args) == 1:
+ args[0].pyinput = False
+ else:
+ print('Warning: cannot determine py-output for %s' % self.name)
+
+ # Build Python function signature
+ pyargs = ', '.join([arg.name for arg in self.args if arg.pyinput])
+ #defline = 'def %s(%s):' % (self.pyname, pyargs)
+ # ... not here
+
+
+
+class Argument:
+ """ Input or output argument.
+ """
+ def __init__(self, argAsString, cinput=True):
+ # Parse string
+ components = [c for c in argAsString.split(' ') if c]
+ if len(components) == 1:
+ name = components[0]
+ type = 'unknown'
+ else:
+ name = components[-1]
+ type = components[-2]
+ # Store stuff
+ self.orig = tuple(components)
+ self.name = name.lstrip('*')
+ self.isptr = len(name) - len(self.name) # Number of stars
+ self.ctype = type
+ self.typedes = TYPEMAP.get(type, type)
+ self.pytype = self.typedes.split(' ')[0]
+ # Status flags
+ self.cinput = cinput
+ self.pyinput = cinput # May be modified
+
+
+
+if __name__ == '__main__':
+ THISDIR = os.path.abspath(os.path.dirname(__file__))
+
+ # Some tests ...
+ gl2 = Parser(os.path.join(THISDIR, 'headers', 'gl2.h'))
+ import OpenGL.GL
+ pygl = set(dir(OpenGL.GL))
+
+ # Test if all functions are in pyopengl
+ print('Not in pyopengl:', gl2.function_names.difference(pygl))
+
+ # Test if constant match with these in pyopengl
+ for d in gl2.constantDefs:
+ v1 = d.value
+ try:
+ v2 = getattr(OpenGL.GL, d.cname)
+ except AttributeError:
+ print(d.cname, 'is not in pyopengl')
+ else:
+ if v1 != v2:
+ print(d.cname, 'does not match: %r vs %r' % (v1, int(v2)))
+
+
+
\ No newline at end of file
diff --git a/codegen/headers/gl2.h b/codegen/headers/gl2.h
new file mode 100644
index 0000000..46bc0a7
--- /dev/null
+++ b/codegen/headers/gl2.h
@@ -0,0 +1,620 @@
+#ifndef __gl2_h_
+#define __gl2_h_
+
+/* $Revision: 20555 $ on $Date:: 2013-02-12 14:32:47 -0800 #$ */
+
+#include <GLES2/gl2platform.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * This document is licensed under the SGI Free Software B License Version
+ * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
+ */
+
+/*-------------------------------------------------------------------------
+ * Data type definitions
+ *-----------------------------------------------------------------------*/
+
+typedef void GLvoid;
+typedef char GLchar;
+typedef unsigned int GLenum;
+typedef unsigned char GLboolean;
+typedef unsigned int GLbitfield;
+typedef khronos_int8_t GLbyte;
+typedef short GLshort;
+typedef int GLint;
+typedef int GLsizei;
+typedef khronos_uint8_t GLubyte;
+typedef unsigned short GLushort;
+typedef unsigned int GLuint;
+typedef khronos_float_t GLfloat;
+typedef khronos_float_t GLclampf;
+typedef khronos_int32_t GLfixed;
+
+/* GL types for handling large vertex buffer objects */
+typedef khronos_intptr_t GLintptr;
+typedef khronos_ssize_t GLsizeiptr;
+
+/* OpenGL ES core versions */
+#define GL_ES_VERSION_2_0 1
+
+/* ClearBufferMask */
+#define GL_DEPTH_BUFFER_BIT 0x00000100
+#define GL_STENCIL_BUFFER_BIT 0x00000400
+#define GL_COLOR_BUFFER_BIT 0x00004000
+
+/* Boolean */
+#define GL_FALSE 0
+#define GL_TRUE 1
+
+/* BeginMode */
+#define GL_POINTS 0x0000
+#define GL_LINES 0x0001
+#define GL_LINE_LOOP 0x0002
+#define GL_LINE_STRIP 0x0003
+#define GL_TRIANGLES 0x0004
+#define GL_TRIANGLE_STRIP 0x0005
+#define GL_TRIANGLE_FAN 0x0006
+
+/* AlphaFunction (not supported in ES20) */
+/* GL_NEVER */
+/* GL_LESS */
+/* GL_EQUAL */
+/* GL_LEQUAL */
+/* GL_GREATER */
+/* GL_NOTEQUAL */
+/* GL_GEQUAL */
+/* GL_ALWAYS */
+
+/* BlendingFactorDest */
+#define GL_ZERO 0
+#define GL_ONE 1
+#define GL_SRC_COLOR 0x0300
+#define GL_ONE_MINUS_SRC_COLOR 0x0301
+#define GL_SRC_ALPHA 0x0302
+#define GL_ONE_MINUS_SRC_ALPHA 0x0303
+#define GL_DST_ALPHA 0x0304
+#define GL_ONE_MINUS_DST_ALPHA 0x0305
+
+/* BlendingFactorSrc */
+/* GL_ZERO */
+/* GL_ONE */
+#define GL_DST_COLOR 0x0306
+#define GL_ONE_MINUS_DST_COLOR 0x0307
+#define GL_SRC_ALPHA_SATURATE 0x0308
+/* GL_SRC_ALPHA */
+/* GL_ONE_MINUS_SRC_ALPHA */
+/* GL_DST_ALPHA */
+/* GL_ONE_MINUS_DST_ALPHA */
+
+/* BlendEquationSeparate */
+#define GL_FUNC_ADD 0x8006
+#define GL_BLEND_EQUATION 0x8009
+#define GL_BLEND_EQUATION_RGB 0x8009 /* same as BLEND_EQUATION */
+#define GL_BLEND_EQUATION_ALPHA 0x883D
+
+/* BlendSubtract */
+#define GL_FUNC_SUBTRACT 0x800A
+#define GL_FUNC_REVERSE_SUBTRACT 0x800B
+
+/* Separate Blend Functions */
+#define GL_BLEND_DST_RGB 0x80C8
+#define GL_BLEND_SRC_RGB 0x80C9
+#define GL_BLEND_DST_ALPHA 0x80CA
+#define GL_BLEND_SRC_ALPHA 0x80CB
+#define GL_CONSTANT_COLOR 0x8001
+#define GL_ONE_MINUS_CONSTANT_COLOR 0x8002
+#define GL_CONSTANT_ALPHA 0x8003
+#define GL_ONE_MINUS_CONSTANT_ALPHA 0x8004
+#define GL_BLEND_COLOR 0x8005
+
+/* Buffer Objects */
+#define GL_ARRAY_BUFFER 0x8892
+#define GL_ELEMENT_ARRAY_BUFFER 0x8893
+#define GL_ARRAY_BUFFER_BINDING 0x8894
+#define GL_ELEMENT_ARRAY_BUFFER_BINDING 0x8895
+
+#define GL_STREAM_DRAW 0x88E0
+#define GL_STATIC_DRAW 0x88E4
+#define GL_DYNAMIC_DRAW 0x88E8
+
+#define GL_BUFFER_SIZE 0x8764
+#define GL_BUFFER_USAGE 0x8765
+
+#define GL_CURRENT_VERTEX_ATTRIB 0x8626
+
+/* CullFaceMode */
+#define GL_FRONT 0x0404
+#define GL_BACK 0x0405
+#define GL_FRONT_AND_BACK 0x0408
+
+/* DepthFunction */
+/* GL_NEVER */
+/* GL_LESS */
+/* GL_EQUAL */
+/* GL_LEQUAL */
+/* GL_GREATER */
+/* GL_NOTEQUAL */
+/* GL_GEQUAL */
+/* GL_ALWAYS */
+
+/* EnableCap */
+#define GL_TEXTURE_2D 0x0DE1
+#define GL_CULL_FACE 0x0B44
+#define GL_BLEND 0x0BE2
+#define GL_DITHER 0x0BD0
+#define GL_STENCIL_TEST 0x0B90
+#define GL_DEPTH_TEST 0x0B71
+#define GL_SCISSOR_TEST 0x0C11
+#define GL_POLYGON_OFFSET_FILL 0x8037
+#define GL_SAMPLE_ALPHA_TO_COVERAGE 0x809E
+#define GL_SAMPLE_COVERAGE 0x80A0
+
+/* ErrorCode */
+#define GL_NO_ERROR 0
+#define GL_INVALID_ENUM 0x0500
+#define GL_INVALID_VALUE 0x0501
+#define GL_INVALID_OPERATION 0x0502
+#define GL_OUT_OF_MEMORY 0x0505
+
+/* FrontFaceDirection */
+#define GL_CW 0x0900
+#define GL_CCW 0x0901
+
+/* GetPName */
+#define GL_LINE_WIDTH 0x0B21
+#define GL_ALIASED_POINT_SIZE_RANGE 0x846D
+#define GL_ALIASED_LINE_WIDTH_RANGE 0x846E
+#define GL_CULL_FACE_MODE 0x0B45
+#define GL_FRONT_FACE 0x0B46
+#define GL_DEPTH_RANGE 0x0B70
+#define GL_DEPTH_WRITEMASK 0x0B72
+#define GL_DEPTH_CLEAR_VALUE 0x0B73
+#define GL_DEPTH_FUNC 0x0B74
+#define GL_STENCIL_CLEAR_VALUE 0x0B91
+#define GL_STENCIL_FUNC 0x0B92
+#define GL_STENCIL_FAIL 0x0B94
+#define GL_STENCIL_PASS_DEPTH_FAIL 0x0B95
+#define GL_STENCIL_PASS_DEPTH_PASS 0x0B96
+#define GL_STENCIL_REF 0x0B97
+#define GL_STENCIL_VALUE_MASK 0x0B93
+#define GL_STENCIL_WRITEMASK 0x0B98
+#define GL_STENCIL_BACK_FUNC 0x8800
+#define GL_STENCIL_BACK_FAIL 0x8801
+#define GL_STENCIL_BACK_PASS_DEPTH_FAIL 0x8802
+#define GL_STENCIL_BACK_PASS_DEPTH_PASS 0x8803
+#define GL_STENCIL_BACK_REF 0x8CA3
+#define GL_STENCIL_BACK_VALUE_MASK 0x8CA4
+#define GL_STENCIL_BACK_WRITEMASK 0x8CA5
+#define GL_VIEWPORT 0x0BA2
+#define GL_SCISSOR_BOX 0x0C10
+/* GL_SCISSOR_TEST */
+#define GL_COLOR_CLEAR_VALUE 0x0C22
+#define GL_COLOR_WRITEMASK 0x0C23
+#define GL_UNPACK_ALIGNMENT 0x0CF5
+#define GL_PACK_ALIGNMENT 0x0D05
+#define GL_MAX_TEXTURE_SIZE 0x0D33
+#define GL_MAX_VIEWPORT_DIMS 0x0D3A
+#define GL_SUBPIXEL_BITS 0x0D50
+#define GL_RED_BITS 0x0D52
+#define GL_GREEN_BITS 0x0D53
+#define GL_BLUE_BITS 0x0D54
+#define GL_ALPHA_BITS 0x0D55
+#define GL_DEPTH_BITS 0x0D56
+#define GL_STENCIL_BITS 0x0D57
+#define GL_POLYGON_OFFSET_UNITS 0x2A00
+/* GL_POLYGON_OFFSET_FILL */
+#define GL_POLYGON_OFFSET_FACTOR 0x8038
+#define GL_TEXTURE_BINDING_2D 0x8069
+#define GL_SAMPLE_BUFFERS 0x80A8
+#define GL_SAMPLES 0x80A9
+#define GL_SAMPLE_COVERAGE_VALUE 0x80AA
+#define GL_SAMPLE_COVERAGE_INVERT 0x80AB
+
+/* GetTextureParameter */
+/* GL_TEXTURE_MAG_FILTER */
+/* GL_TEXTURE_MIN_FILTER */
+/* GL_TEXTURE_WRAP_S */
+/* GL_TEXTURE_WRAP_T */
+
+#define GL_NUM_COMPRESSED_TEXTURE_FORMATS 0x86A2
+#define GL_COMPRESSED_TEXTURE_FORMATS 0x86A3
+
+/* HintMode */
+#define GL_DONT_CARE 0x1100
+#define GL_FASTEST 0x1101
+#define GL_NICEST 0x1102
+
+/* HintTarget */
+#define GL_GENERATE_MIPMAP_HINT 0x8192
+
+/* DataType */
+#define GL_BYTE 0x1400
+#define GL_UNSIGNED_BYTE 0x1401
+#define GL_SHORT 0x1402
+#define GL_UNSIGNED_SHORT 0x1403
+#define GL_INT 0x1404
+#define GL_UNSIGNED_INT 0x1405
+#define GL_FLOAT 0x1406
+#define GL_FIXED 0x140C
+
+/* PixelFormat */
+#define GL_DEPTH_COMPONENT 0x1902
+#define GL_ALPHA 0x1906
+#define GL_RGB 0x1907
+#define GL_RGBA 0x1908
+#define GL_LUMINANCE 0x1909
+#define GL_LUMINANCE_ALPHA 0x190A
+
+/* PixelType */
+/* GL_UNSIGNED_BYTE */
+#define GL_UNSIGNED_SHORT_4_4_4_4 0x8033
+#define GL_UNSIGNED_SHORT_5_5_5_1 0x8034
+#define GL_UNSIGNED_SHORT_5_6_5 0x8363
+
+/* Shaders */
+#define GL_FRAGMENT_SHADER 0x8B30
+#define GL_VERTEX_SHADER 0x8B31
+#define GL_MAX_VERTEX_ATTRIBS 0x8869
+#define GL_MAX_VERTEX_UNIFORM_VECTORS 0x8DFB
+#define GL_MAX_VARYING_VECTORS 0x8DFC
+#define GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS 0x8B4D
+#define GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS 0x8B4C
+#define GL_MAX_TEXTURE_IMAGE_UNITS 0x8872
+#define GL_MAX_FRAGMENT_UNIFORM_VECTORS 0x8DFD
+#define GL_SHADER_TYPE 0x8B4F
+#define GL_DELETE_STATUS 0x8B80
+#define GL_LINK_STATUS 0x8B82
+#define GL_VALIDATE_STATUS 0x8B83
+#define GL_ATTACHED_SHADERS 0x8B85
+#define GL_ACTIVE_UNIFORMS 0x8B86
+#define GL_ACTIVE_UNIFORM_MAX_LENGTH 0x8B87
+#define GL_ACTIVE_ATTRIBUTES 0x8B89
+#define GL_ACTIVE_ATTRIBUTE_MAX_LENGTH 0x8B8A
+#define GL_SHADING_LANGUAGE_VERSION 0x8B8C
+#define GL_CURRENT_PROGRAM 0x8B8D
+
+/* StencilFunction */
+#define GL_NEVER 0x0200
+#define GL_LESS 0x0201
+#define GL_EQUAL 0x0202
+#define GL_LEQUAL 0x0203
+#define GL_GREATER 0x0204
+#define GL_NOTEQUAL 0x0205
+#define GL_GEQUAL 0x0206
+#define GL_ALWAYS 0x0207
+
+/* StencilOp */
+/* GL_ZERO */
+#define GL_KEEP 0x1E00
+#define GL_REPLACE 0x1E01
+#define GL_INCR 0x1E02
+#define GL_DECR 0x1E03
+#define GL_INVERT 0x150A
+#define GL_INCR_WRAP 0x8507
+#define GL_DECR_WRAP 0x8508
+
+/* StringName */
+#define GL_VENDOR 0x1F00
+#define GL_RENDERER 0x1F01
+#define GL_VERSION 0x1F02
+#define GL_EXTENSIONS 0x1F03
+
+/* TextureMagFilter */
+#define GL_NEAREST 0x2600
+#define GL_LINEAR 0x2601
+
+/* TextureMinFilter */
+/* GL_NEAREST */
+/* GL_LINEAR */
+#define GL_NEAREST_MIPMAP_NEAREST 0x2700
+#define GL_LINEAR_MIPMAP_NEAREST 0x2701
+#define GL_NEAREST_MIPMAP_LINEAR 0x2702
+#define GL_LINEAR_MIPMAP_LINEAR 0x2703
+
+/* TextureParameterName */
+#define GL_TEXTURE_MAG_FILTER 0x2800
+#define GL_TEXTURE_MIN_FILTER 0x2801
+#define GL_TEXTURE_WRAP_S 0x2802
+#define GL_TEXTURE_WRAP_T 0x2803
+
+/* TextureTarget */
+/* GL_TEXTURE_2D */
+#define GL_TEXTURE 0x1702
+
+#define GL_TEXTURE_CUBE_MAP 0x8513
+#define GL_TEXTURE_BINDING_CUBE_MAP 0x8514
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_X 0x8515
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_X 0x8516
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Y 0x8517
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Y 0x8518
+#define GL_TEXTURE_CUBE_MAP_POSITIVE_Z 0x8519
+#define GL_TEXTURE_CUBE_MAP_NEGATIVE_Z 0x851A
+#define GL_MAX_CUBE_MAP_TEXTURE_SIZE 0x851C
+
+/* TextureUnit */
+#define GL_TEXTURE0 0x84C0
+#define GL_TEXTURE1 0x84C1
+#define GL_TEXTURE2 0x84C2
+#define GL_TEXTURE3 0x84C3
+#define GL_TEXTURE4 0x84C4
+#define GL_TEXTURE5 0x84C5
+#define GL_TEXTURE6 0x84C6
+#define GL_TEXTURE7 0x84C7
+#define GL_TEXTURE8 0x84C8
+#define GL_TEXTURE9 0x84C9
+#define GL_TEXTURE10 0x84CA
+#define GL_TEXTURE11 0x84CB
+#define GL_TEXTURE12 0x84CC
+#define GL_TEXTURE13 0x84CD
+#define GL_TEXTURE14 0x84CE
+#define GL_TEXTURE15 0x84CF
+#define GL_TEXTURE16 0x84D0
+#define GL_TEXTURE17 0x84D1
+#define GL_TEXTURE18 0x84D2
+#define GL_TEXTURE19 0x84D3
+#define GL_TEXTURE20 0x84D4
+#define GL_TEXTURE21 0x84D5
+#define GL_TEXTURE22 0x84D6
+#define GL_TEXTURE23 0x84D7
+#define GL_TEXTURE24 0x84D8
+#define GL_TEXTURE25 0x84D9
+#define GL_TEXTURE26 0x84DA
+#define GL_TEXTURE27 0x84DB
+#define GL_TEXTURE28 0x84DC
+#define GL_TEXTURE29 0x84DD
+#define GL_TEXTURE30 0x84DE
+#define GL_TEXTURE31 0x84DF
+#define GL_ACTIVE_TEXTURE 0x84E0
+
+/* TextureWrapMode */
+#define GL_REPEAT 0x2901
+#define GL_CLAMP_TO_EDGE 0x812F
+#define GL_MIRRORED_REPEAT 0x8370
+
+/* Uniform Types */
+#define GL_FLOAT_VEC2 0x8B50
+#define GL_FLOAT_VEC3 0x8B51
+#define GL_FLOAT_VEC4 0x8B52
+#define GL_INT_VEC2 0x8B53
+#define GL_INT_VEC3 0x8B54
+#define GL_INT_VEC4 0x8B55
+#define GL_BOOL 0x8B56
+#define GL_BOOL_VEC2 0x8B57
+#define GL_BOOL_VEC3 0x8B58
+#define GL_BOOL_VEC4 0x8B59
+#define GL_FLOAT_MAT2 0x8B5A
+#define GL_FLOAT_MAT3 0x8B5B
+#define GL_FLOAT_MAT4 0x8B5C
+#define GL_SAMPLER_2D 0x8B5E
+#define GL_SAMPLER_CUBE 0x8B60
+
+/* Vertex Arrays */
+#define GL_VERTEX_ATTRIB_ARRAY_ENABLED 0x8622
+#define GL_VERTEX_ATTRIB_ARRAY_SIZE 0x8623
+#define GL_VERTEX_ATTRIB_ARRAY_STRIDE 0x8624
+#define GL_VERTEX_ATTRIB_ARRAY_TYPE 0x8625
+#define GL_VERTEX_ATTRIB_ARRAY_NORMALIZED 0x886A
+#define GL_VERTEX_ATTRIB_ARRAY_POINTER 0x8645
+#define GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING 0x889F
+
+/* Read Format */
+#define GL_IMPLEMENTATION_COLOR_READ_TYPE 0x8B9A
+#define GL_IMPLEMENTATION_COLOR_READ_FORMAT 0x8B9B
+
+/* Shader Source */
+#define GL_COMPILE_STATUS 0x8B81
+#define GL_INFO_LOG_LENGTH 0x8B84
+#define GL_SHADER_SOURCE_LENGTH 0x8B88
+#define GL_SHADER_COMPILER 0x8DFA
+
+/* Shader Binary */
+#define GL_SHADER_BINARY_FORMATS 0x8DF8
+#define GL_NUM_SHADER_BINARY_FORMATS 0x8DF9
+
+/* Shader Precision-Specified Types */
+#define GL_LOW_FLOAT 0x8DF0
+#define GL_MEDIUM_FLOAT 0x8DF1
+#define GL_HIGH_FLOAT 0x8DF2
+#define GL_LOW_INT 0x8DF3
+#define GL_MEDIUM_INT 0x8DF4
+#define GL_HIGH_INT 0x8DF5
+
+/* Framebuffer Object. */
+#define GL_FRAMEBUFFER 0x8D40
+#define GL_RENDERBUFFER 0x8D41
+
+#define GL_RGBA4 0x8056
+#define GL_RGB5_A1 0x8057
+#define GL_RGB565 0x8D62
+#define GL_DEPTH_COMPONENT16 0x81A5
+#define GL_STENCIL_INDEX8 0x8D48
+
+#define GL_RENDERBUFFER_WIDTH 0x8D42
+#define GL_RENDERBUFFER_HEIGHT 0x8D43
+#define GL_RENDERBUFFER_INTERNAL_FORMAT 0x8D44
+#define GL_RENDERBUFFER_RED_SIZE 0x8D50
+#define GL_RENDERBUFFER_GREEN_SIZE 0x8D51
+#define GL_RENDERBUFFER_BLUE_SIZE 0x8D52
+#define GL_RENDERBUFFER_ALPHA_SIZE 0x8D53
+#define GL_RENDERBUFFER_DEPTH_SIZE 0x8D54
+#define GL_RENDERBUFFER_STENCIL_SIZE 0x8D55
+
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE 0x8CD0
+#define GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME 0x8CD1
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL 0x8CD2
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE 0x8CD3
+
+#define GL_COLOR_ATTACHMENT0 0x8CE0
+#define GL_DEPTH_ATTACHMENT 0x8D00
+#define GL_STENCIL_ATTACHMENT 0x8D20
+
+#define GL_NONE 0
+
+#define GL_FRAMEBUFFER_COMPLETE 0x8CD5
+#define GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT 0x8CD6
+#define GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT 0x8CD7
+#define GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS 0x8CD9
+#define GL_FRAMEBUFFER_UNSUPPORTED 0x8CDD
+
+#define GL_FRAMEBUFFER_BINDING 0x8CA6
+#define GL_RENDERBUFFER_BINDING 0x8CA7
+#define GL_MAX_RENDERBUFFER_SIZE 0x84E8
+
+#define GL_INVALID_FRAMEBUFFER_OPERATION 0x0506
+
+/*-------------------------------------------------------------------------
+ * GL core functions.
+ *-----------------------------------------------------------------------*/
+
+GL_APICALL void GL_APIENTRY glActiveTexture (GLenum texture);
+GL_APICALL void GL_APIENTRY glAttachShader (GLuint program, GLuint shader);
+GL_APICALL void GL_APIENTRY glBindAttribLocation (GLuint program, GLuint index, const GLchar* name);
+GL_APICALL void GL_APIENTRY glBindBuffer (GLenum target, GLuint buffer);
+GL_APICALL void GL_APIENTRY glBindFramebuffer (GLenum target, GLuint framebuffer);
+GL_APICALL void GL_APIENTRY glBindRenderbuffer (GLenum target, GLuint renderbuffer);
+GL_APICALL void GL_APIENTRY glBindTexture (GLenum target, GLuint texture);
+GL_APICALL void GL_APIENTRY glBlendColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+GL_APICALL void GL_APIENTRY glBlendEquation ( GLenum mode );
+GL_APICALL void GL_APIENTRY glBlendEquationSeparate (GLenum modeRGB, GLenum modeAlpha);
+GL_APICALL void GL_APIENTRY glBlendFunc (GLenum sfactor, GLenum dfactor);
+GL_APICALL void GL_APIENTRY glBlendFuncSeparate (GLenum srcRGB, GLenum dstRGB, GLenum srcAlpha, GLenum dstAlpha);
+GL_APICALL void GL_APIENTRY glBufferData (GLenum target, GLsizeiptr size, const GLvoid* data, GLenum usage);
+GL_APICALL void GL_APIENTRY glBufferSubData (GLenum target, GLintptr offset, GLsizeiptr size, const GLvoid* data);
+GL_APICALL GLenum GL_APIENTRY glCheckFramebufferStatus (GLenum target);
+GL_APICALL void GL_APIENTRY glClear (GLbitfield mask);
+GL_APICALL void GL_APIENTRY glClearColor (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
+GL_APICALL void GL_APIENTRY glClearDepthf (GLclampf depth);
+GL_APICALL void GL_APIENTRY glClearStencil (GLint s);
+GL_APICALL void GL_APIENTRY glColorMask (GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
+GL_APICALL void GL_APIENTRY glCompileShader (GLuint shader);
+GL_APICALL void GL_APIENTRY glCompressedTexImage2D (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid* data);
+GL_APICALL void GL_APIENTRY glCompressedTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei imageSize, const GLvoid* data);
+GL_APICALL void GL_APIENTRY glCopyTexImage2D (GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
+GL_APICALL void GL_APIENTRY glCopyTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+GL_APICALL GLuint GL_APIENTRY glCreateProgram (void);
+GL_APICALL GLuint GL_APIENTRY glCreateShader (GLenum type);
+GL_APICALL void GL_APIENTRY glCullFace (GLenum mode);
+GL_APICALL void GL_APIENTRY glDeleteBuffers (GLsizei n, const GLuint* buffers);
+GL_APICALL void GL_APIENTRY glDeleteFramebuffers (GLsizei n, const GLuint* framebuffers);
+GL_APICALL void GL_APIENTRY glDeleteProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glDeleteRenderbuffers (GLsizei n, const GLuint* renderbuffers);
+GL_APICALL void GL_APIENTRY glDeleteShader (GLuint shader);
+GL_APICALL void GL_APIENTRY glDeleteTextures (GLsizei n, const GLuint* textures);
+GL_APICALL void GL_APIENTRY glDepthFunc (GLenum func);
+GL_APICALL void GL_APIENTRY glDepthMask (GLboolean flag);
+GL_APICALL void GL_APIENTRY glDepthRangef (GLclampf zNear, GLclampf zFar);
+GL_APICALL void GL_APIENTRY glDetachShader (GLuint program, GLuint shader);
+GL_APICALL void GL_APIENTRY glDisable (GLenum cap);
+GL_APICALL void GL_APIENTRY glDisableVertexAttribArray (GLuint index);
+GL_APICALL void GL_APIENTRY glDrawArrays (GLenum mode, GLint first, GLsizei count);
+GL_APICALL void GL_APIENTRY glDrawElements (GLenum mode, GLsizei count, GLenum type, const GLvoid* indices);
+GL_APICALL void GL_APIENTRY glEnable (GLenum cap);
+GL_APICALL void GL_APIENTRY glEnableVertexAttribArray (GLuint index);
+GL_APICALL void GL_APIENTRY glFinish (void);
+GL_APICALL void GL_APIENTRY glFlush (void);
+GL_APICALL void GL_APIENTRY glFramebufferRenderbuffer (GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer);
+GL_APICALL void GL_APIENTRY glFramebufferTexture2D (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
+GL_APICALL void GL_APIENTRY glFrontFace (GLenum mode);
+GL_APICALL void GL_APIENTRY glGenBuffers (GLsizei n, GLuint* buffers);
+GL_APICALL void GL_APIENTRY glGenerateMipmap (GLenum target);
+GL_APICALL void GL_APIENTRY glGenFramebuffers (GLsizei n, GLuint* framebuffers);
+GL_APICALL void GL_APIENTRY glGenRenderbuffers (GLsizei n, GLuint* renderbuffers);
+GL_APICALL void GL_APIENTRY glGenTextures (GLsizei n, GLuint* textures);
+GL_APICALL void GL_APIENTRY glGetActiveAttrib (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, GLchar* name);
+GL_APICALL void GL_APIENTRY glGetActiveUniform (GLuint program, GLuint index, GLsizei bufsize, GLsizei* length, GLint* size, GLenum* type, GLchar* name);
+GL_APICALL void GL_APIENTRY glGetAttachedShaders (GLuint program, GLsizei maxcount, GLsizei* count, GLuint* shaders);
+GL_APICALL GLint GL_APIENTRY glGetAttribLocation (GLuint program, const GLchar* name);
+GL_APICALL void GL_APIENTRY glGetBooleanv (GLenum pname, GLboolean* params);
+GL_APICALL void GL_APIENTRY glGetBufferParameteriv (GLenum target, GLenum pname, GLint* params);
+GL_APICALL GLenum GL_APIENTRY glGetError (void);
+GL_APICALL void GL_APIENTRY glGetFloatv (GLenum pname, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetFramebufferAttachmentParameteriv (GLenum target, GLenum attachment, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetIntegerv (GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetProgramiv (GLuint program, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetProgramInfoLog (GLuint program, GLsizei bufsize, GLsizei* length, GLchar* infolog);
+GL_APICALL void GL_APIENTRY glGetRenderbufferParameteriv (GLenum target, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetShaderiv (GLuint shader, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetShaderInfoLog (GLuint shader, GLsizei bufsize, GLsizei* length, GLchar* infolog);
+GL_APICALL void GL_APIENTRY glGetShaderPrecisionFormat (GLenum shadertype, GLenum precisiontype, GLint* range, GLint* precision);
+GL_APICALL void GL_APIENTRY glGetShaderSource (GLuint shader, GLsizei bufsize, GLsizei* length, GLchar* source);
+GL_APICALL const GLubyte* GL_APIENTRY glGetString (GLenum name);
+GL_APICALL void GL_APIENTRY glGetTexParameterfv (GLenum target, GLenum pname, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetTexParameteriv (GLenum target, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetUniformfv (GLuint program, GLint location, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetUniformiv (GLuint program, GLint location, GLint* params);
+GL_APICALL GLint GL_APIENTRY glGetUniformLocation (GLuint program, const GLchar* name);
+GL_APICALL void GL_APIENTRY glGetVertexAttribfv (GLuint index, GLenum pname, GLfloat* params);
+GL_APICALL void GL_APIENTRY glGetVertexAttribiv (GLuint index, GLenum pname, GLint* params);
+GL_APICALL void GL_APIENTRY glGetVertexAttribPointerv (GLuint index, GLenum pname, GLvoid** pointer);
+GL_APICALL void GL_APIENTRY glHint (GLenum target, GLenum mode);
+GL_APICALL GLboolean GL_APIENTRY glIsBuffer (GLuint buffer);
+GL_APICALL GLboolean GL_APIENTRY glIsEnabled (GLenum cap);
+GL_APICALL GLboolean GL_APIENTRY glIsFramebuffer (GLuint framebuffer);
+GL_APICALL GLboolean GL_APIENTRY glIsProgram (GLuint program);
+GL_APICALL GLboolean GL_APIENTRY glIsRenderbuffer (GLuint renderbuffer);
+GL_APICALL GLboolean GL_APIENTRY glIsShader (GLuint shader);
+GL_APICALL GLboolean GL_APIENTRY glIsTexture (GLuint texture);
+GL_APICALL void GL_APIENTRY glLineWidth (GLfloat width);
+GL_APICALL void GL_APIENTRY glLinkProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glPixelStorei (GLenum pname, GLint param);
+GL_APICALL void GL_APIENTRY glPolygonOffset (GLfloat factor, GLfloat units);
+GL_APICALL void GL_APIENTRY glReadPixels (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid* pixels);
+GL_APICALL void GL_APIENTRY glReleaseShaderCompiler (void);
+GL_APICALL void GL_APIENTRY glRenderbufferStorage (GLenum target, GLenum internalformat, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glSampleCoverage (GLclampf value, GLboolean invert);
+GL_APICALL void GL_APIENTRY glScissor (GLint x, GLint y, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glShaderBinary (GLsizei n, const GLuint* shaders, GLenum binaryformat, const GLvoid* binary, GLsizei length);
+GL_APICALL void GL_APIENTRY glShaderSource (GLuint shader, GLsizei count, const GLchar* const* string, const GLint* length);
+GL_APICALL void GL_APIENTRY glStencilFunc (GLenum func, GLint ref, GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilFuncSeparate (GLenum face, GLenum func, GLint ref, GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilMask (GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilMaskSeparate (GLenum face, GLuint mask);
+GL_APICALL void GL_APIENTRY glStencilOp (GLenum fail, GLenum zfail, GLenum zpass);
+GL_APICALL void GL_APIENTRY glStencilOpSeparate (GLenum face, GLenum fail, GLenum zfail, GLenum zpass);
+GL_APICALL void GL_APIENTRY glTexImage2D (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels);
+GL_APICALL void GL_APIENTRY glTexParameterf (GLenum target, GLenum pname, GLfloat param);
+GL_APICALL void GL_APIENTRY glTexParameterfv (GLenum target, GLenum pname, const GLfloat* params);
+GL_APICALL void GL_APIENTRY glTexParameteri (GLenum target, GLenum pname, GLint param);
+GL_APICALL void GL_APIENTRY glTexParameteriv (GLenum target, GLenum pname, const GLint* params);
+GL_APICALL void GL_APIENTRY glTexSubImage2D (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* pixels);
+GL_APICALL void GL_APIENTRY glUniform1f (GLint location, GLfloat x);
+GL_APICALL void GL_APIENTRY glUniform1fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform1i (GLint location, GLint x);
+GL_APICALL void GL_APIENTRY glUniform1iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniform2f (GLint location, GLfloat x, GLfloat y);
+GL_APICALL void GL_APIENTRY glUniform2fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform2i (GLint location, GLint x, GLint y);
+GL_APICALL void GL_APIENTRY glUniform2iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniform3f (GLint location, GLfloat x, GLfloat y, GLfloat z);
+GL_APICALL void GL_APIENTRY glUniform3fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform3i (GLint location, GLint x, GLint y, GLint z);
+GL_APICALL void GL_APIENTRY glUniform3iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniform4f (GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+GL_APICALL void GL_APIENTRY glUniform4fv (GLint location, GLsizei count, const GLfloat* v);
+GL_APICALL void GL_APIENTRY glUniform4i (GLint location, GLint x, GLint y, GLint z, GLint w);
+GL_APICALL void GL_APIENTRY glUniform4iv (GLint location, GLsizei count, const GLint* v);
+GL_APICALL void GL_APIENTRY glUniformMatrix2fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+GL_APICALL void GL_APIENTRY glUniformMatrix3fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+GL_APICALL void GL_APIENTRY glUniformMatrix4fv (GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
+GL_APICALL void GL_APIENTRY glUseProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glValidateProgram (GLuint program);
+GL_APICALL void GL_APIENTRY glVertexAttrib1f (GLuint indx, GLfloat x);
+GL_APICALL void GL_APIENTRY glVertexAttrib1fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttrib2f (GLuint indx, GLfloat x, GLfloat y);
+GL_APICALL void GL_APIENTRY glVertexAttrib2fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttrib3f (GLuint indx, GLfloat x, GLfloat y, GLfloat z);
+GL_APICALL void GL_APIENTRY glVertexAttrib3fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttrib4f (GLuint indx, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+GL_APICALL void GL_APIENTRY glVertexAttrib4fv (GLuint indx, const GLfloat* values);
+GL_APICALL void GL_APIENTRY glVertexAttribPointer (GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const GLvoid* ptr);
+GL_APICALL void GL_APIENTRY glViewport (GLint x, GLint y, GLsizei width, GLsizei height);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __gl2_h_ */
\ No newline at end of file
diff --git a/codegen/headers/gl2ext.h b/codegen/headers/gl2ext.h
new file mode 100644
index 0000000..6aecb15
--- /dev/null
+++ b/codegen/headers/gl2ext.h
@@ -0,0 +1,2051 @@
+#ifndef __gl2ext_h_
+#define __gl2ext_h_
+
+/* $Revision: 22161 $ on $Date:: 2013-06-25 08:17:27 -0700 #$ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * This document is licensed under the SGI Free Software B License Version
+ * 2.0. For details, see http://oss.sgi.com/projects/FreeB/ .
+ */
+
+#ifndef GL_APIENTRYP
+# define GL_APIENTRYP GL_APIENTRY*
+#endif
+
+/* New types shared by several extensions */
+
+#ifndef __gl3_h_
+/* These are defined with respect to <inttypes.h> in the
+ * Apple extension spec, but they are also used by non-APPLE
+ * extensions, and in the Khronos header we use the Khronos
+ * portable types in khrplatform.h, which must be defined.
+ */
+typedef khronos_int64_t GLint64;
+typedef khronos_uint64_t GLuint64;
+typedef struct __GLsync *GLsync;
+#endif
+
+
+/*------------------------------------------------------------------------*
+ * OES extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_OES_compressed_ETC1_RGB8_texture */
+#ifndef GL_OES_compressed_ETC1_RGB8_texture
+#define GL_ETC1_RGB8_OES 0x8D64
+#endif
+
+/* GL_OES_compressed_paletted_texture */
+#ifndef GL_OES_compressed_paletted_texture
+#define GL_PALETTE4_RGB8_OES 0x8B90
+#define GL_PALETTE4_RGBA8_OES 0x8B91
+#define GL_PALETTE4_R5_G6_B5_OES 0x8B92
+#define GL_PALETTE4_RGBA4_OES 0x8B93
+#define GL_PALETTE4_RGB5_A1_OES 0x8B94
+#define GL_PALETTE8_RGB8_OES 0x8B95
+#define GL_PALETTE8_RGBA8_OES 0x8B96
+#define GL_PALETTE8_R5_G6_B5_OES 0x8B97
+#define GL_PALETTE8_RGBA4_OES 0x8B98
+#define GL_PALETTE8_RGB5_A1_OES 0x8B99
+#endif
+
+/* GL_OES_depth24 */
+#ifndef GL_OES_depth24
+#define GL_DEPTH_COMPONENT24_OES 0x81A6
+#endif
+
+/* GL_OES_depth32 */
+#ifndef GL_OES_depth32
+#define GL_DEPTH_COMPONENT32_OES 0x81A7
+#endif
+
+/* GL_OES_depth_texture */
+/* No new tokens introduced by this extension. */
+
+/* GL_OES_EGL_image */
+#ifndef GL_OES_EGL_image
+typedef void* GLeglImageOES;
+#endif
+
+/* GL_OES_EGL_image_external */
+#ifndef GL_OES_EGL_image_external
+/* GLeglImageOES defined in GL_OES_EGL_image already. */
+#define GL_TEXTURE_EXTERNAL_OES 0x8D65
+#define GL_SAMPLER_EXTERNAL_OES 0x8D66
+#define GL_TEXTURE_BINDING_EXTERNAL_OES 0x8D67
+#define GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES 0x8D68
+#endif
+
+/* GL_OES_element_index_uint */
+#ifndef GL_OES_element_index_uint
+#define GL_UNSIGNED_INT 0x1405
+#endif
+
+/* GL_OES_get_program_binary */
+#ifndef GL_OES_get_program_binary
+#define GL_PROGRAM_BINARY_LENGTH_OES 0x8741
+#define GL_NUM_PROGRAM_BINARY_FORMATS_OES 0x87FE
+#define GL_PROGRAM_BINARY_FORMATS_OES 0x87FF
+#endif
+
+/* GL_OES_mapbuffer */
+#ifndef GL_OES_mapbuffer
+#define GL_WRITE_ONLY_OES 0x88B9
+#define GL_BUFFER_ACCESS_OES 0x88BB
+#define GL_BUFFER_MAPPED_OES 0x88BC
+#define GL_BUFFER_MAP_POINTER_OES 0x88BD
+#endif
+
+/* GL_OES_packed_depth_stencil */
+#ifndef GL_OES_packed_depth_stencil
+#define GL_DEPTH_STENCIL_OES 0x84F9
+#define GL_UNSIGNED_INT_24_8_OES 0x84FA
+#define GL_DEPTH24_STENCIL8_OES 0x88F0
+#endif
+
+/* GL_OES_required_internalformat */
+#ifndef GL_OES_required_internalformat
+#define GL_ALPHA8_OES 0x803C
+#define GL_DEPTH_COMPONENT16_OES 0x81A5
+/* reuse GL_DEPTH_COMPONENT24_OES */
+/* reuse GL_DEPTH24_STENCIL8_OES */
+/* reuse GL_DEPTH_COMPONENT32_OES */
+#define GL_LUMINANCE4_ALPHA4_OES 0x8043
+#define GL_LUMINANCE8_ALPHA8_OES 0x8045
+#define GL_LUMINANCE8_OES 0x8040
+#define GL_RGBA4_OES 0x8056
+#define GL_RGB5_A1_OES 0x8057
+#define GL_RGB565_OES 0x8D62
+/* reuse GL_RGB8_OES */
+/* reuse GL_RGBA8_OES */
+/* reuse GL_RGB10_EXT */
+/* reuse GL_RGB10_A2_EXT */
+#endif
+
+/* GL_OES_rgb8_rgba8 */
+#ifndef GL_OES_rgb8_rgba8
+#define GL_RGB8_OES 0x8051
+#define GL_RGBA8_OES 0x8058
+#endif
+
+/* GL_OES_standard_derivatives */
+#ifndef GL_OES_standard_derivatives
+#define GL_FRAGMENT_SHADER_DERIVATIVE_HINT_OES 0x8B8B
+#endif
+
+/* GL_OES_stencil1 */
+#ifndef GL_OES_stencil1
+#define GL_STENCIL_INDEX1_OES 0x8D46
+#endif
+
+/* GL_OES_stencil4 */
+#ifndef GL_OES_stencil4
+#define GL_STENCIL_INDEX4_OES 0x8D47
+#endif
+
+#ifndef GL_OES_surfaceless_context
+#define GL_FRAMEBUFFER_UNDEFINED_OES 0x8219
+#endif
+
+/* GL_OES_texture_3D */
+#ifndef GL_OES_texture_3D
+#define GL_TEXTURE_WRAP_R_OES 0x8072
+#define GL_TEXTURE_3D_OES 0x806F
+#define GL_TEXTURE_BINDING_3D_OES 0x806A
+#define GL_MAX_3D_TEXTURE_SIZE_OES 0x8073
+#define GL_SAMPLER_3D_OES 0x8B5F
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET_OES 0x8CD4
+#endif
+
+/* GL_OES_texture_float */
+/* No new tokens introduced by this extension. */
+
+/* GL_OES_texture_float_linear */
+/* No new tokens introduced by this extension. */
+
+/* GL_OES_texture_half_float */
+#ifndef GL_OES_texture_half_float
+#define GL_HALF_FLOAT_OES 0x8D61
+#endif
+
+/* GL_OES_texture_half_float_linear */
+/* No new tokens introduced by this extension. */
+
+/* GL_OES_texture_npot */
+/* No new tokens introduced by this extension. */
+
+/* GL_OES_vertex_array_object */
+#ifndef GL_OES_vertex_array_object
+#define GL_VERTEX_ARRAY_BINDING_OES 0x85B5
+#endif
+
+/* GL_OES_vertex_half_float */
+/* GL_HALF_FLOAT_OES defined in GL_OES_texture_half_float already. */
+
+/* GL_OES_vertex_type_10_10_10_2 */
+#ifndef GL_OES_vertex_type_10_10_10_2
+#define GL_UNSIGNED_INT_10_10_10_2_OES 0x8DF6
+#define GL_INT_10_10_10_2_OES 0x8DF7
+#endif
+
+/*------------------------------------------------------------------------*
+ * KHR extension tokens
+ *------------------------------------------------------------------------*/
+
+#ifndef GL_KHR_debug
+typedef void (GL_APIENTRYP GLDEBUGPROCKHR)(GLenum source,GLenum type,GLuint id,GLenum severity,GLsizei length,const GLchar *message,const GLvoid *userParam);
+#define GL_DEBUG_OUTPUT_SYNCHRONOUS_KHR 0x8242
+#define GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH_KHR 0x8243
+#define GL_DEBUG_CALLBACK_FUNCTION_KHR 0x8244
+#define GL_DEBUG_CALLBACK_USER_PARAM_KHR 0x8245
+#define GL_DEBUG_SOURCE_API_KHR 0x8246
+#define GL_DEBUG_SOURCE_WINDOW_SYSTEM_KHR 0x8247
+#define GL_DEBUG_SOURCE_SHADER_COMPILER_KHR 0x8248
+#define GL_DEBUG_SOURCE_THIRD_PARTY_KHR 0x8249
+#define GL_DEBUG_SOURCE_APPLICATION_KHR 0x824A
+#define GL_DEBUG_SOURCE_OTHER_KHR 0x824B
+#define GL_DEBUG_TYPE_ERROR_KHR 0x824C
+#define GL_DEBUG_TYPE_DEPRECATED_BEHAVIOR_KHR 0x824D
+#define GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_KHR 0x824E
+#define GL_DEBUG_TYPE_PORTABILITY_KHR 0x824F
+#define GL_DEBUG_TYPE_PERFORMANCE_KHR 0x8250
+#define GL_DEBUG_TYPE_OTHER_KHR 0x8251
+#define GL_DEBUG_TYPE_MARKER_KHR 0x8268
+#define GL_DEBUG_TYPE_PUSH_GROUP_KHR 0x8269
+#define GL_DEBUG_TYPE_POP_GROUP_KHR 0x826A
+#define GL_DEBUG_SEVERITY_NOTIFICATION_KHR 0x826B
+#define GL_MAX_DEBUG_GROUP_STACK_DEPTH_KHR 0x826C
+#define GL_DEBUG_GROUP_STACK_DEPTH_KHR 0x826D
+#define GL_BUFFER_KHR 0x82E0
+#define GL_SHADER_KHR 0x82E1
+#define GL_PROGRAM_KHR 0x82E2
+#define GL_QUERY_KHR 0x82E3
+/* PROGRAM_PIPELINE only in GL */
+#define GL_SAMPLER_KHR 0x82E6
+/* DISPLAY_LIST only in GL */
+#define GL_MAX_LABEL_LENGTH_KHR 0x82E8
+#define GL_MAX_DEBUG_MESSAGE_LENGTH_KHR 0x9143
+#define GL_MAX_DEBUG_LOGGED_MESSAGES_KHR 0x9144
+#define GL_DEBUG_LOGGED_MESSAGES_KHR 0x9145
+#define GL_DEBUG_SEVERITY_HIGH_KHR 0x9146
+#define GL_DEBUG_SEVERITY_MEDIUM_KHR 0x9147
+#define GL_DEBUG_SEVERITY_LOW_KHR 0x9148
+#define GL_DEBUG_OUTPUT_KHR 0x92E0
+#define GL_CONTEXT_FLAG_DEBUG_BIT_KHR 0x00000002
+#define GL_STACK_OVERFLOW_KHR 0x0503
+#define GL_STACK_UNDERFLOW_KHR 0x0504
+#endif
+
+#ifndef GL_KHR_texture_compression_astc_ldr
+#define GL_COMPRESSED_RGBA_ASTC_4x4_KHR 0x93B0
+#define GL_COMPRESSED_RGBA_ASTC_5x4_KHR 0x93B1
+#define GL_COMPRESSED_RGBA_ASTC_5x5_KHR 0x93B2
+#define GL_COMPRESSED_RGBA_ASTC_6x5_KHR 0x93B3
+#define GL_COMPRESSED_RGBA_ASTC_6x6_KHR 0x93B4
+#define GL_COMPRESSED_RGBA_ASTC_8x5_KHR 0x93B5
+#define GL_COMPRESSED_RGBA_ASTC_8x6_KHR 0x93B6
+#define GL_COMPRESSED_RGBA_ASTC_8x8_KHR 0x93B7
+#define GL_COMPRESSED_RGBA_ASTC_10x5_KHR 0x93B8
+#define GL_COMPRESSED_RGBA_ASTC_10x6_KHR 0x93B9
+#define GL_COMPRESSED_RGBA_ASTC_10x8_KHR 0x93BA
+#define GL_COMPRESSED_RGBA_ASTC_10x10_KHR 0x93BB
+#define GL_COMPRESSED_RGBA_ASTC_12x10_KHR 0x93BC
+#define GL_COMPRESSED_RGBA_ASTC_12x12_KHR 0x93BD
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR 0x93D0
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR 0x93D1
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR 0x93D2
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR 0x93D3
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR 0x93D4
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR 0x93D5
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR 0x93D6
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR 0x93D7
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR 0x93D8
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR 0x93D9
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR 0x93DA
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR 0x93DB
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR 0x93DC
+#define GL_COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR 0x93DD
+#endif
+
+/*------------------------------------------------------------------------*
+ * AMD extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_AMD_compressed_3DC_texture */
+#ifndef GL_AMD_compressed_3DC_texture
+#define GL_3DC_X_AMD 0x87F9
+#define GL_3DC_XY_AMD 0x87FA
+#endif
+
+/* GL_AMD_compressed_ATC_texture */
+#ifndef GL_AMD_compressed_ATC_texture
+#define GL_ATC_RGB_AMD 0x8C92
+#define GL_ATC_RGBA_EXPLICIT_ALPHA_AMD 0x8C93
+#define GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD 0x87EE
+#endif
+
+/* GL_AMD_performance_monitor */
+#ifndef GL_AMD_performance_monitor
+#define GL_COUNTER_TYPE_AMD 0x8BC0
+#define GL_COUNTER_RANGE_AMD 0x8BC1
+#define GL_UNSIGNED_INT64_AMD 0x8BC2
+#define GL_PERCENTAGE_AMD 0x8BC3
+#define GL_PERFMON_RESULT_AVAILABLE_AMD 0x8BC4
+#define GL_PERFMON_RESULT_SIZE_AMD 0x8BC5
+#define GL_PERFMON_RESULT_AMD 0x8BC6
+#endif
+
+/* GL_AMD_program_binary_Z400 */
+#ifndef GL_AMD_program_binary_Z400
+#define GL_Z400_BINARY_AMD 0x8740
+#endif
+
+/*------------------------------------------------------------------------*
+ * ANGLE extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_ANGLE_depth_texture */
+#ifndef GL_ANGLE_depth_texture
+#define GL_DEPTH_COMPONENT 0x1902
+#define GL_DEPTH_STENCIL_OES 0x84F9
+#define GL_UNSIGNED_SHORT 0x1403
+#define GL_UNSIGNED_INT 0x1405
+#define GL_UNSIGNED_INT_24_8_OES 0x84FA
+#define GL_DEPTH_COMPONENT16 0x81A5
+#define GL_DEPTH_COMPONENT32_OES 0x81A7
+#define GL_DEPTH24_STENCIL8_OES 0x88F0
+#endif
+
+/* GL_ANGLE_framebuffer_blit */
+#ifndef GL_ANGLE_framebuffer_blit
+#define GL_READ_FRAMEBUFFER_ANGLE 0x8CA8
+#define GL_DRAW_FRAMEBUFFER_ANGLE 0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING_ANGLE 0x8CA6
+#define GL_READ_FRAMEBUFFER_BINDING_ANGLE 0x8CAA
+#endif
+
+/* GL_ANGLE_framebuffer_multisample */
+#ifndef GL_ANGLE_framebuffer_multisample
+#define GL_RENDERBUFFER_SAMPLES_ANGLE 0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_ANGLE 0x8D56
+#define GL_MAX_SAMPLES_ANGLE 0x8D57
+#endif
+
+/* GL_ANGLE_instanced_arrays */
+#ifndef GL_ANGLE_instanced_arrays
+#define GL_VERTEX_ATTRIB_ARRAY_DIVISOR_ANGLE 0x88FE
+#endif
+
+/* GL_ANGLE_pack_reverse_row_order */
+#ifndef GL_ANGLE_pack_reverse_row_order
+#define GL_PACK_REVERSE_ROW_ORDER_ANGLE 0x93A4
+#endif
+
+/* GL_ANGLE_program_binary */
+#ifndef GL_ANGLE_program_binary
+#define GL_PROGRAM_BINARY_ANGLE 0x93A6
+#endif
+
+/* GL_ANGLE_texture_compression_dxt3 */
+#ifndef GL_ANGLE_texture_compression_dxt3
+#define GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE 0x83F2
+#endif
+
+/* GL_ANGLE_texture_compression_dxt5 */
+#ifndef GL_ANGLE_texture_compression_dxt5
+#define GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE 0x83F3
+#endif
+
+/* GL_ANGLE_texture_usage */
+#ifndef GL_ANGLE_texture_usage
+#define GL_TEXTURE_USAGE_ANGLE 0x93A2
+#define GL_FRAMEBUFFER_ATTACHMENT_ANGLE 0x93A3
+#endif
+
+/* GL_ANGLE_translated_shader_source */
+#ifndef GL_ANGLE_translated_shader_source
+#define GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE 0x93A0
+#endif
+
+/*------------------------------------------------------------------------*
+ * APPLE extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_APPLE_copy_texture_levels */
+/* No new tokens introduced by this extension. */
+
+/* GL_APPLE_framebuffer_multisample */
+#ifndef GL_APPLE_framebuffer_multisample
+#define GL_RENDERBUFFER_SAMPLES_APPLE 0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_APPLE 0x8D56
+#define GL_MAX_SAMPLES_APPLE 0x8D57
+#define GL_READ_FRAMEBUFFER_APPLE 0x8CA8
+#define GL_DRAW_FRAMEBUFFER_APPLE 0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING_APPLE 0x8CA6
+#define GL_READ_FRAMEBUFFER_BINDING_APPLE 0x8CAA
+#endif
+
+/* GL_APPLE_rgb_422 */
+#ifndef GL_APPLE_rgb_422
+#define GL_RGB_422_APPLE 0x8A1F
+#define GL_UNSIGNED_SHORT_8_8_APPLE 0x85BA
+#define GL_UNSIGNED_SHORT_8_8_REV_APPLE 0x85BB
+#endif
+
+/* GL_APPLE_sync */
+#ifndef GL_APPLE_sync
+
+#define GL_SYNC_OBJECT_APPLE 0x8A53
+#define GL_MAX_SERVER_WAIT_TIMEOUT_APPLE 0x9111
+#define GL_OBJECT_TYPE_APPLE 0x9112
+#define GL_SYNC_CONDITION_APPLE 0x9113
+#define GL_SYNC_STATUS_APPLE 0x9114
+#define GL_SYNC_FLAGS_APPLE 0x9115
+#define GL_SYNC_FENCE_APPLE 0x9116
+#define GL_SYNC_GPU_COMMANDS_COMPLETE_APPLE 0x9117
+#define GL_UNSIGNALED_APPLE 0x9118
+#define GL_SIGNALED_APPLE 0x9119
+#define GL_ALREADY_SIGNALED_APPLE 0x911A
+#define GL_TIMEOUT_EXPIRED_APPLE 0x911B
+#define GL_CONDITION_SATISFIED_APPLE 0x911C
+#define GL_WAIT_FAILED_APPLE 0x911D
+#define GL_SYNC_FLUSH_COMMANDS_BIT_APPLE 0x00000001
+#define GL_TIMEOUT_IGNORED_APPLE 0xFFFFFFFFFFFFFFFFull
+#endif
+
+/* GL_APPLE_texture_format_BGRA8888 */
+#ifndef GL_APPLE_texture_format_BGRA8888
+#define GL_BGRA_EXT 0x80E1
+#endif
+
+/* GL_APPLE_texture_max_level */
+#ifndef GL_APPLE_texture_max_level
+#define GL_TEXTURE_MAX_LEVEL_APPLE 0x813D
+#endif
+
+/*------------------------------------------------------------------------*
+ * ARM extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_ARM_mali_program_binary */
+#ifndef GL_ARM_mali_program_binary
+#define GL_MALI_PROGRAM_BINARY_ARM 0x8F61
+#endif
+
+/* GL_ARM_mali_shader_binary */
+#ifndef GL_ARM_mali_shader_binary
+#define GL_MALI_SHADER_BINARY_ARM 0x8F60
+#endif
+
+/* GL_ARM_rgba8 */
+/* No new tokens introduced by this extension. */
+
+/*------------------------------------------------------------------------*
+ * EXT extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_EXT_blend_minmax */
+#ifndef GL_EXT_blend_minmax
+#define GL_MIN_EXT 0x8007
+#define GL_MAX_EXT 0x8008
+#endif
+
+/* GL_EXT_color_buffer_half_float */
+#ifndef GL_EXT_color_buffer_half_float
+#define GL_RGBA16F_EXT 0x881A
+#define GL_RGB16F_EXT 0x881B
+#define GL_RG16F_EXT 0x822F
+#define GL_R16F_EXT 0x822D
+#define GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE_EXT 0x8211
+#define GL_UNSIGNED_NORMALIZED_EXT 0x8C17
+#endif
+
+/* GL_EXT_debug_label */
+#ifndef GL_EXT_debug_label
+#define GL_PROGRAM_PIPELINE_OBJECT_EXT 0x8A4F
+#define GL_PROGRAM_OBJECT_EXT 0x8B40
+#define GL_SHADER_OBJECT_EXT 0x8B48
+#define GL_BUFFER_OBJECT_EXT 0x9151
+#define GL_QUERY_OBJECT_EXT 0x9153
+#define GL_VERTEX_ARRAY_OBJECT_EXT 0x9154
+#endif
+
+/* GL_EXT_debug_marker */
+/* No new tokens introduced by this extension. */
+
+/* GL_EXT_discard_framebuffer */
+#ifndef GL_EXT_discard_framebuffer
+#define GL_COLOR_EXT 0x1800
+#define GL_DEPTH_EXT 0x1801
+#define GL_STENCIL_EXT 0x1802
+#endif
+
+#ifndef GL_EXT_disjoint_timer_query
+#define GL_QUERY_COUNTER_BITS_EXT 0x8864
+#define GL_CURRENT_QUERY_EXT 0x8865
+#define GL_QUERY_RESULT_EXT 0x8866
+#define GL_QUERY_RESULT_AVAILABLE_EXT 0x8867
+#define GL_TIME_ELAPSED_EXT 0x88BF
+#define GL_TIMESTAMP_EXT 0x8E28
+#define GL_GPU_DISJOINT_EXT 0x8FBB
+#endif
+
+#ifndef GL_EXT_draw_buffers
+#define GL_EXT_draw_buffers 1
+#define GL_MAX_COLOR_ATTACHMENTS_EXT 0x8CDF
+#define GL_MAX_DRAW_BUFFERS_EXT 0x8824
+#define GL_DRAW_BUFFER0_EXT 0x8825
+#define GL_DRAW_BUFFER1_EXT 0x8826
+#define GL_DRAW_BUFFER2_EXT 0x8827
+#define GL_DRAW_BUFFER3_EXT 0x8828
+#define GL_DRAW_BUFFER4_EXT 0x8829
+#define GL_DRAW_BUFFER5_EXT 0x882A
+#define GL_DRAW_BUFFER6_EXT 0x882B
+#define GL_DRAW_BUFFER7_EXT 0x882C
+#define GL_DRAW_BUFFER8_EXT 0x882D
+#define GL_DRAW_BUFFER9_EXT 0x882E
+#define GL_DRAW_BUFFER10_EXT 0x882F
+#define GL_DRAW_BUFFER11_EXT 0x8830
+#define GL_DRAW_BUFFER12_EXT 0x8831
+#define GL_DRAW_BUFFER13_EXT 0x8832
+#define GL_DRAW_BUFFER14_EXT 0x8833
+#define GL_DRAW_BUFFER15_EXT 0x8834
+#define GL_COLOR_ATTACHMENT0_EXT 0x8CE0
+#define GL_COLOR_ATTACHMENT1_EXT 0x8CE1
+#define GL_COLOR_ATTACHMENT2_EXT 0x8CE2
+#define GL_COLOR_ATTACHMENT3_EXT 0x8CE3
+#define GL_COLOR_ATTACHMENT4_EXT 0x8CE4
+#define GL_COLOR_ATTACHMENT5_EXT 0x8CE5
+#define GL_COLOR_ATTACHMENT6_EXT 0x8CE6
+#define GL_COLOR_ATTACHMENT7_EXT 0x8CE7
+#define GL_COLOR_ATTACHMENT8_EXT 0x8CE8
+#define GL_COLOR_ATTACHMENT9_EXT 0x8CE9
+#define GL_COLOR_ATTACHMENT10_EXT 0x8CEA
+#define GL_COLOR_ATTACHMENT11_EXT 0x8CEB
+#define GL_COLOR_ATTACHMENT12_EXT 0x8CEC
+#define GL_COLOR_ATTACHMENT13_EXT 0x8CED
+#define GL_COLOR_ATTACHMENT14_EXT 0x8CEE
+#define GL_COLOR_ATTACHMENT15_EXT 0x8CEF
+#endif
+
+/* GL_EXT_map_buffer_range */
+#ifndef GL_EXT_map_buffer_range
+#define GL_MAP_READ_BIT_EXT 0x0001
+#define GL_MAP_WRITE_BIT_EXT 0x0002
+#define GL_MAP_INVALIDATE_RANGE_BIT_EXT 0x0004
+#define GL_MAP_INVALIDATE_BUFFER_BIT_EXT 0x0008
+#define GL_MAP_FLUSH_EXPLICIT_BIT_EXT 0x0010
+#define GL_MAP_UNSYNCHRONIZED_BIT_EXT 0x0020
+#endif
+
+/* GL_EXT_multisampled_render_to_texture */
+#ifndef GL_EXT_multisampled_render_to_texture
+#define GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_SAMPLES_EXT 0x8D6C
+/* reuse values from GL_EXT_framebuffer_multisample (desktop extension) */
+#define GL_RENDERBUFFER_SAMPLES_EXT 0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_EXT 0x8D56
+#define GL_MAX_SAMPLES_EXT 0x8D57
+#endif
+
+/* GL_EXT_multiview_draw_buffers */
+#ifndef GL_EXT_multiview_draw_buffers
+#define GL_COLOR_ATTACHMENT_EXT 0x90F0
+#define GL_MULTIVIEW_EXT 0x90F1
+#define GL_DRAW_BUFFER_EXT 0x0C01
+#define GL_READ_BUFFER_EXT 0x0C02
+#define GL_MAX_MULTIVIEW_BUFFERS_EXT 0x90F2
+#endif
+
+/* GL_EXT_multi_draw_arrays */
+/* No new tokens introduced by this extension. */
+
+/* GL_EXT_occlusion_query_boolean */
+#ifndef GL_EXT_occlusion_query_boolean
+#define GL_ANY_SAMPLES_PASSED_EXT 0x8C2F
+#define GL_ANY_SAMPLES_PASSED_CONSERVATIVE_EXT 0x8D6A
+#define GL_CURRENT_QUERY_EXT 0x8865
+#define GL_QUERY_RESULT_EXT 0x8866
+#define GL_QUERY_RESULT_AVAILABLE_EXT 0x8867
+#endif
+
+/* GL_EXT_read_format_bgra */
+#ifndef GL_EXT_read_format_bgra
+#define GL_BGRA_EXT 0x80E1
+#define GL_UNSIGNED_SHORT_4_4_4_4_REV_EXT 0x8365
+#define GL_UNSIGNED_SHORT_1_5_5_5_REV_EXT 0x8366
+#endif
+
+/* GL_EXT_robustness */
+#ifndef GL_EXT_robustness
+/* reuse GL_NO_ERROR */
+#define GL_GUILTY_CONTEXT_RESET_EXT 0x8253
+#define GL_INNOCENT_CONTEXT_RESET_EXT 0x8254
+#define GL_UNKNOWN_CONTEXT_RESET_EXT 0x8255
+#define GL_CONTEXT_ROBUST_ACCESS_EXT 0x90F3
+#define GL_RESET_NOTIFICATION_STRATEGY_EXT 0x8256
+#define GL_LOSE_CONTEXT_ON_RESET_EXT 0x8252
+#define GL_NO_RESET_NOTIFICATION_EXT 0x8261
+#endif
+
+/* GL_EXT_separate_shader_objects */
+#ifndef GL_EXT_separate_shader_objects
+#define GL_VERTEX_SHADER_BIT_EXT 0x00000001
+#define GL_FRAGMENT_SHADER_BIT_EXT 0x00000002
+#define GL_ALL_SHADER_BITS_EXT 0xFFFFFFFF
+#define GL_PROGRAM_SEPARABLE_EXT 0x8258
+#define GL_ACTIVE_PROGRAM_EXT 0x8259
+#define GL_PROGRAM_PIPELINE_BINDING_EXT 0x825A
+#endif
+
+/* GL_EXT_shader_framebuffer_fetch */
+#ifndef GL_EXT_shader_framebuffer_fetch
+#define GL_FRAGMENT_SHADER_DISCARDS_SAMPLES_EXT 0x8A52
+#endif
+
+/* GL_EXT_shader_texture_lod */
+/* No new tokens introduced by this extension. */
+
+/* GL_EXT_shadow_samplers */
+#ifndef GL_EXT_shadow_samplers
+#define GL_TEXTURE_COMPARE_MODE_EXT 0x884C
+#define GL_TEXTURE_COMPARE_FUNC_EXT 0x884D
+#define GL_COMPARE_REF_TO_TEXTURE_EXT 0x884E
+#define GL_SAMPLER_2D_SHADOW_EXT 0x8B62
+#endif
+
+/* GL_EXT_sRGB */
+#ifndef GL_EXT_sRGB
+#define GL_SRGB_EXT 0x8C40
+#define GL_SRGB_ALPHA_EXT 0x8C42
+#define GL_SRGB8_ALPHA8_EXT 0x8C43
+#define GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING_EXT 0x8210
+#endif
+
+/* GL_EXT_texture_compression_dxt1 */
+#ifndef GL_EXT_texture_compression_dxt1
+#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
+#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
+#endif
+
+/* GL_EXT_texture_filter_anisotropic */
+#ifndef GL_EXT_texture_filter_anisotropic
+#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
+#define GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT 0x84FF
+#endif
+
+/* GL_EXT_texture_format_BGRA8888 */
+#ifndef GL_EXT_texture_format_BGRA8888
+#define GL_BGRA_EXT 0x80E1
+#endif
+
+/* GL_EXT_texture_rg */
+#ifndef GL_EXT_texture_rg
+#define GL_RED_EXT 0x1903
+#define GL_RG_EXT 0x8227
+#define GL_R8_EXT 0x8229
+#define GL_RG8_EXT 0x822B
+#endif
+
+/* GL_EXT_texture_storage */
+#ifndef GL_EXT_texture_storage
+#define GL_TEXTURE_IMMUTABLE_FORMAT_EXT 0x912F
+#define GL_ALPHA8_EXT 0x803C
+#define GL_LUMINANCE8_EXT 0x8040
+#define GL_LUMINANCE8_ALPHA8_EXT 0x8045
+#define GL_RGBA32F_EXT 0x8814
+#define GL_RGB32F_EXT 0x8815
+#define GL_ALPHA32F_EXT 0x8816
+#define GL_LUMINANCE32F_EXT 0x8818
+#define GL_LUMINANCE_ALPHA32F_EXT 0x8819
+/* reuse GL_RGBA16F_EXT */
+/* reuse GL_RGB16F_EXT */
+#define GL_ALPHA16F_EXT 0x881C
+#define GL_LUMINANCE16F_EXT 0x881E
+#define GL_LUMINANCE_ALPHA16F_EXT 0x881F
+#define GL_RGB10_A2_EXT 0x8059
+#define GL_RGB10_EXT 0x8052
+#define GL_BGRA8_EXT 0x93A1
+#define GL_R8_EXT 0x8229
+#define GL_RG8_EXT 0x822B
+#define GL_R32F_EXT 0x822E
+#define GL_RG32F_EXT 0x8230
+#define GL_R16F_EXT 0x822D
+#define GL_RG16F_EXT 0x822F
+#endif
+
+/* GL_EXT_texture_type_2_10_10_10_REV */
+#ifndef GL_EXT_texture_type_2_10_10_10_REV
+#define GL_UNSIGNED_INT_2_10_10_10_REV_EXT 0x8368
+#endif
+
+/* GL_EXT_unpack_subimage */
+#ifndef GL_EXT_unpack_subimage
+#define GL_UNPACK_ROW_LENGTH_EXT 0x0CF2
+#define GL_UNPACK_SKIP_ROWS_EXT 0x0CF3
+#define GL_UNPACK_SKIP_PIXELS_EXT 0x0CF4
+#endif
+
+/*------------------------------------------------------------------------*
+ * DMP extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_DMP_shader_binary */
+#ifndef GL_DMP_shader_binary
+#define GL_SHADER_BINARY_DMP 0x9250
+#endif
+
+/*------------------------------------------------------------------------*
+ * FJ extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_FJ_shader_binary_GCCSO */
+#ifndef GL_FJ_shader_binary_GCCSO
+#define GL_GCCSO_SHADER_BINARY_FJ 0x9260
+#endif
+
+/*------------------------------------------------------------------------*
+ * IMG extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_IMG_program_binary */
+#ifndef GL_IMG_program_binary
+#define GL_SGX_PROGRAM_BINARY_IMG 0x9130
+#endif
+
+/* GL_IMG_read_format */
+#ifndef GL_IMG_read_format
+#define GL_BGRA_IMG 0x80E1
+#define GL_UNSIGNED_SHORT_4_4_4_4_REV_IMG 0x8365
+#endif
+
+/* GL_IMG_shader_binary */
+#ifndef GL_IMG_shader_binary
+#define GL_SGX_BINARY_IMG 0x8C0A
+#endif
+
+/* GL_IMG_texture_compression_pvrtc */
+#ifndef GL_IMG_texture_compression_pvrtc
+#define GL_COMPRESSED_RGB_PVRTC_4BPPV1_IMG 0x8C00
+#define GL_COMPRESSED_RGB_PVRTC_2BPPV1_IMG 0x8C01
+#define GL_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG 0x8C02
+#define GL_COMPRESSED_RGBA_PVRTC_2BPPV1_IMG 0x8C03
+#endif
+
+/* GL_IMG_texture_compression_pvrtc2 */
+#ifndef GL_IMG_texture_compression_pvrtc2
+#define GL_COMPRESSED_RGBA_PVRTC_2BPPV2_IMG 0x9137
+#define GL_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG 0x9138
+#endif
+
+/* GL_IMG_multisampled_render_to_texture */
+#ifndef GL_IMG_multisampled_render_to_texture
+#define GL_RENDERBUFFER_SAMPLES_IMG 0x9133
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_IMG 0x9134
+#define GL_MAX_SAMPLES_IMG 0x9135
+#define GL_TEXTURE_SAMPLES_IMG 0x9136
+#endif
+
+/*------------------------------------------------------------------------*
+ * NV extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_NV_coverage_sample */
+#ifndef GL_NV_coverage_sample
+#define GL_COVERAGE_COMPONENT_NV 0x8ED0
+#define GL_COVERAGE_COMPONENT4_NV 0x8ED1
+#define GL_COVERAGE_ATTACHMENT_NV 0x8ED2
+#define GL_COVERAGE_BUFFERS_NV 0x8ED3
+#define GL_COVERAGE_SAMPLES_NV 0x8ED4
+#define GL_COVERAGE_ALL_FRAGMENTS_NV 0x8ED5
+#define GL_COVERAGE_EDGE_FRAGMENTS_NV 0x8ED6
+#define GL_COVERAGE_AUTOMATIC_NV 0x8ED7
+#define GL_COVERAGE_BUFFER_BIT_NV 0x00008000
+#endif
+
+/* GL_NV_depth_nonlinear */
+#ifndef GL_NV_depth_nonlinear
+#define GL_DEPTH_COMPONENT16_NONLINEAR_NV 0x8E2C
+#endif
+
+/* GL_NV_draw_buffers */
+#ifndef GL_NV_draw_buffers
+#define GL_MAX_DRAW_BUFFERS_NV 0x8824
+#define GL_DRAW_BUFFER0_NV 0x8825
+#define GL_DRAW_BUFFER1_NV 0x8826
+#define GL_DRAW_BUFFER2_NV 0x8827
+#define GL_DRAW_BUFFER3_NV 0x8828
+#define GL_DRAW_BUFFER4_NV 0x8829
+#define GL_DRAW_BUFFER5_NV 0x882A
+#define GL_DRAW_BUFFER6_NV 0x882B
+#define GL_DRAW_BUFFER7_NV 0x882C
+#define GL_DRAW_BUFFER8_NV 0x882D
+#define GL_DRAW_BUFFER9_NV 0x882E
+#define GL_DRAW_BUFFER10_NV 0x882F
+#define GL_DRAW_BUFFER11_NV 0x8830
+#define GL_DRAW_BUFFER12_NV 0x8831
+#define GL_DRAW_BUFFER13_NV 0x8832
+#define GL_DRAW_BUFFER14_NV 0x8833
+#define GL_DRAW_BUFFER15_NV 0x8834
+#define GL_COLOR_ATTACHMENT0_NV 0x8CE0
+#define GL_COLOR_ATTACHMENT1_NV 0x8CE1
+#define GL_COLOR_ATTACHMENT2_NV 0x8CE2
+#define GL_COLOR_ATTACHMENT3_NV 0x8CE3
+#define GL_COLOR_ATTACHMENT4_NV 0x8CE4
+#define GL_COLOR_ATTACHMENT5_NV 0x8CE5
+#define GL_COLOR_ATTACHMENT6_NV 0x8CE6
+#define GL_COLOR_ATTACHMENT7_NV 0x8CE7
+#define GL_COLOR_ATTACHMENT8_NV 0x8CE8
+#define GL_COLOR_ATTACHMENT9_NV 0x8CE9
+#define GL_COLOR_ATTACHMENT10_NV 0x8CEA
+#define GL_COLOR_ATTACHMENT11_NV 0x8CEB
+#define GL_COLOR_ATTACHMENT12_NV 0x8CEC
+#define GL_COLOR_ATTACHMENT13_NV 0x8CED
+#define GL_COLOR_ATTACHMENT14_NV 0x8CEE
+#define GL_COLOR_ATTACHMENT15_NV 0x8CEF
+#endif
+
+/* GL_NV_draw_instanced */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_fbo_color_attachments */
+#ifndef GL_NV_fbo_color_attachments
+#define GL_MAX_COLOR_ATTACHMENTS_NV 0x8CDF
+/* GL_COLOR_ATTACHMENT{0-15}_NV defined in GL_NV_draw_buffers already. */
+#endif
+
+/* GL_NV_fence */
+#ifndef GL_NV_fence
+#define GL_ALL_COMPLETED_NV 0x84F2
+#define GL_FENCE_STATUS_NV 0x84F3
+#define GL_FENCE_CONDITION_NV 0x84F4
+#endif
+
+/* GL_NV_framebuffer_blit */
+#ifndef GL_NV_framebuffer_blit
+#define GL_READ_FRAMEBUFFER_NV 0x8CA8
+#define GL_DRAW_FRAMEBUFFER_NV 0x8CA9
+#define GL_DRAW_FRAMEBUFFER_BINDING_NV 0x8CA6
+#define GL_READ_FRAMEBUFFER_BINDING_NV 0x8CAA
+#endif
+
+/* GL_NV_framebuffer_multisample */
+#ifndef GL_NV_framebuffer_multisample
+#define GL_RENDERBUFFER_SAMPLES_NV 0x8CAB
+#define GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE_NV 0x8D56
+#define GL_MAX_SAMPLES_NV 0x8D57
+#endif
+
+/* GL_NV_generate_mipmap_sRGB */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_instanced_arrays */
+#ifndef GL_NV_instanced_arrays
+#define GL_VERTEX_ATTRIB_ARRAY_DIVISOR_NV 0x88FE
+#endif
+
+/* GL_NV_read_buffer */
+#ifndef GL_NV_read_buffer
+#define GL_READ_BUFFER_NV 0x0C02
+#endif
+
+/* GL_NV_read_buffer_front */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_read_depth */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_read_depth_stencil */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_read_stencil */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_shadow_samplers_array */
+#ifndef GL_NV_shadow_samplers_array
+#define GL_SAMPLER_2D_ARRAY_SHADOW_NV 0x8DC4
+#endif
+
+/* GL_NV_shadow_samplers_cube */
+#ifndef GL_NV_shadow_samplers_cube
+#define GL_SAMPLER_CUBE_SHADOW_NV 0x8DC5
+#endif
+
+/* GL_NV_sRGB_formats */
+#ifndef GL_NV_sRGB_formats
+#define GL_SLUMINANCE_NV 0x8C46
+#define GL_SLUMINANCE_ALPHA_NV 0x8C44
+#define GL_SRGB8_NV 0x8C41
+#define GL_SLUMINANCE8_NV 0x8C47
+#define GL_SLUMINANCE8_ALPHA8_NV 0x8C45
+#define GL_COMPRESSED_SRGB_S3TC_DXT1_NV 0x8C4C
+#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_NV 0x8C4D
+#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT3_NV 0x8C4E
+#define GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT5_NV 0x8C4F
+#define GL_ETC1_SRGB8_NV 0x88EE
+#endif
+
+/* GL_NV_texture_border_clamp */
+#ifndef GL_NV_texture_border_clamp
+#define GL_TEXTURE_BORDER_COLOR_NV 0x1004
+#define GL_CLAMP_TO_BORDER_NV 0x812D
+#endif
+
+/* GL_NV_texture_compression_s3tc_update */
+/* No new tokens introduced by this extension. */
+
+/* GL_NV_texture_npot_2D_mipmap */
+/* No new tokens introduced by this extension. */
+
+/*------------------------------------------------------------------------*
+ * QCOM extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_QCOM_alpha_test */
+#ifndef GL_QCOM_alpha_test
+#define GL_ALPHA_TEST_QCOM 0x0BC0
+#define GL_ALPHA_TEST_FUNC_QCOM 0x0BC1
+#define GL_ALPHA_TEST_REF_QCOM 0x0BC2
+#endif
+
+/* GL_QCOM_binning_control */
+#ifndef GL_QCOM_binning_control
+#define GL_BINNING_CONTROL_HINT_QCOM 0x8FB0
+#define GL_CPU_OPTIMIZED_QCOM 0x8FB1
+#define GL_GPU_OPTIMIZED_QCOM 0x8FB2
+#define GL_RENDER_DIRECT_TO_FRAMEBUFFER_QCOM 0x8FB3
+#endif
+
+/* GL_QCOM_driver_control */
+/* No new tokens introduced by this extension. */
+
+/* GL_QCOM_extended_get */
+#ifndef GL_QCOM_extended_get
+#define GL_TEXTURE_WIDTH_QCOM 0x8BD2
+#define GL_TEXTURE_HEIGHT_QCOM 0x8BD3
+#define GL_TEXTURE_DEPTH_QCOM 0x8BD4
+#define GL_TEXTURE_INTERNAL_FORMAT_QCOM 0x8BD5
+#define GL_TEXTURE_FORMAT_QCOM 0x8BD6
+#define GL_TEXTURE_TYPE_QCOM 0x8BD7
+#define GL_TEXTURE_IMAGE_VALID_QCOM 0x8BD8
+#define GL_TEXTURE_NUM_LEVELS_QCOM 0x8BD9
+#define GL_TEXTURE_TARGET_QCOM 0x8BDA
+#define GL_TEXTURE_OBJECT_VALID_QCOM 0x8BDB
+#define GL_STATE_RESTORE 0x8BDC
+#endif
+
+/* GL_QCOM_extended_get2 */
+/* No new tokens introduced by this extension. */
+
+/* GL_QCOM_perfmon_global_mode */
+#ifndef GL_QCOM_perfmon_global_mode
+#define GL_PERFMON_GLOBAL_MODE_QCOM 0x8FA0
+#endif
+
+/* GL_QCOM_writeonly_rendering */
+#ifndef GL_QCOM_writeonly_rendering
+#define GL_WRITEONLY_RENDERING_QCOM 0x8823
+#endif
+
+/* GL_QCOM_tiled_rendering */
+#ifndef GL_QCOM_tiled_rendering
+#define GL_COLOR_BUFFER_BIT0_QCOM 0x00000001
+#define GL_COLOR_BUFFER_BIT1_QCOM 0x00000002
+#define GL_COLOR_BUFFER_BIT2_QCOM 0x00000004
+#define GL_COLOR_BUFFER_BIT3_QCOM 0x00000008
+#define GL_COLOR_BUFFER_BIT4_QCOM 0x00000010
+#define GL_COLOR_BUFFER_BIT5_QCOM 0x00000020
+#define GL_COLOR_BUFFER_BIT6_QCOM 0x00000040
+#define GL_COLOR_BUFFER_BIT7_QCOM 0x00000080
+#define GL_DEPTH_BUFFER_BIT0_QCOM 0x00000100
+#define GL_DEPTH_BUFFER_BIT1_QCOM 0x00000200
+#define GL_DEPTH_BUFFER_BIT2_QCOM 0x00000400
+#define GL_DEPTH_BUFFER_BIT3_QCOM 0x00000800
+#define GL_DEPTH_BUFFER_BIT4_QCOM 0x00001000
+#define GL_DEPTH_BUFFER_BIT5_QCOM 0x00002000
+#define GL_DEPTH_BUFFER_BIT6_QCOM 0x00004000
+#define GL_DEPTH_BUFFER_BIT7_QCOM 0x00008000
+#define GL_STENCIL_BUFFER_BIT0_QCOM 0x00010000
+#define GL_STENCIL_BUFFER_BIT1_QCOM 0x00020000
+#define GL_STENCIL_BUFFER_BIT2_QCOM 0x00040000
+#define GL_STENCIL_BUFFER_BIT3_QCOM 0x00080000
+#define GL_STENCIL_BUFFER_BIT4_QCOM 0x00100000
+#define GL_STENCIL_BUFFER_BIT5_QCOM 0x00200000
+#define GL_STENCIL_BUFFER_BIT6_QCOM 0x00400000
+#define GL_STENCIL_BUFFER_BIT7_QCOM 0x00800000
+#define GL_MULTISAMPLE_BUFFER_BIT0_QCOM 0x01000000
+#define GL_MULTISAMPLE_BUFFER_BIT1_QCOM 0x02000000
+#define GL_MULTISAMPLE_BUFFER_BIT2_QCOM 0x04000000
+#define GL_MULTISAMPLE_BUFFER_BIT3_QCOM 0x08000000
+#define GL_MULTISAMPLE_BUFFER_BIT4_QCOM 0x10000000
+#define GL_MULTISAMPLE_BUFFER_BIT5_QCOM 0x20000000
+#define GL_MULTISAMPLE_BUFFER_BIT6_QCOM 0x40000000
+#define GL_MULTISAMPLE_BUFFER_BIT7_QCOM 0x80000000
+#endif
+
+/*------------------------------------------------------------------------*
+ * VIV extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_VIV_shader_binary */
+#ifndef GL_VIV_shader_binary
+#define GL_SHADER_BINARY_VIV 0x8FC4
+#endif
+
+/*------------------------------------------------------------------------*
+ * End of extension tokens, start of corresponding extension functions
+ *------------------------------------------------------------------------*/
+
+/*------------------------------------------------------------------------*
+ * OES extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_OES_compressed_ETC1_RGB8_texture */
+#ifndef GL_OES_compressed_ETC1_RGB8_texture
+#define GL_OES_compressed_ETC1_RGB8_texture 1
+#endif
+
+/* GL_OES_compressed_paletted_texture */
+#ifndef GL_OES_compressed_paletted_texture
+#define GL_OES_compressed_paletted_texture 1
+#endif
+
+/* GL_OES_depth24 */
+#ifndef GL_OES_depth24
+#define GL_OES_depth24 1
+#endif
+
+/* GL_OES_depth32 */
+#ifndef GL_OES_depth32
+#define GL_OES_depth32 1
+#endif
+
+/* GL_OES_depth_texture */
+#ifndef GL_OES_depth_texture
+#define GL_OES_depth_texture 1
+#endif
+
+/* GL_OES_EGL_image */
+#ifndef GL_OES_EGL_image
+#define GL_OES_EGL_image 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glEGLImageTargetTexture2DOES (GLenum target, GLeglImageOES image);
+GL_APICALL void GL_APIENTRY glEGLImageTargetRenderbufferStorageOES (GLenum target, GLeglImageOES image);
+#endif
+typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETTEXTURE2DOESPROC) (GLenum target, GLeglImageOES image);
+typedef void (GL_APIENTRYP PFNGLEGLIMAGETARGETRENDERBUFFERSTORAGEOESPROC) (GLenum target, GLeglImageOES image);
+#endif
+
+/* GL_OES_EGL_image_external */
+#ifndef GL_OES_EGL_image_external
+#define GL_OES_EGL_image_external 1
+/* glEGLImageTargetTexture2DOES defined in GL_OES_EGL_image already. */
+#endif
+
+/* GL_OES_element_index_uint */
+#ifndef GL_OES_element_index_uint
+#define GL_OES_element_index_uint 1
+#endif
+
+/* GL_OES_fbo_render_mipmap */
+#ifndef GL_OES_fbo_render_mipmap
+#define GL_OES_fbo_render_mipmap 1
+#endif
+
+/* GL_OES_fragment_precision_high */
+#ifndef GL_OES_fragment_precision_high
+#define GL_OES_fragment_precision_high 1
+#endif
+
+/* GL_OES_get_program_binary */
+#ifndef GL_OES_get_program_binary
+#define GL_OES_get_program_binary 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glGetProgramBinaryOES (GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary);
+GL_APICALL void GL_APIENTRY glProgramBinaryOES (GLuint program, GLenum binaryFormat, const GLvoid *binary, GLint length);
+#endif
+typedef void (GL_APIENTRYP PFNGLGETPROGRAMBINARYOESPROC) (GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, GLvoid *binary);
+typedef void (GL_APIENTRYP PFNGLPROGRAMBINARYOESPROC) (GLuint program, GLenum binaryFormat, const GLvoid *binary, GLint length);
+#endif
+
+/* GL_OES_mapbuffer */
+#ifndef GL_OES_mapbuffer
+#define GL_OES_mapbuffer 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void* GL_APIENTRY glMapBufferOES (GLenum target, GLenum access);
+GL_APICALL GLboolean GL_APIENTRY glUnmapBufferOES (GLenum target);
+GL_APICALL void GL_APIENTRY glGetBufferPointervOES (GLenum target, GLenum pname, GLvoid** params);
+#endif
+typedef void* (GL_APIENTRYP PFNGLMAPBUFFEROESPROC) (GLenum target, GLenum access);
+typedef GLboolean (GL_APIENTRYP PFNGLUNMAPBUFFEROESPROC) (GLenum target);
+typedef void (GL_APIENTRYP PFNGLGETBUFFERPOINTERVOESPROC) (GLenum target, GLenum pname, GLvoid** params);
+#endif
+
+/* GL_OES_packed_depth_stencil */
+#ifndef GL_OES_packed_depth_stencil
+#define GL_OES_packed_depth_stencil 1
+#endif
+
+/* GL_OES_required_internalformat */
+#ifndef GL_OES_required_internalformat
+#define GL_OES_required_internalformat 1
+#endif
+
+/* GL_OES_rgb8_rgba8 */
+#ifndef GL_OES_rgb8_rgba8
+#define GL_OES_rgb8_rgba8 1
+#endif
+
+/* GL_OES_standard_derivatives */
+#ifndef GL_OES_standard_derivatives
+#define GL_OES_standard_derivatives 1
+#endif
+
+/* GL_OES_stencil1 */
+#ifndef GL_OES_stencil1
+#define GL_OES_stencil1 1
+#endif
+
+/* GL_OES_stencil4 */
+#ifndef GL_OES_stencil4
+#define GL_OES_stencil4 1
+#endif
+
+#ifndef GL_OES_surfaceless_context
+#define GL_OES_surfaceless_context 1
+#endif
+
+/* GL_OES_texture_3D */
+#ifndef GL_OES_texture_3D
+#define GL_OES_texture_3D 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glTexImage3DOES (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid* pixels);
+GL_APICALL void GL_APIENTRY glTexSubImage3DOES (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid* pixels);
+GL_APICALL void GL_APIENTRY glCopyTexSubImage3DOES (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glCompressedTexImage3DOES (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid* data);
+GL_APICALL void GL_APIENTRY glCompressedTexSubImage3DOES (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid* data);
+GL_APICALL void GL_APIENTRY glFramebufferTexture3DOES (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
+#endif
+typedef void (GL_APIENTRYP PFNGLTEXIMAGE3DOESPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid* pixels);
+typedef void (GL_APIENTRYP PFNGLTEXSUBIMAGE3DOESPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid* pixels);
+typedef void (GL_APIENTRYP PFNGLCOPYTEXSUBIMAGE3DOESPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLCOMPRESSEDTEXIMAGE3DOESPROC) (GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid* data);
+typedef void (GL_APIENTRYP PFNGLCOMPRESSEDTEXSUBIMAGE3DOESPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid* data);
+typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE3DOES) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLint zoffset);
+#endif
+
+/* GL_OES_texture_float */
+#ifndef GL_OES_texture_float
+#define GL_OES_texture_float 1
+#endif
+
+/* GL_OES_texture_float_linear */
+#ifndef GL_OES_texture_float_linear
+#define GL_OES_texture_float_linear 1
+#endif
+
+/* GL_OES_texture_half_float */
+#ifndef GL_OES_texture_half_float
+#define GL_OES_texture_half_float 1
+#endif
+
+/* GL_OES_texture_half_float_linear */
+#ifndef GL_OES_texture_half_float_linear
+#define GL_OES_texture_half_float_linear 1
+#endif
+
+/* GL_OES_texture_npot */
+#ifndef GL_OES_texture_npot
+#define GL_OES_texture_npot 1
+#endif
+
+/* GL_OES_vertex_array_object */
+#ifndef GL_OES_vertex_array_object
+#define GL_OES_vertex_array_object 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glBindVertexArrayOES (GLuint array);
+GL_APICALL void GL_APIENTRY glDeleteVertexArraysOES (GLsizei n, const GLuint *arrays);
+GL_APICALL void GL_APIENTRY glGenVertexArraysOES (GLsizei n, GLuint *arrays);
+GL_APICALL GLboolean GL_APIENTRY glIsVertexArrayOES (GLuint array);
+#endif
+typedef void (GL_APIENTRYP PFNGLBINDVERTEXARRAYOESPROC) (GLuint array);
+typedef void (GL_APIENTRYP PFNGLDELETEVERTEXARRAYSOESPROC) (GLsizei n, const GLuint *arrays);
+typedef void (GL_APIENTRYP PFNGLGENVERTEXARRAYSOESPROC) (GLsizei n, GLuint *arrays);
+typedef GLboolean (GL_APIENTRYP PFNGLISVERTEXARRAYOESPROC) (GLuint array);
+#endif
+
+/* GL_OES_vertex_half_float */
+#ifndef GL_OES_vertex_half_float
+#define GL_OES_vertex_half_float 1
+#endif
+
+/* GL_OES_vertex_type_10_10_10_2 */
+#ifndef GL_OES_vertex_type_10_10_10_2
+#define GL_OES_vertex_type_10_10_10_2 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * KHR extension functions
+ *------------------------------------------------------------------------*/
+
+#ifndef GL_KHR_debug
+#define GL_KHR_debug 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDebugMessageControlKHR (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
+GL_APICALL void GL_APIENTRY glDebugMessageInsertKHR (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *buf);
+GL_APICALL void GL_APIENTRY glDebugMessageCallbackKHR (GLDEBUGPROCKHR callback, const void *userParam);
+GL_APICALL GLuint GL_APIENTRY glGetDebugMessageLogKHR (GLuint count, GLsizei bufsize, GLenum *sources, GLenum *types, GLuint *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog);
+GL_APICALL void GL_APIENTRY glPushDebugGroupKHR (GLenum source, GLuint id, GLsizei length, const GLchar *message);
+GL_APICALL void GL_APIENTRY glPopDebugGroupKHR (void);
+GL_APICALL void GL_APIENTRY glObjectLabelKHR (GLenum identifier, GLuint name, GLsizei length, const GLchar *label);
+GL_APICALL void GL_APIENTRY glGetObjectLabelKHR (GLenum identifier, GLuint name, GLsizei bufSize, GLsizei *length, GLchar *label);
+GL_APICALL void GL_APIENTRY glObjectPtrLabelKHR (const void *ptr, GLsizei length, const GLchar *label);
+GL_APICALL void GL_APIENTRY glGetObjectPtrLabelKHR (const void *ptr, GLsizei bufSize, GLsizei *length, GLchar *label);
+GL_APICALL void GL_APIENTRY glGetPointervKHR (GLenum pname, void **params);
+#endif
+typedef void (GL_APIENTRYP PFNGLDEBUGMESSAGECONTROLKHRPROC) (GLenum source, GLenum type, GLenum severity, GLsizei count, const GLuint *ids, GLboolean enabled);
+typedef void (GL_APIENTRYP PFNGLDEBUGMESSAGEINSERTKHRPROC) (GLenum source, GLenum type, GLuint id, GLenum severity, GLsizei length, const GLchar *buf);
+typedef void (GL_APIENTRYP PFNGLDEBUGMESSAGECALLBACKKHRPROC) (GLDEBUGPROCKHR callback, const void *userParam);
+typedef GLuint (GL_APIENTRYP PFNGLGETDEBUGMESSAGELOGKHRPROC) (GLuint count, GLsizei bufsize, GLenum *sources, GLenum *types, GLuint *ids, GLenum *severities, GLsizei *lengths, GLchar *messageLog);
+typedef void (GL_APIENTRYP PFNGLPUSHDEBUGGROUPKHRPROC) (GLenum source, GLuint id, GLsizei length, const GLchar *message);
+typedef void (GL_APIENTRYP PFNGLPOPDEBUGGROUPKHRPROC) (void);
+typedef void (GL_APIENTRYP PFNGLOBJECTLABELKHRPROC) (GLenum identifier, GLuint name, GLsizei length, const GLchar *label);
+typedef void (GL_APIENTRYP PFNGLGETOBJECTLABELKHRPROC) (GLenum identifier, GLuint name, GLsizei bufSize, GLsizei *length, GLchar *label);
+typedef void (GL_APIENTRYP PFNGLOBJECTPTRLABELKHRPROC) (const void *ptr, GLsizei length, const GLchar *label);
+typedef void (GL_APIENTRYP PFNGLGETOBJECTPTRLABELKHRPROC) (const void *ptr, GLsizei bufSize, GLsizei *length, GLchar *label);
+typedef void (GL_APIENTRYP PFNGLGETPOINTERVKHRPROC) (GLenum pname, void **params);
+#endif
+
+#ifndef GL_KHR_texture_compression_astc_ldr
+#define GL_KHR_texture_compression_astc_ldr 1
+#endif
+
+
+/*------------------------------------------------------------------------*
+ * AMD extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_AMD_compressed_3DC_texture */
+#ifndef GL_AMD_compressed_3DC_texture
+#define GL_AMD_compressed_3DC_texture 1
+#endif
+
+/* GL_AMD_compressed_ATC_texture */
+#ifndef GL_AMD_compressed_ATC_texture
+#define GL_AMD_compressed_ATC_texture 1
+#endif
+
+/* AMD_performance_monitor */
+#ifndef GL_AMD_performance_monitor
+#define GL_AMD_performance_monitor 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glGetPerfMonitorGroupsAMD (GLint *numGroups, GLsizei groupsSize, GLuint *groups);
+GL_APICALL void GL_APIENTRY glGetPerfMonitorCountersAMD (GLuint group, GLint *numCounters, GLint *maxActiveCounters, GLsizei counterSize, GLuint *counters);
+GL_APICALL void GL_APIENTRY glGetPerfMonitorGroupStringAMD (GLuint group, GLsizei bufSize, GLsizei *length, GLchar *groupString);
+GL_APICALL void GL_APIENTRY glGetPerfMonitorCounterStringAMD (GLuint group, GLuint counter, GLsizei bufSize, GLsizei *length, GLchar *counterString);
+GL_APICALL void GL_APIENTRY glGetPerfMonitorCounterInfoAMD (GLuint group, GLuint counter, GLenum pname, GLvoid *data);
+GL_APICALL void GL_APIENTRY glGenPerfMonitorsAMD (GLsizei n, GLuint *monitors);
+GL_APICALL void GL_APIENTRY glDeletePerfMonitorsAMD (GLsizei n, GLuint *monitors);
+GL_APICALL void GL_APIENTRY glSelectPerfMonitorCountersAMD (GLuint monitor, GLboolean enable, GLuint group, GLint numCounters, GLuint *countersList);
+GL_APICALL void GL_APIENTRY glBeginPerfMonitorAMD (GLuint monitor);
+GL_APICALL void GL_APIENTRY glEndPerfMonitorAMD (GLuint monitor);
+GL_APICALL void GL_APIENTRY glGetPerfMonitorCounterDataAMD (GLuint monitor, GLenum pname, GLsizei dataSize, GLuint *data, GLint *bytesWritten);
+#endif
+typedef void (GL_APIENTRYP PFNGLGETPERFMONITORGROUPSAMDPROC) (GLint *numGroups, GLsizei groupsSize, GLuint *groups);
+typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERSAMDPROC) (GLuint group, GLint *numCounters, GLint *maxActiveCounters, GLsizei counterSize, GLuint *counters);
+typedef void (GL_APIENTRYP PFNGLGETPERFMONITORGROUPSTRINGAMDPROC) (GLuint group, GLsizei bufSize, GLsizei *length, GLchar *groupString);
+typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERSTRINGAMDPROC) (GLuint group, GLuint counter, GLsizei bufSize, GLsizei *length, GLchar *counterString);
+typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERINFOAMDPROC) (GLuint group, GLuint counter, GLenum pname, GLvoid *data);
+typedef void (GL_APIENTRYP PFNGLGENPERFMONITORSAMDPROC) (GLsizei n, GLuint *monitors);
+typedef void (GL_APIENTRYP PFNGLDELETEPERFMONITORSAMDPROC) (GLsizei n, GLuint *monitors);
+typedef void (GL_APIENTRYP PFNGLSELECTPERFMONITORCOUNTERSAMDPROC) (GLuint monitor, GLboolean enable, GLuint group, GLint numCounters, GLuint *countersList);
+typedef void (GL_APIENTRYP PFNGLBEGINPERFMONITORAMDPROC) (GLuint monitor);
+typedef void (GL_APIENTRYP PFNGLENDPERFMONITORAMDPROC) (GLuint monitor);
+typedef void (GL_APIENTRYP PFNGLGETPERFMONITORCOUNTERDATAAMDPROC) (GLuint monitor, GLenum pname, GLsizei dataSize, GLuint *data, GLint *bytesWritten);
+#endif
+
+/* GL_AMD_program_binary_Z400 */
+#ifndef GL_AMD_program_binary_Z400
+#define GL_AMD_program_binary_Z400 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * ANGLE extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_ANGLE_depth_texture */
+#ifndef GL_ANGLE_depth_texture
+#define GL_ANGLE_depth_texture 1
+#endif
+
+/* GL_ANGLE_framebuffer_blit */
+#ifndef GL_ANGLE_framebuffer_blit
+#define GL_ANGLE_framebuffer_blit 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glBlitFramebufferANGLE (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+#endif
+typedef void (GL_APIENTRYP PFNGLBLITFRAMEBUFFERANGLEPROC) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+#endif
+
+/* GL_ANGLE_framebuffer_multisample */
+#ifndef GL_ANGLE_framebuffer_multisample
+#define GL_ANGLE_framebuffer_multisample 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleANGLE (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+#endif
+typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEANGLEPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+#endif
+
+#ifndef GL_ANGLE_instanced_arrays
+#define GL_ANGLE_instanced_arrays 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDrawArraysInstancedANGLE (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+GL_APICALL void GL_APIENTRY glDrawElementsInstancedANGLE (GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei primcount);
+GL_APICALL void GL_APIENTRY glVertexAttribDivisorANGLE (GLuint index, GLuint divisor);
+#endif
+typedef void (GL_APIENTRYP PFNGLDRAWARRAYSINSTANCEDANGLEPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+typedef void (GL_APIENTRYP PFNGLDRAWELEMENTSINSTANCEDANGLEPROC) (GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei primcount);
+typedef void (GL_APIENTRYP PFNGLVERTEXATTRIBDIVISORANGLEPROC) (GLuint index, GLuint divisor);
+#endif
+
+/* GL_ANGLE_pack_reverse_row_order */
+#ifndef GL_ANGLE_pack_reverse_row_order
+#define GL_ANGLE_pack_reverse_row_order 1
+#endif
+
+/* GL_ANGLE_program_binary */
+#ifndef GL_ANGLE_program_binary
+#define GL_ANGLE_program_binary 1
+#endif
+
+/* GL_ANGLE_texture_compression_dxt3 */
+#ifndef GL_ANGLE_texture_compression_dxt3
+#define GL_ANGLE_texture_compression_dxt3 1
+#endif
+
+/* GL_ANGLE_texture_compression_dxt5 */
+#ifndef GL_ANGLE_texture_compression_dxt5
+#define GL_ANGLE_texture_compression_dxt5 1
+#endif
+
+/* GL_ANGLE_texture_usage */
+#ifndef GL_ANGLE_texture_usage
+#define GL_ANGLE_texture_usage 1
+#endif
+
+#ifndef GL_ANGLE_translated_shader_source
+#define GL_ANGLE_translated_shader_source 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glGetTranslatedShaderSourceANGLE (GLuint shader, GLsizei bufsize, GLsizei *length, GLchar *source);
+#endif
+typedef void (GL_APIENTRYP PFNGLGETTRANSLATEDSHADERSOURCEANGLEPROC) (GLuint shader, GLsizei bufsize, GLsizei *length, GLchar *source);
+#endif
+
+/*------------------------------------------------------------------------*
+ * APPLE extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_APPLE_copy_texture_levels */
+#ifndef GL_APPLE_copy_texture_levels
+#define GL_APPLE_copy_texture_levels 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glCopyTextureLevelsAPPLE (GLuint destinationTexture, GLuint sourceTexture, GLint sourceBaseLevel, GLsizei sourceLevelCount);
+#endif
+typedef void (GL_APIENTRYP PFNGLCOPYTEXTURELEVELSAPPLEPROC) (GLuint destinationTexture, GLuint sourceTexture, GLint sourceBaseLevel, GLsizei sourceLevelCount);
+#endif
+
+/* GL_APPLE_framebuffer_multisample */
+#ifndef GL_APPLE_framebuffer_multisample
+#define GL_APPLE_framebuffer_multisample 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleAPPLE (GLenum, GLsizei, GLenum, GLsizei, GLsizei);
+GL_APICALL void GL_APIENTRY glResolveMultisampleFramebufferAPPLE (void);
+#endif /* GL_GLEXT_PROTOTYPES */
+typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEAPPLEPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLRESOLVEMULTISAMPLEFRAMEBUFFERAPPLEPROC) (void);
+#endif
+
+/* GL_APPLE_rgb_422 */
+#ifndef GL_APPLE_rgb_422
+#define GL_APPLE_rgb_422 1
+#endif
+
+/* GL_APPLE_sync */
+#ifndef GL_APPLE_sync
+#define GL_APPLE_sync 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL GLsync GL_APIENTRY glFenceSyncAPPLE (GLenum condition, GLbitfield flags);
+GL_APICALL GLboolean GL_APIENTRY glIsSyncAPPLE (GLsync sync);
+GL_APICALL void GL_APIENTRY glDeleteSyncAPPLE (GLsync sync);
+GL_APICALL GLenum GL_APIENTRY glClientWaitSyncAPPLE (GLsync sync, GLbitfield flags, GLuint64 timeout);
+GL_APICALL void GL_APIENTRY glWaitSyncAPPLE (GLsync sync, GLbitfield flags, GLuint64 timeout);
+GL_APICALL void GL_APIENTRY glGetInteger64vAPPLE (GLenum pname, GLint64 *params);
+GL_APICALL void GL_APIENTRY glGetSyncivAPPLE (GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values);
+#endif
+typedef GLsync (GL_APIENTRYP PFNGLFENCESYNCAPPLEPROC) (GLenum condition, GLbitfield flags);
+typedef GLboolean (GL_APIENTRYP PFNGLISSYNCAPPLEPROC) (GLsync sync);
+typedef void (GL_APIENTRYP PFNGLDELETESYNCAPPLEPROC) (GLsync sync);
+typedef GLenum (GL_APIENTRYP PFNGLCLIENTWAITSYNCAPPLEPROC) (GLsync sync, GLbitfield flags, GLuint64 timeout);
+typedef void (GL_APIENTRYP PFNGLWAITSYNCAPPLEPROC) (GLsync sync, GLbitfield flags, GLuint64 timeout);
+typedef void (GL_APIENTRYP PFNGLGETINTEGER64VAPPLEPROC) (GLenum pname, GLint64 *params);
+typedef void (GL_APIENTRYP PFNGLGETSYNCIVAPPLEPROC) (GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values);
+#endif
+
+/* GL_APPLE_texture_format_BGRA8888 */
+#ifndef GL_APPLE_texture_format_BGRA8888
+#define GL_APPLE_texture_format_BGRA8888 1
+#endif
+
+/* GL_APPLE_texture_max_level */
+#ifndef GL_APPLE_texture_max_level
+#define GL_APPLE_texture_max_level 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * ARM extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_ARM_mali_program_binary */
+#ifndef GL_ARM_mali_program_binary
+#define GL_ARM_mali_program_binary 1
+#endif
+
+/* GL_ARM_mali_shader_binary */
+#ifndef GL_ARM_mali_shader_binary
+#define GL_ARM_mali_shader_binary 1
+#endif
+
+/* GL_ARM_rgba8 */
+#ifndef GL_ARM_rgba8
+#define GL_ARM_rgba8 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * EXT extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_EXT_blend_minmax */
+#ifndef GL_EXT_blend_minmax
+#define GL_EXT_blend_minmax 1
+#endif
+
+/* GL_EXT_color_buffer_half_float */
+#ifndef GL_EXT_color_buffer_half_float
+#define GL_EXT_color_buffer_half_float 1
+#endif
+
+/* GL_EXT_debug_label */
+#ifndef GL_EXT_debug_label
+#define GL_EXT_debug_label 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glLabelObjectEXT (GLenum type, GLuint object, GLsizei length, const GLchar *label);
+GL_APICALL void GL_APIENTRY glGetObjectLabelEXT (GLenum type, GLuint object, GLsizei bufSize, GLsizei *length, GLchar *label);
+#endif
+typedef void (GL_APIENTRYP PFNGLLABELOBJECTEXTPROC) (GLenum type, GLuint object, GLsizei length, const GLchar *label);
+typedef void (GL_APIENTRYP PFNGLGETOBJECTLABELEXTPROC) (GLenum type, GLuint object, GLsizei bufSize, GLsizei *length, GLchar *label);
+#endif
+
+/* GL_EXT_debug_marker */
+#ifndef GL_EXT_debug_marker
+#define GL_EXT_debug_marker 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glInsertEventMarkerEXT (GLsizei length, const GLchar *marker);
+GL_APICALL void GL_APIENTRY glPushGroupMarkerEXT (GLsizei length, const GLchar *marker);
+GL_APICALL void GL_APIENTRY glPopGroupMarkerEXT (void);
+#endif
+typedef void (GL_APIENTRYP PFNGLINSERTEVENTMARKEREXTPROC) (GLsizei length, const GLchar *marker);
+typedef void (GL_APIENTRYP PFNGLPUSHGROUPMARKEREXTPROC) (GLsizei length, const GLchar *marker);
+typedef void (GL_APIENTRYP PFNGLPOPGROUPMARKEREXTPROC) (void);
+#endif
+
+/* GL_EXT_discard_framebuffer */
+#ifndef GL_EXT_discard_framebuffer
+#define GL_EXT_discard_framebuffer 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDiscardFramebufferEXT (GLenum target, GLsizei numAttachments, const GLenum *attachments);
+#endif
+typedef void (GL_APIENTRYP PFNGLDISCARDFRAMEBUFFEREXTPROC) (GLenum target, GLsizei numAttachments, const GLenum *attachments);
+#endif
+
+#ifndef GL_EXT_disjoint_timer_query
+#define GL_EXT_disjoint_timer_query 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glGenQueriesEXT (GLsizei n, GLuint *ids);
+GL_APICALL void GL_APIENTRY glDeleteQueriesEXT (GLsizei n, const GLuint *ids);
+GL_APICALL GLboolean GL_APIENTRY glIsQueryEXT (GLuint id);
+GL_APICALL void GL_APIENTRY glBeginQueryEXT (GLenum target, GLuint id);
+GL_APICALL void GL_APIENTRY glEndQueryEXT (GLenum target);
+GL_APICALL void GL_APIENTRY glQueryCounterEXT (GLuint id, GLenum target);
+GL_APICALL void GL_APIENTRY glGetQueryivEXT (GLenum target, GLenum pname, GLint *params);
+GL_APICALL void GL_APIENTRY glGetQueryObjectivEXT (GLuint id, GLenum pname, GLint *params);
+GL_APICALL void GL_APIENTRY glGetQueryObjectuivEXT (GLuint id, GLenum pname, GLuint *params);
+GL_APICALL void GL_APIENTRY glGetQueryObjecti64vEXT (GLuint id, GLenum pname, GLint64 *params);
+GL_APICALL void GL_APIENTRY glGetQueryObjectui64vEXT (GLuint id, GLenum pname, GLuint64 *params);
+#endif
+typedef void (GL_APIENTRYP PFNGLGENQUERIESEXTPROC) (GLsizei n, GLuint *ids);
+typedef void (GL_APIENTRYP PFNGLDELETEQUERIESEXTPROC) (GLsizei n, const GLuint *ids);
+typedef GLboolean (GL_APIENTRYP PFNGLISQUERYEXTPROC) (GLuint id);
+typedef void (GL_APIENTRYP PFNGLBEGINQUERYEXTPROC) (GLenum target, GLuint id);
+typedef void (GL_APIENTRYP PFNGLENDQUERYEXTPROC) (GLenum target);
+typedef void (GL_APIENTRYP PFNGLQUERYCOUNTEREXTPROC) (GLuint id, GLenum target);
+typedef void (GL_APIENTRYP PFNGLGETQUERYIVEXTPROC) (GLenum target, GLenum pname, GLint *params);
+typedef void (GL_APIENTRYP PFNGLGETQUERYOBJECTIVEXTPROC) (GLuint id, GLenum pname, GLint *params);
+typedef void (GL_APIENTRYP PFNGLGETQUERYOBJECTUIVEXTPROC) (GLuint id, GLenum pname, GLuint *params);
+typedef void (GL_APIENTRYP PFNGLGETQUERYOBJECTI64VEXTPROC) (GLuint id, GLenum pname, GLint64 *params);
+typedef void (GL_APIENTRYP PFNGLGETQUERYOBJECTUI64VEXTPROC) (GLuint id, GLenum pname, GLuint64 *params);
+#endif /* GL_EXT_disjoint_timer_query */
+
+#ifndef GL_EXT_draw_buffers
+#define GL_EXT_draw_buffers 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDrawBuffersEXT (GLsizei n, const GLenum *bufs);
+#endif
+typedef void (GL_APIENTRYP PFNGLDRAWBUFFERSEXTPROC) (GLsizei n, const GLenum *bufs);
+#endif /* GL_EXT_draw_buffers */
+
+/* GL_EXT_map_buffer_range */
+#ifndef GL_EXT_map_buffer_range
+#define GL_EXT_map_buffer_range 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void* GL_APIENTRY glMapBufferRangeEXT (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
+GL_APICALL void GL_APIENTRY glFlushMappedBufferRangeEXT (GLenum target, GLintptr offset, GLsizeiptr length);
+#endif
+typedef void* (GL_APIENTRYP PFNGLMAPBUFFERRANGEEXTPROC) (GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
+typedef void (GL_APIENTRYP PFNGLFLUSHMAPPEDBUFFERRANGEEXTPROC) (GLenum target, GLintptr offset, GLsizeiptr length);
+#endif
+
+/* GL_EXT_multisampled_render_to_texture */
+#ifndef GL_EXT_multisampled_render_to_texture
+#define GL_EXT_multisampled_render_to_texture 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleEXT (GLenum, GLsizei, GLenum, GLsizei, GLsizei);
+GL_APICALL void GL_APIENTRY glFramebufferTexture2DMultisampleEXT (GLenum, GLenum, GLenum, GLuint, GLint, GLsizei);
+#endif
+typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEEXTPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEEXTPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLsizei samples);
+#endif
+
+/* GL_EXT_multiview_draw_buffers */
+#ifndef GL_EXT_multiview_draw_buffers
+#define GL_EXT_multiview_draw_buffers 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glReadBufferIndexedEXT (GLenum src, GLint index);
+GL_APICALL void GL_APIENTRY glDrawBuffersIndexedEXT (GLint n, const GLenum *location, const GLint *indices);
+GL_APICALL void GL_APIENTRY glGetIntegeri_vEXT (GLenum target, GLuint index, GLint *data);
+#endif
+typedef void (GL_APIENTRYP PFNGLREADBUFFERINDEXEDEXTPROC) (GLenum src, GLint index);
+typedef void (GL_APIENTRYP PFNGLDRAWBUFFERSINDEXEDEXTPROC) (GLint n, const GLenum *location, const GLint *indices);
+typedef void (GL_APIENTRYP PFNGLGETINTEGERI_VEXTPROC) (GLenum target, GLuint index, GLint *data);
+#endif
+
+#ifndef GL_EXT_multi_draw_arrays
+#define GL_EXT_multi_draw_arrays 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glMultiDrawArraysEXT (GLenum, const GLint *, const GLsizei *, GLsizei);
+GL_APICALL void GL_APIENTRY glMultiDrawElementsEXT (GLenum, const GLsizei *, GLenum, const GLvoid* *, GLsizei);
+#endif /* GL_GLEXT_PROTOTYPES */
+typedef void (GL_APIENTRYP PFNGLMULTIDRAWARRAYSEXTPROC) (GLenum mode, const GLint *first, const GLsizei *count, GLsizei primcount);
+typedef void (GL_APIENTRYP PFNGLMULTIDRAWELEMENTSEXTPROC) (GLenum mode, const GLsizei *count, GLenum type, const GLvoid* *indices, GLsizei primcount);
+#endif
+
+/* GL_EXT_occlusion_query_boolean */
+#ifndef GL_EXT_occlusion_query_boolean
+#define GL_EXT_occlusion_query_boolean 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glGenQueriesEXT (GLsizei n, GLuint *ids);
+GL_APICALL void GL_APIENTRY glDeleteQueriesEXT (GLsizei n, const GLuint *ids);
+GL_APICALL GLboolean GL_APIENTRY glIsQueryEXT (GLuint id);
+GL_APICALL void GL_APIENTRY glBeginQueryEXT (GLenum target, GLuint id);
+GL_APICALL void GL_APIENTRY glEndQueryEXT (GLenum target);
+GL_APICALL void GL_APIENTRY glGetQueryivEXT (GLenum target, GLenum pname, GLint *params);
+GL_APICALL void GL_APIENTRY glGetQueryObjectuivEXT (GLuint id, GLenum pname, GLuint *params);
+#endif
+typedef void (GL_APIENTRYP PFNGLGENQUERIESEXTPROC) (GLsizei n, GLuint *ids);
+typedef void (GL_APIENTRYP PFNGLDELETEQUERIESEXTPROC) (GLsizei n, const GLuint *ids);
+typedef GLboolean (GL_APIENTRYP PFNGLISQUERYEXTPROC) (GLuint id);
+typedef void (GL_APIENTRYP PFNGLBEGINQUERYEXTPROC) (GLenum target, GLuint id);
+typedef void (GL_APIENTRYP PFNGLENDQUERYEXTPROC) (GLenum target);
+typedef void (GL_APIENTRYP PFNGLGETQUERYIVEXTPROC) (GLenum target, GLenum pname, GLint *params);
+typedef void (GL_APIENTRYP PFNGLGETQUERYOBJECTUIVEXTPROC) (GLuint id, GLenum pname, GLuint *params);
+#endif
+
+/* GL_EXT_read_format_bgra */
+#ifndef GL_EXT_read_format_bgra
+#define GL_EXT_read_format_bgra 1
+#endif
+
+/* GL_EXT_robustness */
+#ifndef GL_EXT_robustness
+#define GL_EXT_robustness 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL GLenum GL_APIENTRY glGetGraphicsResetStatusEXT (void);
+GL_APICALL void GL_APIENTRY glReadnPixelsEXT (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize, void *data);
+GL_APICALL void GL_APIENTRY glGetnUniformfvEXT (GLuint program, GLint location, GLsizei bufSize, float *params);
+GL_APICALL void GL_APIENTRY glGetnUniformivEXT (GLuint program, GLint location, GLsizei bufSize, GLint *params);
+#endif
+typedef GLenum (GL_APIENTRYP PFNGLGETGRAPHICSRESETSTATUSEXTPROC) (void);
+typedef void (GL_APIENTRYP PFNGLREADNPIXELSEXTPROC) (GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLsizei bufSize, void *data);
+typedef void (GL_APIENTRYP PFNGLGETNUNIFORMFVEXTPROC) (GLuint program, GLint location, GLsizei bufSize, float *params);
+typedef void (GL_APIENTRYP PFNGLGETNUNIFORMIVEXTPROC) (GLuint program, GLint location, GLsizei bufSize, GLint *params);
+#endif
+
+/* GL_EXT_separate_shader_objects */
+#ifndef GL_EXT_separate_shader_objects
+#define GL_EXT_separate_shader_objects 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glUseProgramStagesEXT (GLuint pipeline, GLbitfield stages, GLuint program);
+GL_APICALL void GL_APIENTRY glActiveShaderProgramEXT (GLuint pipeline, GLuint program);
+GL_APICALL GLuint GL_APIENTRY glCreateShaderProgramvEXT (GLenum type, GLsizei count, const GLchar **strings);
+GL_APICALL void GL_APIENTRY glBindProgramPipelineEXT (GLuint pipeline);
+GL_APICALL void GL_APIENTRY glDeleteProgramPipelinesEXT (GLsizei n, const GLuint *pipelines);
+GL_APICALL void GL_APIENTRY glGenProgramPipelinesEXT (GLsizei n, GLuint *pipelines);
+GL_APICALL GLboolean GL_APIENTRY glIsProgramPipelineEXT (GLuint pipeline);
+GL_APICALL void GL_APIENTRY glProgramParameteriEXT (GLuint program, GLenum pname, GLint value);
+GL_APICALL void GL_APIENTRY glGetProgramPipelineivEXT (GLuint pipeline, GLenum pname, GLint *params);
+GL_APICALL void GL_APIENTRY glProgramUniform1iEXT (GLuint program, GLint location, GLint x);
+GL_APICALL void GL_APIENTRY glProgramUniform2iEXT (GLuint program, GLint location, GLint x, GLint y);
+GL_APICALL void GL_APIENTRY glProgramUniform3iEXT (GLuint program, GLint location, GLint x, GLint y, GLint z);
+GL_APICALL void GL_APIENTRY glProgramUniform4iEXT (GLuint program, GLint location, GLint x, GLint y, GLint z, GLint w);
+GL_APICALL void GL_APIENTRY glProgramUniform1fEXT (GLuint program, GLint location, GLfloat x);
+GL_APICALL void GL_APIENTRY glProgramUniform2fEXT (GLuint program, GLint location, GLfloat x, GLfloat y);
+GL_APICALL void GL_APIENTRY glProgramUniform3fEXT (GLuint program, GLint location, GLfloat x, GLfloat y, GLfloat z);
+GL_APICALL void GL_APIENTRY glProgramUniform4fEXT (GLuint program, GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+GL_APICALL void GL_APIENTRY glProgramUniform1ivEXT (GLuint program, GLint location, GLsizei count, const GLint *value);
+GL_APICALL void GL_APIENTRY glProgramUniform2ivEXT (GLuint program, GLint location, GLsizei count, const GLint *value);
+GL_APICALL void GL_APIENTRY glProgramUniform3ivEXT (GLuint program, GLint location, GLsizei count, const GLint *value);
+GL_APICALL void GL_APIENTRY glProgramUniform4ivEXT (GLuint program, GLint location, GLsizei count, const GLint *value);
+GL_APICALL void GL_APIENTRY glProgramUniform1fvEXT (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+GL_APICALL void GL_APIENTRY glProgramUniform2fvEXT (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+GL_APICALL void GL_APIENTRY glProgramUniform3fvEXT (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+GL_APICALL void GL_APIENTRY glProgramUniform4fvEXT (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+GL_APICALL void GL_APIENTRY glProgramUniformMatrix2fvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+GL_APICALL void GL_APIENTRY glProgramUniformMatrix3fvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+GL_APICALL void GL_APIENTRY glProgramUniformMatrix4fvEXT (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+GL_APICALL void GL_APIENTRY glValidateProgramPipelineEXT (GLuint pipeline);
+GL_APICALL void GL_APIENTRY glGetProgramPipelineInfoLogEXT (GLuint pipeline, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
+#endif
+typedef void (GL_APIENTRYP PFNGLUSEPROGRAMSTAGESEXTPROC) (GLuint pipeline, GLbitfield stages, GLuint program);
+typedef void (GL_APIENTRYP PFNGLACTIVESHADERPROGRAMEXTPROC) (GLuint pipeline, GLuint program);
+typedef GLuint (GL_APIENTRYP PFNGLCREATESHADERPROGRAMVEXTPROC) (GLenum type, GLsizei count, const GLchar **strings);
+typedef void (GL_APIENTRYP PFNGLBINDPROGRAMPIPELINEEXTPROC) (GLuint pipeline);
+typedef void (GL_APIENTRYP PFNGLDELETEPROGRAMPIPELINESEXTPROC) (GLsizei n, const GLuint *pipelines);
+typedef void (GL_APIENTRYP PFNGLGENPROGRAMPIPELINESEXTPROC) (GLsizei n, GLuint *pipelines);
+typedef GLboolean (GL_APIENTRYP PFNGLISPROGRAMPIPELINEEXTPROC) (GLuint pipeline);
+typedef void (GL_APIENTRYP PFNGLPROGRAMPARAMETERIEXTPROC) (GLuint program, GLenum pname, GLint value);
+typedef void (GL_APIENTRYP PFNGLGETPROGRAMPIPELINEIVEXTPROC) (GLuint pipeline, GLenum pname, GLint *params);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1IEXTPROC) (GLuint program, GLint location, GLint x);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2IEXTPROC) (GLuint program, GLint location, GLint x, GLint y);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3IEXTPROC) (GLuint program, GLint location, GLint x, GLint y, GLint z);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4IEXTPROC) (GLuint program, GLint location, GLint x, GLint y, GLint z, GLint w);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1FEXTPROC) (GLuint program, GLint location, GLfloat x);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2FEXTPROC) (GLuint program, GLint location, GLfloat x, GLfloat y);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3FEXTPROC) (GLuint program, GLint location, GLfloat x, GLfloat y, GLfloat z);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4FEXTPROC) (GLuint program, GLint location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1IVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2IVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3IVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4IVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLint *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM1FVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM2FVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM3FVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORM4FVEXTPROC) (GLuint program, GLint location, GLsizei count, const GLfloat *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORMMATRIX2FVEXTPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORMMATRIX3FVEXTPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+typedef void (GL_APIENTRYP PFNGLPROGRAMUNIFORMMATRIX4FVEXTPROC) (GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+typedef void (GL_APIENTRYP PFNGLVALIDATEPROGRAMPIPELINEEXTPROC) (GLuint pipeline);
+typedef void (GL_APIENTRYP PFNGLGETPROGRAMPIPELINEINFOLOGEXTPROC) (GLuint pipeline, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
+#endif
+
+/* GL_EXT_shader_framebuffer_fetch */
+#ifndef GL_EXT_shader_framebuffer_fetch
+#define GL_EXT_shader_framebuffer_fetch 1
+#endif
+
+/* GL_EXT_shader_texture_lod */
+#ifndef GL_EXT_shader_texture_lod
+#define GL_EXT_shader_texture_lod 1
+#endif
+
+/* GL_EXT_shadow_samplers */
+#ifndef GL_EXT_shadow_samplers
+#define GL_EXT_shadow_samplers 1
+#endif
+
+/* GL_EXT_sRGB */
+#ifndef GL_EXT_sRGB
+#define GL_EXT_sRGB 1
+#endif
+
+/* GL_EXT_texture_compression_dxt1 */
+#ifndef GL_EXT_texture_compression_dxt1
+#define GL_EXT_texture_compression_dxt1 1
+#endif
+
+/* GL_EXT_texture_filter_anisotropic */
+#ifndef GL_EXT_texture_filter_anisotropic
+#define GL_EXT_texture_filter_anisotropic 1
+#endif
+
+/* GL_EXT_texture_format_BGRA8888 */
+#ifndef GL_EXT_texture_format_BGRA8888
+#define GL_EXT_texture_format_BGRA8888 1
+#endif
+
+/* GL_EXT_texture_rg */
+#ifndef GL_EXT_texture_rg
+#define GL_EXT_texture_rg 1
+#endif
+
+/* GL_EXT_texture_storage */
+#ifndef GL_EXT_texture_storage
+#define GL_EXT_texture_storage 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glTexStorage1DEXT (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
+GL_APICALL void GL_APIENTRY glTexStorage2DEXT (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glTexStorage3DEXT (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
+GL_APICALL void GL_APIENTRY glTextureStorage1DEXT (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
+GL_APICALL void GL_APIENTRY glTextureStorage2DEXT (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
+GL_APICALL void GL_APIENTRY glTextureStorage3DEXT (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
+#endif
+typedef void (GL_APIENTRYP PFNGLTEXSTORAGE1DEXTPROC) (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
+typedef void (GL_APIENTRYP PFNGLTEXSTORAGE2DEXTPROC) (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLTEXSTORAGE3DEXTPROC) (GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
+typedef void (GL_APIENTRYP PFNGLTEXTURESTORAGE1DEXTPROC) (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width);
+typedef void (GL_APIENTRYP PFNGLTEXTURESTORAGE2DEXTPROC) (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLTEXTURESTORAGE3DEXTPROC) (GLuint texture, GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
+#endif
+
+/* GL_EXT_texture_type_2_10_10_10_REV */
+#ifndef GL_EXT_texture_type_2_10_10_10_REV
+#define GL_EXT_texture_type_2_10_10_10_REV 1
+#endif
+
+/* GL_EXT_unpack_subimage */
+#ifndef GL_EXT_unpack_subimage
+#define GL_EXT_unpack_subimage 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * DMP extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_DMP_shader_binary */
+#ifndef GL_DMP_shader_binary
+#define GL_DMP_shader_binary 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * FJ extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_FJ_shader_binary_GCCSO */
+#ifndef GL_FJ_shader_binary_GCCSO
+#define GL_FJ_shader_binary_GCCSO 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * IMG extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_IMG_program_binary */
+#ifndef GL_IMG_program_binary
+#define GL_IMG_program_binary 1
+#endif
+
+/* GL_IMG_read_format */
+#ifndef GL_IMG_read_format
+#define GL_IMG_read_format 1
+#endif
+
+/* GL_IMG_shader_binary */
+#ifndef GL_IMG_shader_binary
+#define GL_IMG_shader_binary 1
+#endif
+
+/* GL_IMG_texture_compression_pvrtc */
+#ifndef GL_IMG_texture_compression_pvrtc
+#define GL_IMG_texture_compression_pvrtc 1
+#endif
+
+/* GL_IMG_texture_compression_pvrtc2 */
+#ifndef GL_IMG_texture_compression_pvrtc2
+#define GL_IMG_texture_compression_pvrtc2 1
+#endif
+
+/* GL_IMG_multisampled_render_to_texture */
+#ifndef GL_IMG_multisampled_render_to_texture
+#define GL_IMG_multisampled_render_to_texture 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleIMG (GLenum, GLsizei, GLenum, GLsizei, GLsizei);
+GL_APICALL void GL_APIENTRY glFramebufferTexture2DMultisampleIMG (GLenum, GLenum, GLenum, GLuint, GLint, GLsizei);
+#endif
+typedef void (GL_APIENTRYP PFNGLRENDERBUFFERSTORAGEMULTISAMPLEIMGPROC) (GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+typedef void (GL_APIENTRYP PFNGLFRAMEBUFFERTEXTURE2DMULTISAMPLEIMGPROC) (GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLsizei samples);
+#endif
+
+/*------------------------------------------------------------------------*
+ * NV extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_NV_coverage_sample */
+#ifndef GL_NV_coverage_sample
+#define GL_NV_coverage_sample 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glCoverageMaskNV (GLboolean mask);
+GL_APICALL void GL_APIENTRY glCoverageOperationNV (GLenum operation);
+#endif
+typedef void (GL_APIENTRYP PFNGLCOVERAGEMASKNVPROC) (GLboolean mask);
+typedef void (GL_APIENTRYP PFNGLCOVERAGEOPERATIONNVPROC) (GLenum operation);
+#endif
+
+/* GL_NV_depth_nonlinear */
+#ifndef GL_NV_depth_nonlinear
+#define GL_NV_depth_nonlinear 1
+#endif
+
+/* GL_NV_draw_buffers */
+#ifndef GL_NV_draw_buffers
+#define GL_NV_draw_buffers 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDrawBuffersNV (GLsizei n, const GLenum *bufs);
+#endif
+typedef void (GL_APIENTRYP PFNGLDRAWBUFFERSNVPROC) (GLsizei n, const GLenum *bufs);
+#endif
+
+/* GL_NV_draw_instanced */
+#ifndef GL_NV_draw_instanced
+#define GL_NV_draw_instanced 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDrawArraysInstancedNV (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+GL_APICALL void GL_APIENTRY glDrawElementsInstancedNV (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei primcount);
+#endif
+typedef void (GL_APIENTRYP PFNDRAWARRAYSINSTANCEDNVPROC) (GLenum mode, GLint first, GLsizei count, GLsizei primcount);
+typedef void (GL_APIENTRYP PFNDRAWELEMENTSINSTANCEDNVPROC) (GLenum mode, GLsizei count, GLenum type, const GLvoid *indices, GLsizei primcount);
+#endif
+
+/* GL_NV_fbo_color_attachments */
+#ifndef GL_NV_fbo_color_attachments
+#define GL_NV_fbo_color_attachments 1
+#endif
+
+/* GL_NV_fence */
+#ifndef GL_NV_fence
+#define GL_NV_fence 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glDeleteFencesNV (GLsizei, const GLuint *);
+GL_APICALL void GL_APIENTRY glGenFencesNV (GLsizei, GLuint *);
+GL_APICALL GLboolean GL_APIENTRY glIsFenceNV (GLuint);
+GL_APICALL GLboolean GL_APIENTRY glTestFenceNV (GLuint);
+GL_APICALL void GL_APIENTRY glGetFenceivNV (GLuint, GLenum, GLint *);
+GL_APICALL void GL_APIENTRY glFinishFenceNV (GLuint);
+GL_APICALL void GL_APIENTRY glSetFenceNV (GLuint, GLenum);
+#endif
+typedef void (GL_APIENTRYP PFNGLDELETEFENCESNVPROC) (GLsizei n, const GLuint *fences);
+typedef void (GL_APIENTRYP PFNGLGENFENCESNVPROC) (GLsizei n, GLuint *fences);
+typedef GLboolean (GL_APIENTRYP PFNGLISFENCENVPROC) (GLuint fence);
+typedef GLboolean (GL_APIENTRYP PFNGLTESTFENCENVPROC) (GLuint fence);
+typedef void (GL_APIENTRYP PFNGLGETFENCEIVNVPROC) (GLuint fence, GLenum pname, GLint *params);
+typedef void (GL_APIENTRYP PFNGLFINISHFENCENVPROC) (GLuint fence);
+typedef void (GL_APIENTRYP PFNGLSETFENCENVPROC) (GLuint fence, GLenum condition);
+#endif
+
+/* GL_NV_framebuffer_blit */
+#ifndef GL_NV_framebuffer_blit
+#define GL_NV_framebuffer_blit 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glBlitFramebufferNV (int srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+#endif
+typedef void (GL_APIENTRYP PFNBLITFRAMEBUFFERNVPROC) (GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
+#endif
+
+/* GL_NV_framebuffer_multisample */
+#ifndef GL_NV_framebuffer_multisample
+#define GL_NV_framebuffer_multisample 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glRenderbufferStorageMultisampleNV ( GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+#endif
+typedef void (GL_APIENTRYP PFNRENDERBUFFERSTORAGEMULTISAMPLENVPROC) ( GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+#endif
+
+/* GL_NV_generate_mipmap_sRGB */
+#ifndef GL_NV_generate_mipmap_sRGB
+#define GL_NV_generate_mipmap_sRGB 1
+#endif
+
+/* GL_NV_instanced_arrays */
+#ifndef GL_NV_instanced_arrays
+#define GL_NV_instanced_arrays 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glVertexAttribDivisorNV (GLuint index, GLuint divisor);
+#endif
+typedef void (GL_APIENTRYP PFNVERTEXATTRIBDIVISORNVPROC) (GLuint index, GLuint divisor);
+#endif
+
+/* GL_NV_read_buffer */
+#ifndef GL_NV_read_buffer
+#define GL_NV_read_buffer 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glReadBufferNV (GLenum mode);
+#endif
+typedef void (GL_APIENTRYP PFNGLREADBUFFERNVPROC) (GLenum mode);
+#endif
+
+/* GL_NV_read_buffer_front */
+#ifndef GL_NV_read_buffer_front
+#define GL_NV_read_buffer_front 1
+#endif
+
+/* GL_NV_read_depth */
+#ifndef GL_NV_read_depth
+#define GL_NV_read_depth 1
+#endif
+
+/* GL_NV_read_depth_stencil */
+#ifndef GL_NV_read_depth_stencil
+#define GL_NV_read_depth_stencil 1
+#endif
+
+/* GL_NV_read_stencil */
+#ifndef GL_NV_read_stencil
+#define GL_NV_read_stencil 1
+#endif
+
+/* GL_NV_shadow_samplers_array */
+#ifndef GL_NV_shadow_samplers_array
+#define GL_NV_shadow_samplers_array 1
+#endif
+
+/* GL_NV_shadow_samplers_cube */
+#ifndef GL_NV_shadow_samplers_cube
+#define GL_NV_shadow_samplers_cube 1
+#endif
+
+/* GL_NV_sRGB_formats */
+#ifndef GL_NV_sRGB_formats
+#define GL_NV_sRGB_formats 1
+#endif
+
+/* GL_NV_texture_border_clamp */
+#ifndef GL_NV_texture_border_clamp
+#define GL_NV_texture_border_clamp 1
+#endif
+
+/* GL_NV_texture_compression_s3tc_update */
+#ifndef GL_NV_texture_compression_s3tc_update
+#define GL_NV_texture_compression_s3tc_update 1
+#endif
+
+/* GL_NV_texture_npot_2D_mipmap */
+#ifndef GL_NV_texture_npot_2D_mipmap
+#define GL_NV_texture_npot_2D_mipmap 1
+#endif
+
+/*------------------------------------------------------------------------*
+ * QCOM extension functions
+ *------------------------------------------------------------------------*/
+
+/* GL_QCOM_alpha_test */
+#ifndef GL_QCOM_alpha_test
+#define GL_QCOM_alpha_test 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glAlphaFuncQCOM (GLenum func, GLclampf ref);
+#endif
+typedef void (GL_APIENTRYP PFNGLALPHAFUNCQCOMPROC) (GLenum func, GLclampf ref);
+#endif
+
+/* GL_QCOM_binning_control */
+#ifndef GL_QCOM_binning_control
+#define GL_QCOM_binning_control 1
+#endif
+
+/* GL_QCOM_driver_control */
+#ifndef GL_QCOM_driver_control
+#define GL_QCOM_driver_control 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glGetDriverControlsQCOM (GLint *num, GLsizei size, GLuint *driverControls);
+GL_APICALL void GL_APIENTRY glGetDriverControlStringQCOM (GLuint driverControl, GLsizei bufSize, GLsizei *length, GLchar *driverControlString);
+GL_APICALL void GL_APIENTRY glEnableDriverControlQCOM (GLuint driverControl);
+GL_APICALL void GL_APIENTRY glDisableDriverControlQCOM (GLuint driverControl);
+#endif
+typedef void (GL_APIENTRYP PFNGLGETDRIVERCONTROLSQCOMPROC) (GLint *num, GLsizei size, GLuint *driverControls);
+typedef void (GL_APIENTRYP PFNGLGETDRIVERCONTROLSTRINGQCOMPROC) (GLuint driverControl, GLsizei bufSize, GLsizei *length, GLchar *driverControlString);
+typedef void (GL_APIENTRYP PFNGLENABLEDRIVERCONTROLQCOMPROC) (GLuint driverControl);
+typedef void (GL_APIENTRYP PFNGLDISABLEDRIVERCONTROLQCOMPROC) (GLuint driverControl);
+#endif
+
+/* GL_QCOM_extended_get */
+#ifndef GL_QCOM_extended_get
+#define GL_QCOM_extended_get 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glExtGetTexturesQCOM (GLuint *textures, GLint maxTextures, GLint *numTextures);
+GL_APICALL void GL_APIENTRY glExtGetBuffersQCOM (GLuint *buffers, GLint maxBuffers, GLint *numBuffers);
+GL_APICALL void GL_APIENTRY glExtGetRenderbuffersQCOM (GLuint *renderbuffers, GLint maxRenderbuffers, GLint *numRenderbuffers);
+GL_APICALL void GL_APIENTRY glExtGetFramebuffersQCOM (GLuint *framebuffers, GLint maxFramebuffers, GLint *numFramebuffers);
+GL_APICALL void GL_APIENTRY glExtGetTexLevelParameterivQCOM (GLuint texture, GLenum face, GLint level, GLenum pname, GLint *params);
+GL_APICALL void GL_APIENTRY glExtTexObjectStateOverrideiQCOM (GLenum target, GLenum pname, GLint param);
+GL_APICALL void GL_APIENTRY glExtGetTexSubImageQCOM (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, GLvoid *texels);
+GL_APICALL void GL_APIENTRY glExtGetBufferPointervQCOM (GLenum target, GLvoid **params);
+#endif
+typedef void (GL_APIENTRYP PFNGLEXTGETTEXTURESQCOMPROC) (GLuint *textures, GLint maxTextures, GLint *numTextures);
+typedef void (GL_APIENTRYP PFNGLEXTGETBUFFERSQCOMPROC) (GLuint *buffers, GLint maxBuffers, GLint *numBuffers);
+typedef void (GL_APIENTRYP PFNGLEXTGETRENDERBUFFERSQCOMPROC) (GLuint *renderbuffers, GLint maxRenderbuffers, GLint *numRenderbuffers);
+typedef void (GL_APIENTRYP PFNGLEXTGETFRAMEBUFFERSQCOMPROC) (GLuint *framebuffers, GLint maxFramebuffers, GLint *numFramebuffers);
+typedef void (GL_APIENTRYP PFNGLEXTGETTEXLEVELPARAMETERIVQCOMPROC) (GLuint texture, GLenum face, GLint level, GLenum pname, GLint *params);
+typedef void (GL_APIENTRYP PFNGLEXTTEXOBJECTSTATEOVERRIDEIQCOMPROC) (GLenum target, GLenum pname, GLint param);
+typedef void (GL_APIENTRYP PFNGLEXTGETTEXSUBIMAGEQCOMPROC) (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, GLvoid *texels);
+typedef void (GL_APIENTRYP PFNGLEXTGETBUFFERPOINTERVQCOMPROC) (GLenum target, GLvoid **params);
+#endif
+
+/* GL_QCOM_extended_get2 */
+#ifndef GL_QCOM_extended_get2
+#define GL_QCOM_extended_get2 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glExtGetShadersQCOM (GLuint *shaders, GLint maxShaders, GLint *numShaders);
+GL_APICALL void GL_APIENTRY glExtGetProgramsQCOM (GLuint *programs, GLint maxPrograms, GLint *numPrograms);
+GL_APICALL GLboolean GL_APIENTRY glExtIsProgramBinaryQCOM (GLuint program);
+GL_APICALL void GL_APIENTRY glExtGetProgramBinarySourceQCOM (GLuint program, GLenum shadertype, GLchar *source, GLint *length);
+#endif
+typedef void (GL_APIENTRYP PFNGLEXTGETSHADERSQCOMPROC) (GLuint *shaders, GLint maxShaders, GLint *numShaders);
+typedef void (GL_APIENTRYP PFNGLEXTGETPROGRAMSQCOMPROC) (GLuint *programs, GLint maxPrograms, GLint *numPrograms);
+typedef GLboolean (GL_APIENTRYP PFNGLEXTISPROGRAMBINARYQCOMPROC) (GLuint program);
+typedef void (GL_APIENTRYP PFNGLEXTGETPROGRAMBINARYSOURCEQCOMPROC) (GLuint program, GLenum shadertype, GLchar *source, GLint *length);
+#endif
+
+/* GL_QCOM_perfmon_global_mode */
+#ifndef GL_QCOM_perfmon_global_mode
+#define GL_QCOM_perfmon_global_mode 1
+#endif
+
+/* GL_QCOM_writeonly_rendering */
+#ifndef GL_QCOM_writeonly_rendering
+#define GL_QCOM_writeonly_rendering 1
+#endif
+
+/* GL_QCOM_tiled_rendering */
+#ifndef GL_QCOM_tiled_rendering
+#define GL_QCOM_tiled_rendering 1
+#ifdef GL_GLEXT_PROTOTYPES
+GL_APICALL void GL_APIENTRY glStartTilingQCOM (GLuint x, GLuint y, GLuint width, GLuint height, GLbitfield preserveMask);
+GL_APICALL void GL_APIENTRY glEndTilingQCOM (GLbitfield preserveMask);
+#endif
+typedef void (GL_APIENTRYP PFNGLSTARTTILINGQCOMPROC) (GLuint x, GLuint y, GLuint width, GLuint height, GLbitfield preserveMask);
+typedef void (GL_APIENTRYP PFNGLENDTILINGQCOMPROC) (GLbitfield preserveMask);
+#endif
+
+/*------------------------------------------------------------------------*
+ * VIV extension tokens
+ *------------------------------------------------------------------------*/
+
+/* GL_VIV_shader_binary */
+#ifndef GL_VIV_shader_binary
+#define GL_VIV_shader_binary 1
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __gl2ext_h_ */
\ No newline at end of file
diff --git a/dev/disc_collection.py b/dev/disc_collection.py
new file mode 100644
index 0000000..5cc6e09
--- /dev/null
+++ b/dev/disc_collection.py
@@ -0,0 +1,113 @@
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+import numpy as np
+
+VERT_SHADER = """
+attribute vec3 a_position;
+attribute vec3 a_color;
+attribute float a_size;
+
+uniform float u_line_width;
+
+uniform vec2 u_pan;
+uniform vec2 u_zoom;
+
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_radius;
+varying float v_linewidth;
+varying float v_antialias;
+
+void main (void) {
+ v_radius = a_size;
+ v_linewidth = u_line_width;
+ v_antialias = 1.0;
+ v_fg_color = vec4(0.0,0.0,0.0,1.0);
+ v_bg_color = vec4(a_color, 1.0);
+
+ gl_Position = vec4(u_zoom * (a_position.xy + u_pan), a_position.z, 1.0);
+ gl_PointSize = 2.0*(v_radius + v_linewidth + 1.5*v_antialias);
+}
+"""
+
+FRAG_SHADER = """
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_radius;
+varying float v_linewidth;
+varying float v_antialias;
+void main()
+{
+ float size = 2*(v_radius + v_linewidth + 1.5*v_antialias);
+ float t = v_linewidth/2.0-v_antialias;
+ float r = length((gl_PointCoord.xy - vec2(0.5,0.5))*size);
+ float d = abs(r - v_radius) - t;
+ if( d < 0.0 )
+ gl_FragColor = v_fg_color;
+ else
+ {
+ float alpha = d/v_antialias;
+ alpha = exp(-alpha*alpha);
+ if (r > v_radius)
+ gl_FragColor = vec4(v_fg_color.rgb, alpha*v_fg_color.a);
+ else
+ gl_FragColor = mix(v_bg_color, v_fg_color, alpha);
+ }
+}
+"""
+
+class DiscCollection(object):
+ def __init__(self):
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+
+ self._vbo_position = gloo.VertexBuffer('2f4')
+ self._vbo_color = gloo.VertexBuffer('3f4')
+ self._vbo_size = gloo.VertexBuffer('f4')
+
+ self.program['a_position'] = self._vbo_position
+ self.program['a_color'] = self._vbo_color
+ self.program['a_size'] = self._vbo_size
+ self.program['u_line_width'] = 1.0
+ self.program['u_zoom'] = (1.0, 1.0)
+ self.program['u_pan'] = (0., 0.)
+
+ @property
+ def line_width(self):
+ return
+
+ @line_width.setter
+ def line_width(self, value):
+ self.program['u_line_width'] = value
+
+
+
+ @property
+ def position(self):
+ return
+ @position.setter
+ def position(self, value):
+ self._vbo_position.set_data(value)
+
+
+
+ @property
+ def color(self):
+ return
+ @color.setter
+ def color(self, value):
+ self._vbo_color.set_data(value)
+
+
+
+ @property
+ def size(self):
+ return
+ @size.setter
+ def size(self, value):
+ self._vbo_size.set_data(value)
+
+
+
+ def draw(self):
+ self.program.draw(gl.GL_POINTS)
diff --git a/dev/visual_experiments.py b/dev/visual_experiments.py
new file mode 100644
index 0000000..65eb906
--- /dev/null
+++ b/dev/visual_experiments.py
@@ -0,0 +1,33 @@
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+from disc_collection import DiscCollection
+import numpy as np
+
+
+class Canvas(app.Canvas):
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+
+ n = 10000
+ self.discs = DiscCollection()
+ self.discs.line_width = 2.
+ self.discs.position = 0.25 * np.random.randn(n, 2).astype(np.float32)
+ self.discs.color = np.random.uniform(0,1,(n,3)).astype(np.float32)
+ self.discs.size = np.random.uniform(2,12,(n,1)).astype(np.float32)
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ self.discs.draw()
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/doc/.requirements b/doc/.requirements
new file mode 100644
index 0000000..59a31d3
--- /dev/null
+++ b/doc/.requirements
@@ -0,0 +1,3 @@
+PyOpenGL>=3.0.2
+numpy>=1.6
+
diff --git a/doc/Makefile b/doc/Makefile
new file mode 100644
index 0000000..b79ef5c
--- /dev/null
+++ b/doc/Makefile
@@ -0,0 +1,160 @@
+# Makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line.
+SPHINXOPTS =
+SPHINXBUILD = sphinx-build
+PAPER =
+BUILDDIR = _build
+
+# Internal variables.
+PAPEROPT_a4 = -D latex_paper_size=a4
+PAPEROPT_letter = -D latex_paper_size=letter
+ALLSPHINXOPTS = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+# the i18n builder cannot share the environment and doctrees with the others
+I18NSPHINXOPTS = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
+
+.PHONY: help clean html dirhtml singlehtml pickle json htmlhelp qthelp devhelp epub latex latexpdf text man changes linkcheck doctest gettext
+
+help:
+ @echo "Please use \`make <target>' where <target> is one of"
+ @echo " html to make standalone HTML files"
+ @echo " dirhtml to make HTML files named index.html in directories"
+ @echo " singlehtml to make a single large HTML file"
+ @echo " pickle to make pickle files"
+ @echo " json to make JSON files"
+ @echo " htmlhelp to make HTML files and a HTML help project"
+ @echo " qthelp to make HTML files and a qthelp project"
+ @echo " devhelp to make HTML files and a Devhelp project"
+ @echo " epub to make an epub"
+ @echo " latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
+ @echo " latexpdf to make LaTeX files and run them through pdflatex"
+ @echo " text to make text files"
+ @echo " man to make manual pages"
+ @echo " texinfo to make Texinfo files"
+ @echo " info to make Texinfo files and run them through makeinfo"
+ @echo " gettext to make PO message catalogs"
+ @echo " changes to make an overview of all changed/added/deprecated items"
+ @echo " linkcheck to check all external links for integrity"
+ @echo " doctest to run all doctests embedded in the documentation (if enabled)"
+
+clean:
+ -rm -rf $(BUILDDIR)/*
+
+html:
+ $(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
+ @echo
+ @echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
+
+dirhtml:
+ $(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
+ @echo
+ @echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
+
+singlehtml:
+ $(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
+ @echo
+ @echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
+
+pickle:
+ $(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
+ @echo
+ @echo "Build finished; now you can process the pickle files."
+
+json:
+ $(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
+ @echo
+ @echo "Build finished; now you can process the JSON files."
+
+htmlhelp:
+ $(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
+ @echo
+ @echo "Build finished; now you can run HTML Help Workshop with the" \
+ ".hhp project file in $(BUILDDIR)/htmlhelp."
+
+qthelp:
+ $(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
+ @echo
+ @echo "Build finished; now you can run "qcollectiongenerator" with the" \
+ ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
+ @echo "# qcollectiongenerator $(BUILDDIR)/qthelp/vispy.qhcp"
+ @echo "To view the help file:"
+ @echo "# assistant -collectionFile $(BUILDDIR)/qthelp/vispy.qhc"
+
+devhelp:
+ $(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
+ @echo
+ @echo "Build finished."
+ @echo "To view the help file:"
+ @echo "# mkdir -p $$HOME/.local/share/devhelp/vispy"
+ @echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/vispy"
+ @echo "# devhelp"
+
+epub:
+ $(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
+ @echo
+ @echo "Build finished. The epub file is in $(BUILDDIR)/epub."
+
+latex:
+ $(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+ @echo
+ @echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
+ @echo "Run \`make' in that directory to run these through (pdf)latex" \
+ "(use \`make latexpdf' here to do that automatically)."
+
+latexpdf:
+ $(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
+ @echo "Running LaTeX files through pdflatex..."
+ $(MAKE) -C $(BUILDDIR)/latex all-pdf
+ @echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
+
+text:
+ $(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
+ @echo
+ @echo "Build finished. The text files are in $(BUILDDIR)/text."
+
+man:
+ $(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
+ @echo
+ @echo "Build finished. The manual pages are in $(BUILDDIR)/man."
+
+texinfo:
+ $(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+ @echo
+ @echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
+ @echo "Run \`make' in that directory to run these through makeinfo" \
+ "(use \`make info' here to do that automatically)."
+
+info:
+ $(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
+ @echo "Running Texinfo files through makeinfo..."
+ make -C $(BUILDDIR)/texinfo info
+ @echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
+
+gettext:
+ $(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
+ @echo
+ @echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
+
+changes:
+ $(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
+ @echo
+ @echo "The overview file is in $(BUILDDIR)/changes."
+
+linkcheck:
+ $(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
+ @echo
+ @echo "Link check complete; look for any errors in the above output " \
+ "or in $(BUILDDIR)/linkcheck/output.txt."
+
+doctest:
+ $(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
+ @echo "Testing of doctests in the sources finished, look at the " \
+ "results in $(BUILDDIR)/doctest/output.txt."
+
+showinchrome:
+ google-chrome _build/html/index.html
+
+showinff:
+ firefox _build/html/index.html
+
diff --git a/doc/_templates/localtoc.html b/doc/_templates/localtoc.html
new file mode 100644
index 0000000..c7e0f04
--- /dev/null
+++ b/doc/_templates/localtoc.html
@@ -0,0 +1,10 @@
+{% if pagename != 'index' %}
+
+ {%- if display_toc %}
+ <h4 class="sidebar-box-heading">Contents</h4>
+ <div class="well sidebar-box toc">
+ {{ toc|replace('<ul>', '<ul class="nav nav-list">') }}
+ </div>
+ {%- endif %}
+
+{% endif %}
\ No newline at end of file
diff --git a/doc/_templates/navbar.html b/doc/_templates/navbar.html
new file mode 100644
index 0000000..78c883b
--- /dev/null
+++ b/doc/_templates/navbar.html
@@ -0,0 +1,4 @@
+<li><a href="http://vispy.org">Home</a></li>
+<li><a href="http://vispy.org/gallery.html">Gallery</a></li>
+<li><a href="http://api.vispy.org">Documentation</a></li>
+<li><a href="https://github.com/vispy/vispy">Source</a></li>
diff --git a/doc/_templates/navigation.html b/doc/_templates/navigation.html
new file mode 100644
index 0000000..127bdd2
--- /dev/null
+++ b/doc/_templates/navigation.html
@@ -0,0 +1,12 @@
+<h4 class="sidebar-box-heading">{{ _('Navigation') }}</h4>
+<div class="well sidebar-box">
+ <ul class="nav nav-list">
+ <li><a href="{{ pathto(master_doc) }}">Documentation Home</a></li>
+ {% if prev %}
+ <li>Previous: <a href="{{ prev.link|e }}" title="{{ _('previous chapter') }}">{{ prev.title }}</a></li>
+ {% endif %}
+ {% if next %}
+ <li>Next: <a href="{{ next.link|e }}" title="{{ _('next chapter') }}">{{ next.title }}</a></li>
+ {% endif %}
+ </ul>
+</div>
diff --git a/doc/_templates/versions.html b/doc/_templates/versions.html
new file mode 100644
index 0000000..ed6d9f7
--- /dev/null
+++ b/doc/_templates/versions.html
@@ -0,0 +1,9 @@
+<h4 class="sidebar-box-heading">{{ _('Versions') }}</h4>
+<div class="well sidebar-box">
+ <ul class="nav nav-list">
+ <script src="{{ pathto('_static/', 1) }}js/docversions.js"></script>
+ <script type="text/javascript">
+ insert_version_links();
+ </script>
+ </ul>
+</div>
\ No newline at end of file
diff --git a/doc/app.rst b/doc/app.rst
new file mode 100644
index 0000000..af89ab6
--- /dev/null
+++ b/doc/app.rst
@@ -0,0 +1,32 @@
+==============
+The app module
+==============
+
+.. automodule:: vispy.app
+
+----
+
+.. autofunction:: vispy.app.use
+
+.. autofunction:: vispy.app.create
+
+.. autofunction:: vispy.app.run
+
+.. autofunction:: vispy.app.quit
+
+.. autofunction:: vispy.app.process_events
+
+----
+
+.. autoclass:: vispy.app.Application
+ :members:
+
+----
+
+.. autoclass:: vispy.app.Canvas
+ :members:
+
+----
+
+.. autoclass:: vispy.app.Timer
+ :members:
diff --git a/doc/architecture.svg b/doc/architecture.svg
new file mode 100644
index 0000000..53258f8
--- /dev/null
+++ b/doc/architecture.svg
@@ -0,0 +1,689 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+ xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+ width="744.09448819"
+ height="1052.3622047"
+ id="svg2"
+ version="1.1"
+ inkscape:version="0.48.3.1 r9886"
+ sodipodi:docname="architecture.svg">
+ <defs
+ id="defs4" />
+ <sodipodi:namedview
+ id="base"
+ pagecolor="#ffffff"
+ bordercolor="#666666"
+ borderopacity="1.0"
+ inkscape:pageopacity="0.0"
+ inkscape:pageshadow="2"
+ inkscape:zoom="1.979899"
+ inkscape:cx="427.61449"
+ inkscape:cy="861.96923"
+ inkscape:document-units="px"
+ inkscape:current-layer="layer1"
+ showgrid="false"
+ inkscape:showpageshadow="true"
+ showborder="true"
+ inkscape:connector-spacing="6"
+ inkscape:window-width="1920"
+ inkscape:window-height="1132"
+ inkscape:window-x="-3"
+ inkscape:window-y="-3"
+ inkscape:window-maximized="1" />
+ <metadata
+ id="metadata7">
+ <rdf:RDF>
+ <cc:Work
+ rdf:about="">
+ <dc:format>image/svg+xml</dc:format>
+ <dc:type
+ rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+ <dc:title />
+ </cc:Work>
+ </rdf:RDF>
+ </metadata>
+ <g
+ inkscape:label="Layer 1"
+ inkscape:groupmode="layer"
+ id="layer1">
+ <rect
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+ width="386.21841"
+ height="207.19621"
+ x="212.30661"
+ y="178.5072"
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+ <path
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+ id="g10213"
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+ xml:space="preserve"
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+ id="text10222"
+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ id="tspan10224"
+ x="341.19055"
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+ </g>
+ <g
+ id="g10226"
+ transform="matrix(0.88592237,0,0,0.88592237,191.94978,71.798389)"
+ inkscape:connector-avoid="true">
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+ xml:space="preserve"><tspan
+ y="147.51627"
+ x="341.19055"
+ id="tspan10232"
+ sodipodi:role="line">Shaders</tspan></text>
+ <text
+ xml:space="preserve"
+ style="font-size:12px;font-style:normal;font-weight:normal;text-align:start;line-height:125%;letter-spacing:0px;word-spacing:0px;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
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+ sodipodi:role="line"
+ id="tspan4072"
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+ sodipodi:role="line"
+ x="581.21094"
+ y="407.73257"
+ id="tspan4074">clipping boxes, etc. </tspan><tspan
+ sodipodi:role="line"
+ x="581.21094"
+ y="422.73257"
+ id="tspan4076" /><tspan
+ sodipodi:role="line"
+ x="581.21094"
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+ id="tspan4078">Shaders will have a standard set of hooks allowing</tspan><tspan
+ sodipodi:role="line"
+ x="581.21094"
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+ id="tspan4080">them to be recombined</tspan></text>
+ </g>
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+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ id="tspan10240"
+ x="339.40591"
+ y="137.08148">GL Visuals</tspan></text>
+ </g>
+ <path
+ style="fill:none;stroke:#000000;stroke-width:1.74317658;stroke-linecap:square;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none"
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diff --git a/doc/conf.py b/doc/conf.py
new file mode 100644
index 0000000..ab0fae1
--- /dev/null
+++ b/doc/conf.py
@@ -0,0 +1,282 @@
+# -*- coding: utf-8 -*-
+#
+# vispy documentation build configuration file, created by
+# sphinx-quickstart on Sat May 4 16:52:02 2013.
+#
+# This file is execfile()d with the current directory set to its containing dir.
+#
+# Note that not all possible configuration values are present in this
+# autogenerated file.
+#
+# All configuration values have a default; values that are commented out
+# serve to show the default.
+
+import sys, os
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+sys.path.insert(0, os.path.abspath('..'))
+#sys.path.insert(0, os.path.abspath('.'))
+curpath = os.path.dirname(__file__)
+sys.path.append(os.path.abspath('ext'))
+
+# -- General configuration -----------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#needs_sphinx = '1.0'
+
+# Add any Sphinx extension module names here, as strings. They can be extensions
+# coming with Sphinx (named 'sphinx.ext.*') or your custom ones.
+extensions = [ 'sphinx.ext.autodoc', 'sphinx.ext.pngmath',
+ 'sphinx.ext.autosummary', #'plot2rst',
+ 'sphinx.ext.intersphinx',
+ 'numpydoc',
+ 'vispy_ext', ]#'scriptnamemangler',]
+
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+
+# The suffix of source filenames.
+source_suffix = '.rst'
+
+# The encoding of source files.
+#source_encoding = 'utf-8-sig'
+
+# The master toctree document.
+master_doc = 'index'
+
+# General information about the project.
+project = u'vispy'
+copyright = u'2013, vispy contributers'
+
+# The version info for the project you're documenting, acts as replacement for
+# |version| and |release|, also used in various other places throughout the
+# built documents.
+#
+import vispy
+# The short X.Y version.
+version = vispy.__version__[:3]
+# The full version, including alpha/beta/rc tags.
+release = vispy.__version__
+
+
+# -- General configuration -----------------------------------------------------
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#language = None
+
+# There are two options for replacing |today|: either, you set today to some
+# non-false value, then it is used:
+#today = ''
+# Else, today_fmt is used as the format for a strftime call.
+#today_fmt = '%B %d, %Y'
+
+# List of documents that shouldn't be included in the build.
+#unused_docs = []
+
+# List of directories, relative to source directory, that shouldn't be searched
+# for source files.
+exclude_trees = []
+
+# The reST default role (used for this markup: `text`) to use for all documents.
+#default_role = None
+
+# If true, '()' will be appended to :func: etc. cross-reference text.
+#add_function_parentheses = True
+
+# If true, the current module name will be prepended to all description
+# unit titles (such as .. function::).
+#add_module_names = True
+
+# If true, sectionauthor and moduleauthor directives will be shown in the
+# output. They are ignored by default.
+#show_authors = False
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = 'sphinx'
+
+# A list of ignored prefixes for module index sorting.
+#modindex_common_prefix = []
+
+
+# -- Options for HTML output ---------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages. Major themes that come with
+# Sphinx are currently 'default' and 'sphinxdoc'.
+html_theme = 'scikit-image'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further. For a list of options available for each theme, see the
+# documentation.
+#html_theme_options = {}
+
+# Add any paths that contain custom themes here, relative to this directory.
+html_theme_path = ['themes']
+
+# The name for this set of Sphinx documents. If None, it defaults to
+# "<project> v<release> documentation".
+html_title = 'vispy v%s docs' % version
+
+# A shorter title for the navigation bar. Default is the same as html_title.
+#html_short_title = None
+
+# The name of an image file (within the static path) to use as favicon of the
+# docs. This file should be a Windows icon file (.ico) being 16x16 or 32x32
+# pixels large.
+#html_favicon = None
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+html_static_path = ['_static']
+
+# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
+# using the given strftime format.
+#html_last_updated_fmt = '%b %d, %Y'
+
+# If true, SmartyPants will be used to convert quotes and dashes to
+# typographically correct entities.
+#html_use_smartypants = True
+
+# Custom sidebar templates, maps document names to template names.
+html_sidebars = {
+ '**': ['navigation.html',
+ 'localtoc.html',
+ 'versions.html'],
+}
+
+# Additional templates that should be rendered to pages, maps page names to
+# template names.
+# html_additional_pages = {}
+
+# If false, no module index is generated.
+#html_use_modindex = True
+
+# If false, no index is generated.
+#html_use_index = True
+
+# If true, the index is split into individual pages for each letter.
+#html_split_index = False
+
+# If true, links to the reST sources are added to the pages.
+#html_show_sourcelink = True
+
+# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
+#html_show_sphinx = True
+
+# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
+#html_show_copyright = True
+
+# If true, an OpenSearch description file will be output, and all pages will
+# contain a <link> tag referring to it. The value of this option must be the
+# base URL from which the finished HTML is served.
+#html_use_opensearch = ''
+
+# If nonempty, this is the file name suffix for HTML files (e.g. ".xhtml").
+#html_file_suffix = ''
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'vispydoc'
+
+
+# -- Options for LaTeX output --------------------------------------------------
+
+# The paper size ('letter' or 'a4').
+#latex_paper_size = 'letter'
+
+# The font size ('10pt', '11pt' or '12pt').
+latex_font_size = '10pt'
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title, author, documentclass [howto/manual]).
+latex_documents = [
+ ('contents', 'vispy.tex', u'The visoy Documentation',
+ u'vispy development team', 'manual'),
+]
+
+# The name of an image file (relative to this directory) to place at the top of
+# the title page.
+#latex_logo = None
+
+# For "manual" documents, if this is true, then toplevel headings are parts,
+# not chapters.
+#latex_use_parts = False
+
+# Additional stuff for the LaTeX preamble.
+latex_preamble = r'''
+\usepackage{enumitem}
+\setlistdepth{100}
+
+\usepackage{amsmath}
+\DeclareUnicodeCharacter{00A0}{\nobreakspace}
+
+% In the parameters section, place a newline after the Parameters header
+\usepackage{expdlist}
+\let\latexdescription=\description
+\def\description{\latexdescription{}{} \breaklabel}
+
+% Make Examples/etc section headers smaller and more compact
+\makeatletter
+\titleformat{\paragraph}{\normalsize\py at HeaderFamily}%
+{\py at TitleColor}{0em}{\py at TitleColor}{\py at NormalColor}
+\titlespacing*{\paragraph}{0pt}{1ex}{0pt}
+\makeatother
+
+'''
+
+# Documents to append as an appendix to all manuals.
+#latex_appendices = []
+
+# If false, no module index is generated.
+latex_use_modindex = False
+
+# -----------------------------------------------------------------------------
+# Numpy extensions
+# -----------------------------------------------------------------------------
+numpydoc_show_class_members = False
+
+# -----------------------------------------------------------------------------
+# Plots
+# -----------------------------------------------------------------------------
+plot_basedir = os.path.join(curpath, "plots")
+plot_pre_code = """
+import numpy as np
+import matplotlib.pyplot as plt
+np.random.seed(0)
+
+import matplotlib
+matplotlib.rcParams.update({
+'font.size': 14,
+'axes.titlesize': 12,
+'axes.labelsize': 10,
+'xtick.labelsize': 8,
+'ytick.labelsize': 8,
+'legend.fontsize': 10,
+'figure.subplot.bottom': 0.2,
+'figure.subplot.left': 0.2,
+'figure.subplot.right': 0.9,
+'figure.subplot.top': 0.85,
+'figure.subplot.wspace': 0.4,
+'text.usetex': False,
+})
+
+"""
+plot_include_source = True
+plot_formats = [('png', 100), ('pdf', 100)]
+
+plot2rst_index_name = 'README'
+plot2rst_rcparams = {'image.cmap' : 'gray',
+ 'image.interpolation' : 'none'}
+
+# -----------------------------------------------------------------------------
+# intersphinx
+# -----------------------------------------------------------------------------
+_python_doc_base = 'http://docs.python.org/2.7'
+intersphinx_mapping = {
+ _python_doc_base: None,
+ 'http://docs.scipy.org/doc/numpy': None,
+ 'http://docs.scipy.org/doc/scipy/reference': None,
+ 'http://vispy.org/stable': None
+}
diff --git a/doc/event.rst b/doc/event.rst
new file mode 100644
index 0000000..e9c1997
--- /dev/null
+++ b/doc/event.rst
@@ -0,0 +1,36 @@
+================
+The event module
+================
+
+.. automodule:: vispy.event
+
+----
+
+.. autoclass:: vispy.event.Event
+ :members:
+
+.. autoclass:: vispy.app.canvas.MouseEvent
+ :members:
+
+.. autoclass:: vispy.app.canvas.KeyEvent
+ :members:
+
+.. autoclass:: vispy.app.canvas.ResizeEvent
+ :members:
+
+.. autoclass:: vispy.app.canvas.PaintEvent
+ :members:
+
+
+----
+
+.. autoclass:: vispy.event.EventEmitter
+ :members:
+
+ .. automethod:: vispy.event.EventEmitter.__call__
+
+----
+
+.. autoclass:: vispy.event.EmitterGroup
+ :members:
+
diff --git a/doc/ext/docscrape.py b/doc/ext/docscrape.py
new file mode 100644
index 0000000..92b17a4
--- /dev/null
+++ b/doc/ext/docscrape.py
@@ -0,0 +1,502 @@
+"""Extract reference documentation from the NumPy source tree.
+
+"""
+
+import inspect
+import textwrap
+import re
+import pydoc
+try:
+ from StringIO import StringIO
+except ImportError:
+ from io import StringIO
+from warnings import warn
+
+
+class Reader(object):
+ """A line-based string reader.
+
+ """
+ def __init__(self, data):
+ """
+ Parameters
+ ----------
+ data : str
+ String with lines separated by '\n'.
+
+ """
+ if isinstance(data,list):
+ self._str = data
+ else:
+ self._str = data.split('\n') # store string as list of lines
+
+ self.reset()
+
+ def __getitem__(self, n):
+ return self._str[n]
+
+ def reset(self):
+ self._l = 0 # current line nr
+
+ def read(self):
+ if not self.eof():
+ out = self[self._l]
+ self._l += 1
+ return out
+ else:
+ return ''
+
+ def seek_next_non_empty_line(self):
+ for l in self[self._l:]:
+ if l.strip():
+ break
+ else:
+ self._l += 1
+
+ def eof(self):
+ return self._l >= len(self._str)
+
+ def read_to_condition(self, condition_func):
+ start = self._l
+ for line in self[start:]:
+ if condition_func(line):
+ return self[start:self._l]
+ self._l += 1
+ if self.eof():
+ return self[start:self._l+1]
+ return []
+
+ def read_to_next_empty_line(self):
+ self.seek_next_non_empty_line()
+ def is_empty(line):
+ return not line.strip()
+ return self.read_to_condition(is_empty)
+
+ def read_to_next_unindented_line(self):
+ def is_unindented(line):
+ return (line.strip() and (len(line.lstrip()) == len(line)))
+ return self.read_to_condition(is_unindented)
+
+ def peek(self,n=0):
+ if self._l + n < len(self._str):
+ return self[self._l + n]
+ else:
+ return ''
+
+ def is_empty(self):
+ return not ''.join(self._str).strip()
+
+
+class NumpyDocString(object):
+ def __init__(self, docstring, config={}):
+ docstring = textwrap.dedent(docstring).split('\n')
+
+ self._doc = Reader(docstring)
+ self._parsed_data = {
+ 'Signature': '',
+ 'Summary': [''],
+ 'Extended Summary': [],
+ 'Parameters': [],
+ 'Returns': [],
+ 'Raises': [],
+ 'Warns': [],
+ 'Other Parameters': [],
+ 'Attributes': [],
+ 'Methods': [],
+ 'See Also': [],
+ 'Notes': [],
+ 'Warnings': [],
+ 'References': '',
+ 'Examples': '',
+ 'index': {}
+ }
+
+ self._parse()
+
+ def __getitem__(self,key):
+ return self._parsed_data[key]
+
+ def __setitem__(self,key,val):
+ if not key in self._parsed_data:
+ warn("Unknown section %s" % key)
+ else:
+ self._parsed_data[key] = val
+
+ def _is_at_section(self):
+ self._doc.seek_next_non_empty_line()
+
+ if self._doc.eof():
+ return False
+
+ l1 = self._doc.peek().strip() # e.g. Parameters
+
+ if l1.startswith('.. index::'):
+ return True
+
+ l2 = self._doc.peek(1).strip() # ---------- or ==========
+ return l2.startswith('-'*len(l1)) or l2.startswith('='*len(l1))
+
+ def _strip(self,doc):
+ i = 0
+ j = 0
+ for i,line in enumerate(doc):
+ if line.strip(): break
+
+ for j,line in enumerate(doc[::-1]):
+ if line.strip(): break
+
+ return doc[i:len(doc)-j]
+
+ def _read_to_next_section(self):
+ section = self._doc.read_to_next_empty_line()
+
+ while not self._is_at_section() and not self._doc.eof():
+ if not self._doc.peek(-1).strip(): # previous line was empty
+ section += ['']
+
+ section += self._doc.read_to_next_empty_line()
+
+ return section
+
+ def _read_sections(self):
+ while not self._doc.eof():
+ data = self._read_to_next_section()
+ name = data[0].strip()
+
+ if name.startswith('..'): # index section
+ yield name, data[1:]
+ elif len(data) < 2:
+ yield StopIteration
+ else:
+ yield name, self._strip(data[2:])
+
+ def _parse_param_list(self,content):
+ r = Reader(content)
+ params = []
+ while not r.eof():
+ header = r.read().strip()
+ if ' : ' in header:
+ arg_name, arg_type = header.split(' : ')[:2]
+ else:
+ arg_name, arg_type = header, ''
+
+ desc = r.read_to_next_unindented_line()
+ desc = dedent_lines(desc)
+
+ params.append((arg_name,arg_type,desc))
+
+ return params
+
+
+ _name_rgx = re.compile(r"^\s*(:(?P<role>\w+):`(?P<name>[a-zA-Z0-9_.-]+)`|"
+ r" (?P<name2>[a-zA-Z0-9_.-]+))\s*", re.X)
+ def _parse_see_also(self, content):
+ """
+ func_name : Descriptive text
+ continued text
+ another_func_name : Descriptive text
+ func_name1, func_name2, :meth:`func_name`, func_name3
+
+ """
+ items = []
+
+ def parse_item_name(text):
+ """Match ':role:`name`' or 'name'"""
+ m = self._name_rgx.match(text)
+ if m:
+ g = m.groups()
+ if g[1] is None:
+ return g[3], None
+ else:
+ return g[2], g[1]
+ raise ValueError("%s is not a item name" % text)
+
+ def push_item(name, rest):
+ if not name:
+ return
+ name, role = parse_item_name(name)
+ items.append((name, list(rest), role))
+ del rest[:]
+
+ current_func = None
+ rest = []
+
+ for line in content:
+ if not line.strip(): continue
+
+ m = self._name_rgx.match(line)
+ if m and line[m.end():].strip().startswith(':'):
+ push_item(current_func, rest)
+ current_func, line = line[:m.end()], line[m.end():]
+ rest = [line.split(':', 1)[1].strip()]
+ if not rest[0]:
+ rest = []
+ elif not line.startswith(' '):
+ push_item(current_func, rest)
+ current_func = None
+ if ',' in line:
+ for func in line.split(','):
+ push_item(func, [])
+ elif line.strip():
+ current_func = line
+ elif current_func is not None:
+ rest.append(line.strip())
+ push_item(current_func, rest)
+ return items
+
+ def _parse_index(self, section, content):
+ """
+ .. index: default
+ :refguide: something, else, and more
+
+ """
+ def strip_each_in(lst):
+ return [s.strip() for s in lst]
+
+ out = {}
+ section = section.split('::')
+ if len(section) > 1:
+ out['default'] = strip_each_in(section[1].split(','))[0]
+ for line in content:
+ line = line.split(':')
+ if len(line) > 2:
+ out[line[1]] = strip_each_in(line[2].split(','))
+ return out
+
+ def _parse_summary(self):
+ """Grab signature (if given) and summary"""
+ if self._is_at_section():
+ return
+
+ summary = self._doc.read_to_next_empty_line()
+ summary_str = " ".join([s.strip() for s in summary]).strip()
+ if re.compile('^([\w., ]+=)?\s*[\w\.]+\(.*\)$').match(summary_str):
+ self['Signature'] = summary_str
+ if not self._is_at_section():
+ self['Summary'] = self._doc.read_to_next_empty_line()
+ else:
+ self['Summary'] = summary
+
+ if not self._is_at_section():
+ self['Extended Summary'] = self._read_to_next_section()
+
+ def _parse(self):
+ self._doc.reset()
+ self._parse_summary()
+
+ for (section,content) in self._read_sections():
+ if not section.startswith('..'):
+ section = ' '.join([s.capitalize() for s in section.split(' ')])
+ if section in ('Parameters', 'Attributes', 'Methods',
+ 'Returns', 'Raises', 'Warns'):
+ self[section] = self._parse_param_list(content)
+ elif section.startswith('.. index::'):
+ self['index'] = self._parse_index(section, content)
+ elif section == 'See Also':
+ self['See Also'] = self._parse_see_also(content)
+ else:
+ self[section] = content
+
+ # string conversion routines
+
+ def _str_header(self, name, symbol='-'):
+ return [name, len(name)*symbol]
+
+ def _str_indent(self, doc, indent=4):
+ out = []
+ for line in doc:
+ out += [' '*indent + line]
+ return out
+
+ def _str_signature(self):
+ if self['Signature']:
+ return [self['Signature'].replace('*','\*')] + ['']
+ else:
+ return ['']
+
+ def _str_summary(self):
+ if self['Summary']:
+ return self['Summary'] + ['']
+ else:
+ return []
+
+ def _str_extended_summary(self):
+ if self['Extended Summary']:
+ return self['Extended Summary'] + ['']
+ else:
+ return []
+
+ def _str_param_list(self, name):
+ out = []
+ if self[name]:
+ out += self._str_header(name)
+ for param,param_type,desc in self[name]:
+ out += ['%s : %s' % (param, param_type)]
+ out += self._str_indent(desc)
+ out += ['']
+ return out
+
+ def _str_section(self, name):
+ out = []
+ if self[name]:
+ out += self._str_header(name)
+ out += self[name]
+ out += ['']
+ return out
+
+ def _str_see_also(self, func_role):
+ if not self['See Also']: return []
+ out = []
+ out += self._str_header("See Also")
+ last_had_desc = True
+ for func, desc, role in self['See Also']:
+ if role:
+ link = ':%s:`%s`' % (role, func)
+ elif func_role:
+ link = ':%s:`%s`' % (func_role, func)
+ else:
+ link = "`%s`_" % func
+ if desc or last_had_desc:
+ out += ['']
+ out += [link]
+ else:
+ out[-1] += ", %s" % link
+ if desc:
+ out += self._str_indent([' '.join(desc)])
+ last_had_desc = True
+ else:
+ last_had_desc = False
+ out += ['']
+ return out
+
+ def _str_index(self):
+ idx = self['index']
+ out = []
+ out += ['.. index:: %s' % idx.get('default','')]
+ for section, references in idx.items():
+ if section == 'default':
+ continue
+ out += [' :%s: %s' % (section, ', '.join(references))]
+ return out
+
+ def __str__(self, func_role=''):
+ out = []
+ out += self._str_signature()
+ out += self._str_summary()
+ out += self._str_extended_summary()
+ for param_list in ('Parameters','Returns','Raises'):
+ out += self._str_param_list(param_list)
+ out += self._str_section('Warnings')
+ out += self._str_see_also(func_role)
+ for s in ('Notes','References','Examples'):
+ out += self._str_section(s)
+ for param_list in ('Attributes', 'Methods'):
+ out += self._str_param_list(param_list)
+ out += self._str_index()
+ return '\n'.join(out)
+
+
+def indent(str,indent=4):
+ indent_str = ' '*indent
+ if str is None:
+ return indent_str
+ lines = str.split('\n')
+ return '\n'.join(indent_str + l for l in lines)
+
+def dedent_lines(lines):
+ """Deindent a list of lines maximally"""
+ return textwrap.dedent("\n".join(lines)).split("\n")
+
+def header(text, style='-'):
+ return text + '\n' + style*len(text) + '\n'
+
+
+class FunctionDoc(NumpyDocString):
+ def __init__(self, func, role='func', doc=None, config={}):
+ self._f = func
+ self._role = role # e.g. "func" or "meth"
+
+ if doc is None:
+ if func is None:
+ raise ValueError("No function or docstring given")
+ doc = inspect.getdoc(func) or ''
+ NumpyDocString.__init__(self, doc)
+
+ if not self['Signature'] and func is not None:
+ func, func_name = self.get_func()
+ try:
+ # try to read signature
+ argspec = inspect.getargspec(func)
+ argspec = inspect.formatargspec(*argspec)
+ argspec = argspec.replace('*','\*')
+ signature = '%s%s' % (func_name, argspec)
+ except TypeError as e:
+ signature = '%s()' % func_name
+ self['Signature'] = signature
+
+ def get_func(self):
+ func_name = getattr(self._f, '__name__', self.__class__.__name__)
+ if inspect.isclass(self._f):
+ func = getattr(self._f, '__call__', self._f.__init__)
+ else:
+ func = self._f
+ return func, func_name
+
+ def __str__(self):
+ out = ''
+
+ func, func_name = self.get_func()
+ signature = self['Signature'].replace('*', '\*')
+
+ roles = {'func': 'function',
+ 'meth': 'method'}
+
+ if self._role:
+ if not self._role in roles:
+ print("Warning: invalid role %s" % self._role)
+ out += '.. %s:: %s\n \n\n' % (roles.get(self._role,''),
+ func_name)
+
+ out += super(FunctionDoc, self).__str__(func_role=self._role)
+ return out
+
+
+class ClassDoc(NumpyDocString):
+ def __init__(self, cls, doc=None, modulename='', func_doc=FunctionDoc,
+ config={}):
+ if not inspect.isclass(cls) and cls is not None:
+ raise ValueError("Expected a class or None, but got %r" % cls)
+ self._cls = cls
+
+ if modulename and not modulename.endswith('.'):
+ modulename += '.'
+ self._mod = modulename
+
+ if doc is None:
+ if cls is None:
+ raise ValueError("No class or documentation string given")
+ doc = pydoc.getdoc(cls)
+
+ NumpyDocString.__init__(self, doc)
+
+ if config.get('show_class_members', True):
+ if not self['Methods']:
+ self['Methods'] = [(name, '', '')
+ for name in sorted(self.methods)]
+ if not self['Attributes']:
+ self['Attributes'] = [(name, '', '')
+ for name in sorted(self.properties)]
+
+ @property
+ def methods(self):
+ if self._cls is None:
+ return []
+ return [name for name,func in inspect.getmembers(self._cls)
+ if not name.startswith('_') and callable(func)]
+
+ @property
+ def properties(self):
+ if self._cls is None:
+ return []
+ return [name for name,func in inspect.getmembers(self._cls)
+ if not name.startswith('_') and func is None]
diff --git a/doc/ext/docscrape_sphinx.py b/doc/ext/docscrape_sphinx.py
new file mode 100644
index 0000000..9e66c4b
--- /dev/null
+++ b/doc/ext/docscrape_sphinx.py
@@ -0,0 +1,227 @@
+import re, inspect, textwrap, pydoc
+import sphinx
+from docscrape import NumpyDocString, FunctionDoc, ClassDoc
+
+
+class SphinxDocString(NumpyDocString):
+ def __init__(self, docstring, config={}):
+ self.use_plots = config.get('use_plots', False)
+ NumpyDocString.__init__(self, docstring, config=config)
+
+ # string conversion routines
+ def _str_header(self, name, symbol='`'):
+ return ['.. rubric:: ' + name, '']
+
+ def _str_field_list(self, name):
+ return [':' + name + ':']
+
+ def _str_indent(self, doc, indent=4):
+ out = []
+ for line in doc:
+ out += [' '*indent + line]
+ return out
+
+ def _str_signature(self):
+ return ['']
+ if self['Signature']:
+ return ['``%s``' % self['Signature']] + ['']
+ else:
+ return ['']
+
+ def _str_summary(self):
+ return self['Summary'] + ['']
+
+ def _str_extended_summary(self):
+ return self['Extended Summary'] + ['']
+
+ def _str_param_list(self, name):
+ out = []
+ if self[name]:
+ out += self._str_field_list(name)
+ out += ['']
+ for param,param_type,desc in self[name]:
+ out += self._str_indent(['**%s** : %s' % (param.strip(),
+ param_type)])
+ out += ['']
+ out += self._str_indent(desc,8)
+ out += ['']
+ return out
+
+ @property
+ def _obj(self):
+ if hasattr(self, '_cls'):
+ return self._cls
+ elif hasattr(self, '_f'):
+ return self._f
+ return None
+
+ def _str_member_list(self, name):
+ """
+ Generate a member listing, autosummary:: table where possible,
+ and a table where not.
+
+ """
+ out = []
+ if self[name]:
+ out += ['.. rubric:: %s' % name, '']
+ prefix = getattr(self, '_name', '')
+
+ if prefix:
+ prefix = '~%s.' % prefix
+
+ autosum = []
+ others = []
+ for param, param_type, desc in self[name]:
+ param = param.strip()
+ if not self._obj or hasattr(self._obj, param):
+ autosum += [" %s%s" % (prefix, param)]
+ else:
+ others.append((param, param_type, desc))
+
+ if autosum:
+ out += ['.. autosummary::', ' :toctree:', '']
+ out += autosum
+
+ if others:
+ maxlen_0 = max([len(x[0]) for x in others])
+ maxlen_1 = max([len(x[1]) for x in others])
+ hdr = "="*maxlen_0 + " " + "="*maxlen_1 + " " + "="*10
+ fmt = '%%%ds %%%ds ' % (maxlen_0, maxlen_1)
+ n_indent = maxlen_0 + maxlen_1 + 4
+ out += [hdr]
+ for param, param_type, desc in others:
+ out += [fmt % (param.strip(), param_type)]
+ out += self._str_indent(desc, n_indent)
+ out += [hdr]
+ out += ['']
+ return out
+
+ def _str_section(self, name):
+ out = []
+ if self[name]:
+ out += self._str_header(name)
+ out += ['']
+ content = textwrap.dedent("\n".join(self[name])).split("\n")
+ out += content
+ out += ['']
+ return out
+
+ def _str_see_also(self, func_role):
+ out = []
+ if self['See Also']:
+ see_also = super(SphinxDocString, self)._str_see_also(func_role)
+ out = ['.. seealso::', '']
+ out += self._str_indent(see_also[2:])
+ return out
+
+ def _str_warnings(self):
+ out = []
+ if self['Warnings']:
+ out = ['.. warning::', '']
+ out += self._str_indent(self['Warnings'])
+ return out
+
+ def _str_index(self):
+ idx = self['index']
+ out = []
+ if len(idx) == 0:
+ return out
+
+ out += ['.. index:: %s' % idx.get('default','')]
+ for section, references in idx.items():
+ if section == 'default':
+ continue
+ elif section == 'refguide':
+ out += [' single: %s' % (', '.join(references))]
+ else:
+ out += [' %s: %s' % (section, ','.join(references))]
+ return out
+
+ def _str_references(self):
+ out = []
+ if self['References']:
+ out += self._str_header('References')
+ if isinstance(self['References'], str):
+ self['References'] = [self['References']]
+ out.extend(self['References'])
+ out += ['']
+ # Latex collects all references to a separate bibliography,
+ # so we need to insert links to it
+ if sphinx.__version__ >= "0.6":
+ out += ['.. only:: latex','']
+ else:
+ out += ['.. latexonly::','']
+ items = []
+ for line in self['References']:
+ m = re.match(r'.. \[([a-z0-9._-]+)\]', line, re.I)
+ if m:
+ items.append(m.group(1))
+ out += [' ' + ", ".join(["[%s]_" % item for item in items]), '']
+ return out
+
+ def _str_examples(self):
+ examples_str = "\n".join(self['Examples'])
+
+ if (self.use_plots and 'import matplotlib' in examples_str
+ and 'plot::' not in examples_str):
+ out = []
+ out += self._str_header('Examples')
+ out += ['.. plot::', '']
+ out += self._str_indent(self['Examples'])
+ out += ['']
+ return out
+ else:
+ return self._str_section('Examples')
+
+ def __str__(self, indent=0, func_role="obj"):
+ out = []
+ out += self._str_signature()
+ out += self._str_index() + ['']
+ out += self._str_summary()
+ out += self._str_extended_summary()
+ for param_list in ('Parameters', 'Returns', 'Raises'):
+ out += self._str_param_list(param_list)
+ out += self._str_warnings()
+ out += self._str_see_also(func_role)
+ out += self._str_section('Notes')
+ out += self._str_references()
+ out += self._str_examples()
+ for param_list in ('Attributes', 'Methods'):
+ out += self._str_member_list(param_list)
+ out = self._str_indent(out,indent)
+ return '\n'.join(out)
+
+class SphinxFunctionDoc(SphinxDocString, FunctionDoc):
+ def __init__(self, obj, doc=None, config={}):
+ self.use_plots = config.get('use_plots', False)
+ FunctionDoc.__init__(self, obj, doc=doc, config=config)
+
+class SphinxClassDoc(SphinxDocString, ClassDoc):
+ def __init__(self, obj, doc=None, func_doc=None, config={}):
+ self.use_plots = config.get('use_plots', False)
+ ClassDoc.__init__(self, obj, doc=doc, func_doc=None, config=config)
+
+class SphinxObjDoc(SphinxDocString):
+ def __init__(self, obj, doc=None, config={}):
+ self._f = obj
+ SphinxDocString.__init__(self, doc, config=config)
+
+def get_doc_object(obj, what=None, doc=None, config={}):
+ if what is None:
+ if inspect.isclass(obj):
+ what = 'class'
+ elif inspect.ismodule(obj):
+ what = 'module'
+ elif callable(obj):
+ what = 'function'
+ else:
+ what = 'object'
+ if what == 'class':
+ return SphinxClassDoc(obj, func_doc=SphinxFunctionDoc, doc=doc,
+ config=config)
+ elif what in ('function', 'method'):
+ return SphinxFunctionDoc(obj, doc=doc, config=config)
+ else:
+ if doc is None:
+ doc = pydoc.getdoc(obj)
+ return SphinxObjDoc(obj, doc, config=config)
diff --git a/doc/ext/examplesgenerator.py b/doc/ext/examplesgenerator.py
new file mode 100644
index 0000000..20c32f7
--- /dev/null
+++ b/doc/ext/examplesgenerator.py
@@ -0,0 +1,139 @@
+""" Called from vispy_conf.py to generate the examples for the docs from the
+example Python files.
+"""
+
+from __future__ import print_function, division
+
+import os
+import sys
+import shutil
+
+try:
+ from urllib2 import urlopen
+except ImportError:
+ from urllib.request import urlopen # Py3k
+
+
+THIS_DIR = os.path.dirname(os.path.abspath(__file__))
+DOC_DIR = os.path.abspath(os.path.join(THIS_DIR, '..'))
+EXAMPLES_DIR = os.path.abspath(os.path.join(DOC_DIR, '..', 'examples'))
+OUTPUT_DIR = os.path.join(DOC_DIR, 'examples')
+
+
+
+def clean():
+ # Clear examples dir
+ if os.path.isdir(OUTPUT_DIR):
+ shutil.rmtree(OUTPUT_DIR)
+ # Clean examples file
+ fname = os.path.join(DOC_DIR, 'examples.rst')
+ if os.path.isfile(fname):
+ os.remove(fname)
+
+
+def main():
+
+ clean()
+
+ if not os.path.isdir(OUTPUT_DIR):
+ os.mkdir(OUTPUT_DIR)
+
+ # Get examples and sort
+ examples = list( get_example_filenames(EXAMPLES_DIR) )
+ examples.sort(key=lambda x: x[1])
+
+ create_examples(examples)
+ create_examples_list(examples)
+
+
+
+def get_example_filenames(examples_dir):
+ """ Yield (filename, name) elements for all examples. The examples
+ are organized in directories, therefore the name can contain a
+ forward slash.
+ """
+ for (dirpath, dirnames, filenames) in os.walk(examples_dir):
+ for fname in filenames:
+ if not fname.endswith('.py'): continue
+ filename = os.path.join(dirpath, fname)
+ name = filename[len(examples_dir):].lstrip('/\\')[:-3]
+ name = name.replace('\\', '/')
+ yield filename, name
+
+
+
+def create_examples(examples):
+
+ # Create doc file for each example
+ for filename, name in examples:
+ print('Writing example %s' % name)
+
+ # Create title
+ lines = []
+ lines.append(name)
+ lines.append('-'*len(lines[-1]))
+ lines.append('')
+
+ # Get source
+ in_gallery = False
+ doclines = []
+ sourcelines = []
+ with open(os.path.join(EXAMPLES_DIR, name+'.py')) as f:
+ for line in f.readlines():
+ line = line.rstrip()
+ if line.startswith('# vispy:') and 'gallery' in line:
+ in_gallery = True
+ if not doclines:
+ if line.startswith('"""'):
+ doclines.append(line.lstrip('" '))
+ sourcelines = []
+ else:
+ sourcelines.append(' ' + line)
+ elif not sourcelines:
+ if '"""' in line:
+ sourcelines.append(' ' + line.partition('"""')[0])
+ else:
+ doclines.append(line)
+ else:
+ sourcelines.append(' ' + line)
+
+ # Add desciprion
+ lines.extend(doclines)
+ lines.append('')
+
+ # Add source code
+ lines.append('.. code-block:: python')
+ lines.append(' ')
+ lines.extend(sourcelines)
+ lines.append('')
+
+ # Write
+ output_filename = os.path.join(OUTPUT_DIR, name+'.rst')
+ output_dir = os.path.dirname(output_filename)
+ if not os.path.isdir(output_dir):
+ os.mkdir(output_dir)
+ with open(output_filename, 'w') as f:
+ f.write('\n'.join(lines))
+
+
+
+def create_examples_list(examples):
+
+ # Create TOC
+ lines = []
+ lines.append('List of examples')
+ lines.append('='*len(lines[-1]))
+ lines.append('')
+
+ # Add entry for each example that we know
+ for _, name in examples:
+ lines.append('* :doc:`examples/%s`' % name)
+
+ # Write file
+ with open(os.path.join(DOC_DIR, 'examples.rst'), 'w') as f:
+ f.write('\n'.join(lines))
+
+
+if __name__ == '__main__':
+ main()
+
diff --git a/doc/ext/glapigenerator.py b/doc/ext/glapigenerator.py
new file mode 100644
index 0000000..dc08d44
--- /dev/null
+++ b/doc/ext/glapigenerator.py
@@ -0,0 +1,77 @@
+""" Called from vispy_ext.py to generate the GL API.
+"""
+
+import os
+import sys
+from vispy.gloo import gl
+
+THISDIR = os.path.dirname(os.path.abspath(__file__))
+DOCSDIR = os.path.join(THISDIR, '..')
+
+def clean():
+ fname = os.path.join(DOCSDIR, 'gl.rst')
+ if os.path.isfile(fname):
+ os.remove(fname)
+
+
+def parse_api(ob):
+ # Parse the namespace
+ const_names = []
+ func_names = []
+ for name in dir(ob):
+ if name.startswith('GL_'):
+ const_names.append(name)
+ elif name.startswith('gl'):
+ func_names.append(name)
+ return const_names, func_names
+
+
+def main():
+
+ lines = []
+
+ # Get info
+ gl_const_names, gl_func_names = parse_api(gl)
+ glext_const_names, glext_func_names = parse_api(gl.ext)
+
+ # Write title
+ lines.append('OpenGL ES 2.0 API')
+ lines.append('='*len(lines[-1]))
+ lines.append('')
+
+ # Some info
+ lines.append('The ``vispy.gloo.gl`` namespace provides the OpenGL ES 2.0 API,')
+ lines.append('Consisting of %i constants and %i functions ' %
+ (len(gl_const_names), len(gl_func_names)) )
+ lines.append('(with %i and %i more in the extensions) ' %
+ (len(glext_const_names), len(glext_func_names)) )
+
+ lines.append('At this moment, the functions are taken from OpenGL.GL (provided by the PyOpenGL package).')
+ lines.append('')
+
+ # Write class header
+ lines.append('**vispy.gloo.gl**\n')
+
+ # Write constants and functions
+ for name in sorted(gl_func_names):
+ lines.append(' * %s()' % name)
+ for name in sorted(gl_const_names):
+ lines.append(' * %s' % name)
+
+ # Write class header
+ lines.append('**vispy.gloo.gl.ext**\n')
+
+ # Write constants and functions
+ for name in sorted(glext_func_names):
+ lines.append(' * %s()' % name)
+ for name in sorted(glext_const_names):
+ lines.append(' * %s' % name)
+
+
+ # Write file
+ with open(os.path.join(DOCSDIR, 'gl.rst'), 'w') as f:
+ f.write('\n'.join(lines))
+
+
+if __name__ == '__main__':
+ main()
diff --git a/doc/ext/gloooverviewgenerator.py b/doc/ext/gloooverviewgenerator.py
new file mode 100644
index 0000000..8de9981
--- /dev/null
+++ b/doc/ext/gloooverviewgenerator.py
@@ -0,0 +1,94 @@
+""" Called from vispy_ext.py to generate the overview section of the
+gloo docs. This section is simply added to gloo.__doc__.
+"""
+
+from vispy import gloo
+
+def main():
+ gloo.__doc__ += generate_overview_docs()
+
+
+def clean():
+ pass
+
+
+def get_docs_for_class(klass):
+ """ Get props and methods for a class.
+ """
+
+ # Prepare
+ baseatts = dir(gloo.GLObject)
+ functype = type(gloo.GLObject.activate)
+ proptype = type(gloo.GLObject.handle)
+ props, funcs = set(), set()
+
+ for att in sorted(dir(klass)):
+ if klass is not gloo.GLObject and att in baseatts:
+ continue
+ if att.startswith('_') or att.lower() != att:
+ continue
+ # Get ob and module name
+ attob = getattr(klass, att)
+ modulename = klass.__module__.split('.')[-1]
+ # Get actual klass
+ actualklass = klass
+ while True:
+ tmp = actualklass.__base__
+ if att in dir(tmp):
+ actualklass = tmp
+ else:
+ break
+ if actualklass == klass:
+ modulename = ''
+ # Append
+ if isinstance(attob, functype):
+ funcs.add(' :meth:`~%s.%s.%s`,' % (
+ modulename, actualklass.__name__, att))
+ elif isinstance(attob, proptype):
+ props.add(' :attr:`~%s.%s.%s`,' % (
+ modulename, actualklass.__name__, att))
+ # Done
+ return props, funcs
+
+
+def generate_overview_docs():
+ """ Generate the overview section for the gloo docs.
+ """
+
+ lines = []
+ lines.append('Overview')
+ lines.append('='*len(lines[-1]))
+
+ for klasses in [(gloo.GLObject,),
+ (gloo.Program,),
+ (gloo.VertexShader, gloo.FragmentShader),
+ (gloo.VertexBuffer, gloo.ElementBuffer),
+ (gloo.Texture2D, gloo.Texture3D, gloo.TextureCubeMap),
+ (gloo.RenderBuffer,),
+ (gloo.FrameBuffer,),
+ ]:
+ # Init line
+ line = '*'
+ for klass in klasses:
+ line += ' :class:`%s`,' % klass.__name__
+ line = line[:-1]
+ # Get atts for these classes, sort by name, prop/func
+ funcs, props = set(), set()
+ for klass in klasses:
+ props_, funcs_ = get_docs_for_class(klass)
+ props.update(props_)
+ funcs.update(funcs_)
+ # Add props and funcs
+ if props:
+ line += '\n\n * properties:'
+ for item in sorted(props):
+ line += item
+ if funcs:
+ line += '\n\n * methods:'
+ for item in sorted(funcs):
+ line += item
+ # Add line, strip last char
+ lines.append(line[:-1])
+
+ return '\n'.join(lines)
+
diff --git a/doc/ext/numpydoc.py b/doc/ext/numpydoc.py
new file mode 100644
index 0000000..933e212
--- /dev/null
+++ b/doc/ext/numpydoc.py
@@ -0,0 +1,166 @@
+"""
+========
+numpydoc
+========
+
+Sphinx extension that handles docstrings in the Numpy standard format. [1]
+
+It will:
+
+- Convert Parameters etc. sections to field lists.
+- Convert See Also section to a See also entry.
+- Renumber references.
+- Extract the signature from the docstring, if it can't be determined otherwise.
+
+.. [1] http://projects.scipy.org/numpy/wiki/CodingStyleGuidelines#docstring-standard
+
+"""
+
+import os, re, pydoc, sys
+from docscrape_sphinx import get_doc_object, SphinxDocString
+from sphinx.util.compat import Directive
+import inspect
+if sys.version_info > (3,):
+ unicode = str
+
+def mangle_docstrings(app, what, name, obj, options, lines,
+ reference_offset=[0]):
+
+ cfg = dict(use_plots=app.config.numpydoc_use_plots,
+ show_class_members=app.config.numpydoc_show_class_members)
+
+ if what == 'module':
+ # Strip top title
+ title_re = re.compile(r'^\s*[#*=]{4,}\n[a-z0-9 -]+\n[#*=]{4,}\s*',
+ re.I|re.S)
+ lines[:] = title_re.sub(u'', u"\n".join(lines)).split(u"\n")
+ else:
+ doc = get_doc_object(obj, what, u"\n".join(lines), config=cfg)
+ lines[:] = unicode(doc).split(u"\n")
+
+ if app.config.numpydoc_edit_link and hasattr(obj, '__name__') and \
+ obj.__name__:
+ if hasattr(obj, '__module__'):
+ v = dict(full_name=u"%s.%s" % (obj.__module__, obj.__name__))
+ else:
+ v = dict(full_name=obj.__name__)
+ lines += [u'', u'.. htmlonly::', '']
+ lines += [u' %s' % x for x in
+ (app.config.numpydoc_edit_link % v).split("\n")]
+
+ # replace reference numbers so that there are no duplicates
+ references = []
+ for line in lines:
+ line = line.strip()
+ m = re.match(r'^.. \[([a-z0-9_.-])\]', line, re.I)
+ if m:
+ references.append(m.group(1))
+
+ # start renaming from the longest string, to avoid overwriting parts
+ references.sort(key=lambda x: -len(x))
+ if references:
+ for i, line in enumerate(lines):
+ for r in references:
+ if re.match(r'^\d+$', r):
+ new_r = u"R%d" % (reference_offset[0] + int(r))
+ else:
+ new_r = u"%s%d" % (r, reference_offset[0])
+ lines[i] = lines[i].replace(u'[%s]_' % r,
+ u'[%s]_' % new_r)
+ lines[i] = lines[i].replace(u'.. [%s]' % r,
+ u'.. [%s]' % new_r)
+
+ reference_offset[0] += len(references)
+
+def mangle_signature(app, what, name, obj, options, sig, retann):
+ # Do not try to inspect classes that don't define `__init__`
+ if (inspect.isclass(obj) and
+ (not hasattr(obj, '__init__') or
+ 'initializes x; see ' in pydoc.getdoc(obj.__init__))):
+ return '', ''
+
+ if not (callable(obj) or hasattr(obj, '__argspec_is_invalid_')): return
+ if not hasattr(obj, '__doc__'): return
+
+ doc = SphinxDocString(pydoc.getdoc(obj))
+ if doc['Signature']:
+ sig = re.sub(u"^[^(]*", u"", doc['Signature'])
+ return sig, u''
+
+def setup(app, get_doc_object_=get_doc_object):
+ global get_doc_object
+ get_doc_object = get_doc_object_
+
+ app.connect('autodoc-process-docstring', mangle_docstrings)
+ app.connect('autodoc-process-signature', mangle_signature)
+ app.add_config_value('numpydoc_edit_link', None, False)
+ app.add_config_value('numpydoc_use_plots', None, False)
+ app.add_config_value('numpydoc_show_class_members', True, True)
+
+ # Extra mangling domains
+ app.add_domain(NumpyPythonDomain)
+ app.add_domain(NumpyCDomain)
+
+#------------------------------------------------------------------------------
+# Docstring-mangling domains
+#------------------------------------------------------------------------------
+
+from docutils.statemachine import ViewList
+from sphinx.domains.c import CDomain
+from sphinx.domains.python import PythonDomain
+
+class ManglingDomainBase(object):
+ directive_mangling_map = {}
+
+ def __init__(self, *a, **kw):
+ super(ManglingDomainBase, self).__init__(*a, **kw)
+ self.wrap_mangling_directives()
+
+ def wrap_mangling_directives(self):
+ for name, objtype in self.directive_mangling_map.items():
+ self.directives[name] = wrap_mangling_directive(
+ self.directives[name], objtype)
+
+class NumpyPythonDomain(ManglingDomainBase, PythonDomain):
+ name = 'np'
+ directive_mangling_map = {
+ 'function': 'function',
+ 'class': 'class',
+ 'exception': 'class',
+ 'method': 'function',
+ 'classmethod': 'function',
+ 'staticmethod': 'function',
+ 'attribute': 'attribute',
+ }
+
+class NumpyCDomain(ManglingDomainBase, CDomain):
+ name = 'np-c'
+ directive_mangling_map = {
+ 'function': 'function',
+ 'member': 'attribute',
+ 'macro': 'function',
+ 'type': 'class',
+ 'var': 'object',
+ }
+
+def wrap_mangling_directive(base_directive, objtype):
+ class directive(base_directive):
+ def run(self):
+ env = self.state.document.settings.env
+
+ name = None
+ if self.arguments:
+ m = re.match(r'^(.*\s+)?(.*?)(\(.*)?', self.arguments[0])
+ name = m.group(2).strip()
+
+ if not name:
+ name = self.arguments[0]
+
+ lines = list(self.content)
+ mangle_docstrings(env.app, objtype, name, None, None, lines)
+ self.content = ViewList(lines, self.content.parent)
+
+ return base_directive.run(self)
+
+ return directive
+
diff --git a/doc/ext/scriptnamemangler.py b/doc/ext/scriptnamemangler.py
new file mode 100644
index 0000000..5e02bd3
--- /dev/null
+++ b/doc/ext/scriptnamemangler.py
@@ -0,0 +1,30 @@
+"""
+Readthedocs replaces some javascript sources to pull them from their own
+special server. Somehow their docstools.js is incompatibe, breaking
+the search tool of the docs. This hopefully fixes that.
+"""
+
+import os
+import shutil
+
+THISDIR = os.path.abspath(os.path.dirname(__file__))
+HTMLDIR = os.path.join(THISDIR, '..', '_build', 'html')
+
+
+def init():
+ pass
+
+def clean(app, *args):
+ # Rename doctools.js
+ shutil.copy(os.path.join(HTMLDIR, '_static', 'doctools.js'),
+ os.path.join(HTMLDIR, '_static', 'doctools_.js'))
+ # Change reference
+ search_html = os.path.join(HTMLDIR, 'search.html')
+ text = open(search_html, 'rt').read()
+ text = text.replace('/doctools.js', '/doctools_.js')
+ open(search_html, 'wt').write(text)
+
+
+def setup(app):
+ init()
+ app.connect('build-finished', clean)
diff --git a/doc/ext/vispy_ext.py b/doc/ext/vispy_ext.py
new file mode 100644
index 0000000..a7127a0
--- /dev/null
+++ b/doc/ext/vispy_ext.py
@@ -0,0 +1,26 @@
+""" Invoke various functionality for vispy docs.
+"""
+
+import examplesgenerator
+import glapigenerator
+import gloooverviewgenerator
+
+
+def init():
+ print('Generating examples.')
+ examplesgenerator.main()
+ print('Generating GL API.')
+ glapigenerator.main()
+ print('Generating gloo overview section.')
+ gloooverviewgenerator.main()
+
+
+def clean(app, *args):
+ examplesgenerator.clean()
+ glapigenerator.clean()
+ gloooverviewgenerator.clean()
+
+
+def setup(app):
+ init()
+ app.connect('build-finished', clean)
diff --git a/doc/gloo.rst b/doc/gloo.rst
new file mode 100644
index 0000000..fc70237
--- /dev/null
+++ b/doc/gloo.rst
@@ -0,0 +1,83 @@
+=====================================
+The object oriented OpenGL API (gloo)
+=====================================
+
+.. automodule:: vispy.gloo
+
+
+Base class
+==========
+
+
+.. autoclass:: vispy.gloo.GLObject
+ :members:
+
+
+
+Classes related to shaders
+==========================
+
+.. autoclass:: vispy.gloo.Program
+ :members:
+
+
+.. autoclass:: vispy.gloo.VertexShader
+ :members:
+
+.. autoclass:: vispy.gloo.FragmentShader
+ :members:
+
+.. autoclass:: vispy.gloo.shader.Shader
+ :members:
+
+
+
+Buffer classes
+==============
+
+
+.. autoclass:: vispy.gloo.VertexBuffer
+ :members:
+
+.. autoclass:: vispy.gloo.ElementBuffer
+ :members:
+
+.. autoclass:: vispy.gloo.buffer.DataBuffer
+ :members:
+
+.. autoclass:: vispy.gloo.buffer.Buffer
+ :members:
+
+
+Texture classes
+===============
+
+.. autoclass:: vispy.gloo.Texture2D
+
+.. autoclass:: vispy.gloo.Texture3D
+
+.. autoclass:: vispy.gloo.TextureCubeMap
+
+.. autoclass:: vispy.gloo.texture.Texture
+ :members:
+
+
+Classes related to FBO
+======================
+
+.. autoclass:: vispy.gloo.FrameBuffer
+ :members:
+
+.. autoclass:: vispy.gloo.RenderBuffer
+ :members:
+
+
+vispy.gloo.gl - low level GL API
+================================
+
+Vispy also exposes a (low level) functional GL API. At this point gloo
+is not yet fully independenat since it does not cover functions like
+glClear().
+
+ `vispy.gloo.gl docs <gl.html>`_
+
\ No newline at end of file
diff --git a/doc/index.rst b/doc/index.rst
new file mode 100644
index 0000000..a3aa7e6
--- /dev/null
+++ b/doc/index.rst
@@ -0,0 +1,37 @@
+.. vispy documentation master file, created by
+ sphinx-quickstart on Sat May 4 16:52:02 2013.
+ You can adapt this file completely to your liking, but it should at least
+ contain the root `toctree` directive.
+
+Welcome to vispy's documentation!
+=================================
+
+Vispy is a collaborative project that has the goal to allow more sharing
+of code between visualization projects based on OpenGL. It does this
+by providing powerful interfaces to OpenGL, at different levels of
+abstraction and generality.
+
+This is the auto-generated API documentation for the vispy library.
+See http://vispy.org for more information on the vispy project.
+
+Contents:
+
+.. toctree::
+ :maxdepth: 2
+
+ vispy.util - Utilities <util>
+ vispy.app - Application API <app>
+ vispy.gloo - object oriented GL API <gloo>
+ vispy.visuals <visuals>
+
+ examples
+ releasenotes
+
+
+Indices and tables
+==================
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`
+
diff --git a/doc/make.bat b/doc/make.bat
new file mode 100644
index 0000000..9cad97b
--- /dev/null
+++ b/doc/make.bat
@@ -0,0 +1,190 @@
+ at ECHO OFF
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+ set SPHINXBUILD=sphinx-build
+)
+set BUILDDIR=_build
+set ALLSPHINXOPTS=-d %BUILDDIR%/doctrees %SPHINXOPTS% .
+set I18NSPHINXOPTS=%SPHINXOPTS% .
+if NOT "%PAPER%" == "" (
+ set ALLSPHINXOPTS=-D latex_paper_size=%PAPER% %ALLSPHINXOPTS%
+ set I18NSPHINXOPTS=-D latex_paper_size=%PAPER% %I18NSPHINXOPTS%
+)
+
+if "%1" == "" goto help
+
+if "%1" == "help" (
+ :help
+ echo.Please use `make ^<target^>` where ^<target^> is one of
+ echo. html to make standalone HTML files
+ echo. dirhtml to make HTML files named index.html in directories
+ echo. singlehtml to make a single large HTML file
+ echo. pickle to make pickle files
+ echo. json to make JSON files
+ echo. htmlhelp to make HTML files and a HTML help project
+ echo. qthelp to make HTML files and a qthelp project
+ echo. devhelp to make HTML files and a Devhelp project
+ echo. epub to make an epub
+ echo. latex to make LaTeX files, you can set PAPER=a4 or PAPER=letter
+ echo. text to make text files
+ echo. man to make manual pages
+ echo. texinfo to make Texinfo files
+ echo. gettext to make PO message catalogs
+ echo. changes to make an overview over all changed/added/deprecated items
+ echo. linkcheck to check all external links for integrity
+ echo. doctest to run all doctests embedded in the documentation if enabled
+ goto end
+)
+
+if "%1" == "clean" (
+ for /d %%i in (%BUILDDIR%\*) do rmdir /q /s %%i
+ del /q /s %BUILDDIR%\*
+ goto end
+)
+
+if "%1" == "html" (
+ %SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The HTML pages are in %BUILDDIR%/html.
+ goto end
+)
+
+if "%1" == "dirhtml" (
+ %SPHINXBUILD% -b dirhtml %ALLSPHINXOPTS% %BUILDDIR%/dirhtml
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The HTML pages are in %BUILDDIR%/dirhtml.
+ goto end
+)
+
+if "%1" == "singlehtml" (
+ %SPHINXBUILD% -b singlehtml %ALLSPHINXOPTS% %BUILDDIR%/singlehtml
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The HTML pages are in %BUILDDIR%/singlehtml.
+ goto end
+)
+
+if "%1" == "pickle" (
+ %SPHINXBUILD% -b pickle %ALLSPHINXOPTS% %BUILDDIR%/pickle
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished; now you can process the pickle files.
+ goto end
+)
+
+if "%1" == "json" (
+ %SPHINXBUILD% -b json %ALLSPHINXOPTS% %BUILDDIR%/json
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished; now you can process the JSON files.
+ goto end
+)
+
+if "%1" == "htmlhelp" (
+ %SPHINXBUILD% -b htmlhelp %ALLSPHINXOPTS% %BUILDDIR%/htmlhelp
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished; now you can run HTML Help Workshop with the ^
+.hhp project file in %BUILDDIR%/htmlhelp.
+ goto end
+)
+
+if "%1" == "qthelp" (
+ %SPHINXBUILD% -b qthelp %ALLSPHINXOPTS% %BUILDDIR%/qthelp
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished; now you can run "qcollectiongenerator" with the ^
+.qhcp project file in %BUILDDIR%/qthelp, like this:
+ echo.^> qcollectiongenerator %BUILDDIR%\qthelp\vispy.qhcp
+ echo.To view the help file:
+ echo.^> assistant -collectionFile %BUILDDIR%\qthelp\vispy.ghc
+ goto end
+)
+
+if "%1" == "devhelp" (
+ %SPHINXBUILD% -b devhelp %ALLSPHINXOPTS% %BUILDDIR%/devhelp
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished.
+ goto end
+)
+
+if "%1" == "epub" (
+ %SPHINXBUILD% -b epub %ALLSPHINXOPTS% %BUILDDIR%/epub
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The epub file is in %BUILDDIR%/epub.
+ goto end
+)
+
+if "%1" == "latex" (
+ %SPHINXBUILD% -b latex %ALLSPHINXOPTS% %BUILDDIR%/latex
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished; the LaTeX files are in %BUILDDIR%/latex.
+ goto end
+)
+
+if "%1" == "text" (
+ %SPHINXBUILD% -b text %ALLSPHINXOPTS% %BUILDDIR%/text
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The text files are in %BUILDDIR%/text.
+ goto end
+)
+
+if "%1" == "man" (
+ %SPHINXBUILD% -b man %ALLSPHINXOPTS% %BUILDDIR%/man
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The manual pages are in %BUILDDIR%/man.
+ goto end
+)
+
+if "%1" == "texinfo" (
+ %SPHINXBUILD% -b texinfo %ALLSPHINXOPTS% %BUILDDIR%/texinfo
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The Texinfo files are in %BUILDDIR%/texinfo.
+ goto end
+)
+
+if "%1" == "gettext" (
+ %SPHINXBUILD% -b gettext %I18NSPHINXOPTS% %BUILDDIR%/locale
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Build finished. The message catalogs are in %BUILDDIR%/locale.
+ goto end
+)
+
+if "%1" == "changes" (
+ %SPHINXBUILD% -b changes %ALLSPHINXOPTS% %BUILDDIR%/changes
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.The overview file is in %BUILDDIR%/changes.
+ goto end
+)
+
+if "%1" == "linkcheck" (
+ %SPHINXBUILD% -b linkcheck %ALLSPHINXOPTS% %BUILDDIR%/linkcheck
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Link check complete; look for any errors in the above output ^
+or in %BUILDDIR%/linkcheck/output.txt.
+ goto end
+)
+
+if "%1" == "doctest" (
+ %SPHINXBUILD% -b doctest %ALLSPHINXOPTS% %BUILDDIR%/doctest
+ if errorlevel 1 exit /b 1
+ echo.
+ echo.Testing of doctests in the sources finished, look at the ^
+results in %BUILDDIR%/doctest/output.txt.
+ goto end
+)
+
+:end
diff --git a/doc/releasenotes.rst b/doc/releasenotes.rst
new file mode 100644
index 0000000..3ebbb4f
--- /dev/null
+++ b/doc/releasenotes.rst
@@ -0,0 +1,30 @@
+=============
+Release notes
+=============
+
+**Vispy 0.2**
+
+
+In this release we focussed on improving and finalizing the object
+oriented OpenGL interface ``vispy.gloo``. Some major (backward
+incompatible) changes were done. However, from this release we consider
+the ``vispy.gloo`` package relatively stable and we try to minimize
+backward incompatibilities.
+
+Changes in more detail:
+
+ * ``vispy.oogl`` is renamed to ``vispy.gloo``
+ * ``vispy.gl`` is moved to ``vispy.gloo.gl`` since most users will
+ use gloo to interface with OpenGL.
+ * Improved (and thus changed) several parts of the gloo API.
+ * Some parts of gloo were refactored and should be more robust.
+ * Much better coverage of the test suite.
+ * Compatibility with Python 2.6 (Jerome Kieffer)
+ * More examples and a gallery on the website to show them off.
+
+
+**Vispy 0.1.0**
+
+
+First release. We have an initial version of the object oriented interface
+to OpenGL, called `vispy.oogl`.
diff --git a/doc/shaders.svg b/doc/shaders.svg
new file mode 100644
index 0000000..b912bef
--- /dev/null
+++ b/doc/shaders.svg
@@ -0,0 +1,1318 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+ xmlns:dc="http://purl.org/dc/elements/1.1/"
+ xmlns:cc="http://creativecommons.org/ns#"
+ xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+ xmlns:svg="http://www.w3.org/2000/svg"
+ xmlns="http://www.w3.org/2000/svg"
+ xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+ xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+ width="1304.6836"
+ height="806.07904"
+ id="svg2"
+ version="1.1"
+ inkscape:version="0.48+devel r"
+ sodipodi:docname="shaders.svg">
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+ <path
+ transform="matrix(-0.4,0,0,-0.4,-4,0)"
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+ inkscape:connector-curvature="0" />
+ </marker>
+ <marker
+ inkscape:isstock="true"
+ style="overflow:visible"
+ id="marker11953"
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+ inkscape:stockid="Arrow1Mend">
+ <path
+ transform="matrix(-0.4,0,0,-0.4,-4,0)"
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+ <path
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+ xml:space="preserve"><tspan
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+ x="267.14285"
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+ x="267.14285"
+ sodipodi:role="line">view box. Clipping takes place at</tspan><tspan
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+ x="267.14285"
+ sodipodi:role="line"
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+ style="font-size:10px;font-style:normal;font-weight:normal;text-align:start;line-height:125%;letter-spacing:0px;word-spacing:0px;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
+ xml:space="preserve"><tspan
+ y="358.79077"
+ x="255.71428"
+ id="tspan11903"
+ sodipodi:role="line">Transform</tspan></text>
+ </g>
+ <g
+ id="g11905"
+ transform="translate(137.41421,164)">
+ <rect
+ style="fill:#ffffff;fill-opacity:1;stroke:#000000;stroke-width:0.81;stroke-linecap:round;stroke-linejoin:round;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
+ id="rect11907"
+ width="55"
+ height="57.857143"
+ x="252.85715"
+ y="343.07648" />
+ <text
+ xml:space="preserve"
+ style="font-size:10px;font-style:normal;font-weight:normal;text-align:start;line-height:125%;letter-spacing:0px;word-spacing:0px;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
+ x="255.71428"
+ y="358.79077"
+ id="text11909"
+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ id="tspan11911"
+ x="255.71428"
+ y="358.79077">Transform</tspan></text>
+ </g>
+ </g>
+ <g
+ transform="translate(719.8974,-66.727922)"
+ id="g11941">
+ <path
+ sodipodi:nodetypes="cc"
+ style="fill:none;stroke:#000000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;marker-end:url(#marker10423)"
+ d="m 216.63936,802.6609 77.57143,0"
+ id="path11943"
+ inkscape:connector-curvature="0" />
+ <text
+ xml:space="preserve"
+ style="font-size:10px;font-style:normal;font-weight:normal;text-align:start;line-height:125%;letter-spacing:0px;word-spacing:0px;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
+ x="215.92508"
+ y="816.08948"
+ id="text11945"
+ sodipodi:linespacing="125%"><tspan
+ sodipodi:role="line"
+ x="215.92508"
+ y="816.08948"
+ id="tspan11947">Per-transform</tspan><tspan
+ id="tspan11949"
+ sodipodi:role="line"
+ x="215.92508"
+ y="828.58948">uniforms and</tspan><tspan
+ id="tspan11951"
+ sodipodi:role="line"
+ x="215.92508"
+ y="841.08948">attributes</tspan></text>
+ </g>
+ </g>
+</svg>
diff --git a/doc/themes/scikit-image/layout.html b/doc/themes/scikit-image/layout.html
new file mode 100644
index 0000000..1c6163a
--- /dev/null
+++ b/doc/themes/scikit-image/layout.html
@@ -0,0 +1,113 @@
+{#
+ scikit-image/layout.html
+ ~~~~~~~~~~~~~~~~~
+
+ Sphinx layout template for the scikit-image theme
+
+#}
+
+{%- set url_root = pathto('', 1) %}
+{# XXX necessary? #}
+{%- if url_root == '#' %}{% set url_root = '' %}{% endif %}
+{%- if not embedded and docstitle %}
+ {%- set titlesuffix = " — "|safe + docstitle|e %}
+{%- else %}
+ {%- set titlesuffix = "" %}
+{%- endif %}
+
+{%- macro script() %}
+ <script src="http://code.jquery.com/jquery-latest.js"></script>
+ <script src="{{ pathto('_static/', 1) }}js/bootstrap.min.js"></script>
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT: '{{ url_root }}',
+ VERSION: '{{ release|e }}',
+ COLLAPSE_INDEX: false,
+ FILE_SUFFIX: '{{ '' if no_search_suffix else file_suffix }}',
+ HAS_SOURCE: {{ has_source|lower }}
+ };
+ </script>
+ {%- for scriptfile in script_files %}
+ <script type="text/javascript" src="{{ pathto(scriptfile, 1) }}"></script>
+ {%- endfor %}
+{%- endmacro %}
+
+{%- macro css() %}
+ <link rel="stylesheet" href="{{ pathto('_static/pygments.css', 1) }}" type="text/css" />
+ <link href="{{ pathto('_static/', 1) }}css/bootstrap.min.css" rel="stylesheet" type="text/css">
+ <link href="{{ pathto('_static/', 1) }}css/custom.css" rel="stylesheet" type="text/css">
+ <link href="http://fonts.googleapis.com/css?family=Raleway" rel="stylesheet" type="text/css">
+ {%- for cssfile in css_files %}
+ <link rel="stylesheet" href="{{ pathto(cssfile, 1) }}" type="text/css" />
+ {%- endfor %}
+{%- endmacro %}
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+ {%- block htmltitle %}
+ <title>{{ title|striptags|e }}{{ titlesuffix }}</title>
+ {%- endblock %}
+ {{ metatags }}
+ {{ css() }}
+ {{ script() }}
+ {%- if hasdoc('about') %}
+ <link rel="author" title="{{ _('About these documents') }}" href="{{ pathto('about') }}" />
+ {%- endif %}
+ {%- if hasdoc('genindex') %}
+ <link rel="index" title="{{ _('Index') }}" href="{{ pathto('genindex') }}" />
+ {%- endif %}
+ {%- if hasdoc('search') %}
+ <link rel="search" title="{{ _('Search') }}" href="{{ pathto('search') }}" />
+ {%- endif %}
+ {%- if hasdoc('copyright') %}
+ <link rel="copyright" title="{{ _('Copyright') }}" href="{{ pathto('copyright') }}" />
+ {%- endif %}
+ <link rel="top" title="{{ docstitle|e }}" href="{{ pathto('index') }}" />
+ {%- if parents %}
+ <link rel="up" title="{{ parents[-1].title|striptags|e }}" href="{{ parents[-1].link|e }}" />
+ {%- endif %}
+ {%- if next %}
+ <link rel="next" title="{{ next.title|striptags|e }}" href="{{ next.link|e }}" />
+ {%- endif %}
+ {%- if prev %}
+ <link rel="prev" title="{{ prev.title|striptags|e }}" href="{{ prev.link|e }}" />
+ {%- endif %}
+ <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
+ <link rel="shortcut icon" href="http://vispy.org/_static/favicon.ico">
+ {%- block extrahead %}{% endblock %}
+</head>
+<body class="container">
+ <a href="http://vispy.org" class="logo"><img src="http://vispy.org/_static/img/logo.png" alt=""></a>
+ <div class="clearfix"></div>
+ <div class="navbar">
+ <div class="navbar-inner">
+ <ul class="nav">
+ {% include 'navbar.html' %}
+ </ul>
+ <form class="navbar-form pull-right" action="search.html" method="get">
+ <input type="text" class="search span3" name="q" placeholder="Search documentation ...">
+ <input type="hidden" name="check_keywords" value="yes" >
+ <input type="hidden" name="area" value="default" >
+ </form>
+ </div>
+ </div>
+ <div class="row">
+ <div class="span9">
+ {% block body %}{% endblock %}
+ </div>
+ <div class="span3">
+ {%- for sidebartemplate in sidebars %}
+ {%- include sidebartemplate %}
+ {%- endfor %}
+ </div>
+ </div>
+ <div class="well footer">
+ <small>
+ © Copyright the vispy development team.
+ Created using <a href="http://twitter.github.com/bootstrap/">Bootstrap</a> and <a href="http://sphinx.pocoo.org/">Sphinx</a>.
+ Theme by <a href="http://scikit-image.org/">scikit-image</a>.
+ </small>
+ </div>
+</body>
+</html>
diff --git a/doc/themes/scikit-image/search.html b/doc/themes/scikit-image/search.html
new file mode 100644
index 0000000..3a723ef
--- /dev/null
+++ b/doc/themes/scikit-image/search.html
@@ -0,0 +1,46 @@
+{#
+ basic/search.html
+ ~~~~~~~~~~~~~~~~~
+
+ Template for the search page.
+
+ :copyright: Copyright 2007-2011 by the Sphinx team, see AUTHORS.
+ :license: BSD, see LICENSE for details.
+#}
+{% extends "layout.html" %}
+{% set title = _('Search') %}
+{% set script_files = script_files + ['_static/searchtools.js'] %}
+{% set script_files = script_files + ['searchindex.js'] %}
+{% block body %}
+ <h1 id="search-documentation">{{ _('Search') }}</h1>
+ <div id="fallback" class="admonition warning">
+ <script type="text/javascript">
+ $('#fallback').hide();
+ $("input.search").focus();
+ </script>
+ <p>
+ {% trans %}Please activate JavaScript to enable the search
+ functionality.{% endtrans %}
+ </p>
+ </div>
+ <p>
+ {% trans %}From here you can search these documents. Enter your search
+ words into the box in the navigation bar and press "Enter". Note that the
+ search function will automatically search for all of the words. Pages
+ containing fewer words won't appear in the result list.{% endtrans %}
+ </p>
+ {% if search_performed %}
+ {% if not search_results %}
+ <p>{{ _('Your search did not match any results.') }}</p>
+ {% endif %}
+ {% endif %}
+ <div id="search-results">
+ {% if search_results %}
+ <ul>
+ {% for href, caption, context in search_results %}
+ <li class="well"><a href="{{ pathto(item.href) }}">{{ caption }}</a></li>
+ {% endfor %}
+ </ul>
+ {% endif %}
+ </div>
+{% endblock %}
\ No newline at end of file
diff --git a/doc/themes/scikit-image/static/css/bootstrap-responsive.min.css b/doc/themes/scikit-image/static/css/bootstrap-responsive.min.css
new file mode 100644
index 0000000..7b0158d
--- /dev/null
+++ b/doc/themes/scikit-image/static/css/bootstrap-responsive.min.css
@@ -0,0 +1,9 @@
+/*!
+ * Bootstrap Responsive v2.1.1
+ *
+ * Copyright 2012 Twitter, Inc
+ * Licensed under the Apache License v2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Designed and built with all the love in the world @twitter by @mdo and @fat.
+ */.clearfix{*zoom:1}.clearfix:before,.clearfix:after{display:table;line-height:0;content:""}.clearfix:after{clear:both}.hide-text{font:0/0 a;color:transparent;text-shadow:none;background-color:transparent;border:0}.input-block-level{display:block;width:100%;min-height:30px;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box}.hidden{display:none;visibility:hidden}.visible-phone{display:none!important}.visible-tablet{display:none!important}.hidden-desktop{displa [...]
diff --git a/doc/themes/scikit-image/static/css/bootstrap.min.css b/doc/themes/scikit-image/static/css/bootstrap.min.css
new file mode 100644
index 0000000..31d8b96
--- /dev/null
+++ b/doc/themes/scikit-image/static/css/bootstrap.min.css
@@ -0,0 +1,9 @@
+/*!
+ * Bootstrap v2.1.1
+ *
+ * Copyright 2012 Twitter, Inc
+ * Licensed under the Apache License v2.0
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Designed and built with all the love in the world @twitter by @mdo and @fat.
+ */article,aside,details,figcaption,figure,footer,header,hgroup,nav,section{display:block}audio,canvas,video{display:inline-block;*display:inline;*zoom:1}audio:not([controls]){display:none}html{font-size:100%;-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}a:focus{outline:thin dotted #333;outline:5px auto -webkit-focus-ring-color;outline-offset:-2px}a:hover,a:active{outline:0}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sup{top:-0.5em}sub{bottom:- [...]
diff --git a/doc/themes/scikit-image/static/css/custom.css b/doc/themes/scikit-image/static/css/custom.css
new file mode 100644
index 0000000..2d64dbb
--- /dev/null
+++ b/doc/themes/scikit-image/static/css/custom.css
@@ -0,0 +1,232 @@
+body {
+ font-family: "Raleway";
+}
+a {
+ color: #CE5C00;
+}
+input,
+button,
+select,
+textarea {
+ font-family: "Raleway";
+}
+pre {
+ font-size: 11px;
+}
+
+h1, h2, h3, h4, h5, h6 {
+ clear: left;
+}
+h1 {
+ font-size: 30px;
+ line-height: 36px;
+}
+h2 {
+ font-size: 24px;
+ line-height: 30px;
+}
+h3 {
+ font-size: 19px;
+ line-height: 21px;
+}
+h4 {
+ font-size: 17px;
+ line-height: 19px;
+}
+h5 {
+ font-size: 15px;
+ line-height: 17px;
+}
+h6 {
+ font-size: 13px;
+ line-height: 15px;
+}
+
+.logo {
+ float: left;
+ margin: 20px 0 20px 22px;
+}
+.logo img {
+ height: 70px;
+}
+
+.hero {
+ padding: 10px 25px 15px 25px;
+}
+
+.gallery-random {
+ float: right;
+ line-height: 180px;
+ margin-left: 10px;
+}
+.gallery-random img {
+ max-height: 180px;
+ max-width: 180px;
+}
+
+.coins-sample {
+ float: left;
+ padding: 5px;
+}
+
+.sidebar-box {
+ padding: 0;
+}
+.sidebar-box-heading {
+ padding-left: 15px;
+}
+
+.headerlink {
+ margin-left: 10px;
+ color: #ddd;
+ display: none;
+}
+h1:hover .headerlink,
+h2:hover .headerlink,
+h3:hover .headerlink,
+h4:hover .headerlink,
+h5:hover .headerlink,
+h6:hover .headerlink {
+ display: inline;
+}
+.headerlink:hover {
+ color: #CE5C00;
+ text-decoration: none;
+}
+
+.footer {
+ margin-top: 30px;
+ padding: 5px 10px;
+ color: #999;
+}
+.footer a {
+ color: #999;
+ text-decoration: underline;
+}
+
+.ohloh-use, .gplus-use {
+ float: left;
+ margin: 0 0 10px 15px;
+}
+
+/* Documentation */
+
+/* general table settings */
+table.docutils {
+ margin-bottom: 10px;
+ border-color: #ccc;
+}
+table.docutils td, table.docutils th {
+ padding: 5px;
+ border-color: #ccc;
+ text-align: left;
+}
+
+.toc ul ul {
+ font-size: 13px;
+ margin-right: -15px;
+}
+
+/* master content table */
+.contentstable.docutils, .contentstable.docutils td {
+ border-color: transparent;
+}
+.contentstable.docutils .first {
+ font-weight: bold;
+}
+.contentstable.docutils .last {
+ padding-left: 10px;
+}
+
+.docutils .label, .docutils .badge {
+ background: transparent;
+ text-shadow: none;
+ font-size: 13px;
+ padding: 5px;
+ line-height: 20px;
+ color: #333;
+}
+
+/* module summary table */
+.longtable.docutils {
+ font-size: 12px;
+ margin-bottom: 30px;
+}
+.longtable.docutils, .longtable.docutils td {
+ border-color: #ccc;
+}
+
+/* function and class description */
+dl.class, dl.function, dl.method, dl.attribute {
+ border-top: 1px solid #ccc;
+ padding-top: 10px;
+}
+.descclassname {
+ color: #aaa;
+ font-weight: normal;
+ font-family: monospace;
+}
+.descname {
+ font-family: monospace;
+}
+dl.class em, dl.function em, dl.class big, dl.function big {
+ font-weight: normal;
+ font-family: monospace;
+}
+dl.class dd, dl.function dd {
+ padding: 10px;
+}
+.docutils.field-list th {
+ background-color: #eee;
+ padding: 10px;
+ text-align: left;
+ vertical-align: top;
+ width: 100px;
+}
+.docutils.field-list td {
+ padding: 10px 10px 10px 20px;
+ text-align: left;
+ vertical-align: top;
+}
+.docutils.field-list td blockquote p {
+ font-size: 13px;
+ line-height: 18px;
+}
+p.rubric {
+ font-weight: bold;
+ font-size: 19px;
+ margin: 15px 0 10px 0;
+}
+p.admonition-title {
+ font-weight: bold;
+ text-decoration: underline;
+}
+
+/* example gallery */
+
+.gallery {
+ height: 200px;
+}
+
+.figure {
+ float: left;
+ margin: 1em;
+}
+
+.figure img {
+ display: block;
+ margin-left: auto;
+ margin-right: auto;
+ max-height: 150px;
+ max-width: 200px;
+}
+
+.figure .caption {
+ width: 200px;
+ text-align: center !important;
+}
+
+.summary-box {
+ /* Should derive width from span8 */
+ width: 640px;
+}
diff --git a/doc/themes/scikit-image/static/img/favicon.ico b/doc/themes/scikit-image/static/img/favicon.ico
new file mode 100644
index 0000000..d7ae601
Binary files /dev/null and b/doc/themes/scikit-image/static/img/favicon.ico differ
diff --git a/doc/themes/scikit-image/static/img/glyphicons-halflings-white.png b/doc/themes/scikit-image/static/img/glyphicons-halflings-white.png
new file mode 100644
index 0000000..3bf6484
Binary files /dev/null and b/doc/themes/scikit-image/static/img/glyphicons-halflings-white.png differ
diff --git a/doc/themes/scikit-image/static/img/glyphicons-halflings.png b/doc/themes/scikit-image/static/img/glyphicons-halflings.png
new file mode 100644
index 0000000..a996999
Binary files /dev/null and b/doc/themes/scikit-image/static/img/glyphicons-halflings.png differ
diff --git a/doc/themes/scikit-image/static/js/bootstrap.min.js b/doc/themes/scikit-image/static/js/bootstrap.min.js
new file mode 100644
index 0000000..0e33fb1
--- /dev/null
+++ b/doc/themes/scikit-image/static/js/bootstrap.min.js
@@ -0,0 +1,6 @@
+/*!
+* Bootstrap.js by @fat & @mdo
+* Copyright 2012 Twitter, Inc.
+* http://www.apache.org/licenses/LICENSE-2.0.txt
+*/
+!function(e){e(function(){"use strict";e.support.transition=function(){var e=function(){var e=document.createElement("bootstrap"),t={WebkitTransition:"webkitTransitionEnd",MozTransition:"transitionend",OTransition:"oTransitionEnd otransitionend",transition:"transitionend"},n;for(n in t)if(e.style[n]!==undefined)return t[n]}();return e&&{end:e}}()})}(window.jQuery),!function(e){"use strict";var t='[data-dismiss="alert"]',n=function(n){e(n).on("click",t,this.close)};n.prototype.close=funct [...]
\ No newline at end of file
diff --git a/doc/themes/scikit-image/static/js/docversions.js b/doc/themes/scikit-image/static/js/docversions.js
new file mode 100644
index 0000000..951ce3e
--- /dev/null
+++ b/doc/themes/scikit-image/static/js/docversions.js
@@ -0,0 +1,21 @@
+var versions = ['latest', 'v0.1.0'];
+
+function insert_version_links() {
+ for (i = 0; i < versions.length; i++){
+ open_list = '<li>'
+ if (typeof(DOCUMENTATION_OPTIONS) !== 'undefined') {
+ if ((DOCUMENTATION_OPTIONS['VERSION'] == versions[i]) ||
+ (DOCUMENTATION_OPTIONS['VERSION'].match(/dev$/) && (i == 0))) {
+ open_list = '<li id="current">'
+ }
+ }
+ document.write(open_list);
+ document.write('<a href="URL">vispy VERSION</a> </li>\n'
+ .replace('VERSION', versions[i])
+ .replace('URL', 'http://api.vispy.org/en/' + versions[i]));
+ }
+}
+
+function stable_version() {
+ return versions[1];
+}
diff --git a/doc/themes/scikit-image/theme.conf b/doc/themes/scikit-image/theme.conf
new file mode 100644
index 0000000..f83ec96
--- /dev/null
+++ b/doc/themes/scikit-image/theme.conf
@@ -0,0 +1,4 @@
+[theme]
+inherit = basic
+stylesheet = none
+pygments_style = default
diff --git a/doc/util.rst b/doc/util.rst
new file mode 100644
index 0000000..93ac41b
--- /dev/null
+++ b/doc/util.rst
@@ -0,0 +1,39 @@
+===============
+The util module
+===============
+
+.. automodule:: vispy.util
+
+
+----
+
+vispy.util.keys
+----------------
+
+Constants for keys like control and alt.
+
+
+----
+
+vispy.util.transforms
+---------------------
+.. automodule:: vispy.util.transforms
+ :members:
+
+
+----
+
+vispy.util.event
+----------------
+
+.. automodule:: vispy.util.event
+
+
+.. autoclass:: vispy.util.event.EventEmitter
+ :members:
+
+ .. automethod:: vispy.util.event.EventEmitter.__call__
+
+
+.. autoclass:: vispy.util.event.EmitterGroup
+ :members:
diff --git a/doc/visuals.rst b/doc/visuals.rst
new file mode 100644
index 0000000..fb7b99c
--- /dev/null
+++ b/doc/visuals.rst
@@ -0,0 +1,8 @@
+Visuals layer
+=============
+
+The visuals layer implements several visuals, object that represent a
+certain kind of visualisation. Examples are lines, markers, images, volumes,
+meshes, barplots, axes, grids, etc.
+
+This layer is planned; it does not exist yet.
diff --git a/examples/app/app-event.py b/examples/app/app-event.py
new file mode 100644
index 0000000..0433c83
--- /dev/null
+++ b/examples/app/app-event.py
@@ -0,0 +1,62 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+This example shows how to retrieve event information from a callback.
+You should see information displayed for any event you triggered.
+"""
+
+import vispy.gloo.gl as gl
+import vispy.app as app
+
+class Canvas(app.Canvas):
+ def __init__(self, *args, **kwargs):
+ app.Canvas.__init__(self, *args, **kwargs)
+ self.title = 'App demo'
+
+ def on_initialize(self, event):
+ print('initializing!')
+
+ def on_close(self, event):
+ print('closing!')
+
+ def on_resize(self, event):
+ print('Resize %r' % (event.size, ))
+
+ def on_key_press(self, event):
+ modifiers = [key.name for key in event.modifiers]
+ print('Key pressed - text: %r, key: %s, modifiers: %r' % (
+ event.text, event.key.name, modifiers))
+
+ def on_key_release(self, event):
+ modifiers = [key.name for key in event.modifiers]
+ print('Key released - text: %r, key: %s, modifiers: %r' % (
+ event.text, event.key.name, modifiers))
+
+ def on_mouse_press(self, event):
+ self.print_mouse_event(event, 'Mouse press')
+
+ def on_mouse_release(self, event):
+ self.print_mouse_event(event, 'Mouse release')
+
+ def on_mouse_move(self, event):
+ if ( event.pos[0] < self.size[0]*0.5
+ and event.pos[1] < self.size[1]*0.5):
+ self.print_mouse_event(event, 'Mouse move')
+
+ def on_mouse_wheel(self, event):
+ self.print_mouse_event(event, 'Mouse wheel')
+
+ def print_mouse_event(self, event, what):
+ modifiers = ', '.join([key.name for key in event.modifiers])
+ print('%s - pos: %r, button: %i, modifiers: %s, delta: %r' %
+ (what, event.pos, event.button, modifiers, event.delta))
+
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+
+if __name__ == '__main__':
+ canvas = Canvas()
+ canvas.show()
+ app.run()
diff --git a/examples/app/app-glut.py b/examples/app/app-glut.py
new file mode 100644
index 0000000..1500082
--- /dev/null
+++ b/examples/app/app-glut.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+This example shows how to actively select and test the glut backend.
+
+You should see a black window and any mouse or keyboard event should be
+detected. A timer is also ran every second and it should print "tick !"
+every second.
+
+Note:
+====
+Depending on on your glut implementation (native or freeglut), the mouse wheel
+event may or may not be detected. Furthermore, glut has no utf-8 support and
+non ascii-key will most likely produces garbage.
+"""
+
+from vispy import app
+from vispy.gloo import gl
+app.use('glut')
+
+class Canvas(app.Canvas):
+ def __init__(self, *args, **kwargs):
+ app.Canvas.__init__(self, *args, **kwargs)
+ timer = app.Timer(1.0)
+ timer.connect(self.on_timer)
+ timer.start()
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1)
+ print('on_initialize')
+
+ def on_close(self, event):
+ print('on_close')
+
+ def on_resize(self, event):
+ print('on_resize (%dx%d)' % event.size)
+
+ def on_key_press(self, event):
+ print('on_key_press: %s' % event.text)
+
+ def on_key_release(self, event):
+ print('on_key_release')
+
+ def on_mouse_press(self, event):
+ print('on_mouse_press: %d' % event.button)
+
+ def on_mouse_release(self, event):
+ print('on_mouse_release')
+ print(event.trail())
+
+ def on_mouse_move(self, event):
+ print('on_mouse_move (%dx%d)' % event.pos)
+
+ def on_mouse_wheel(self, event):
+ print('on_mouse_wheel: %r' % (event.delta,))
+
+ def on_paint(self, event):
+ print('on_paint')
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ def on_timer(self, event):
+ print('tick !')
+
+# -----------------------------------------------------------------------------
+if __name__ == '__main__':
+ canvas = Canvas()
+ canvas.show()
+ app.run()
diff --git a/examples/app/app-pyglet.py b/examples/app/app-pyglet.py
new file mode 100644
index 0000000..bd508bf
--- /dev/null
+++ b/examples/app/app-pyglet.py
@@ -0,0 +1,63 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+This example shows how to actively select and test the pyglet backend.
+
+You should see a black window and any mouse or keyboard event should be
+detected. A timer is also ran every second and it should print "tick !"
+every second.
+"""
+
+from vispy import app
+from vispy.gloo import gl
+app.use('pyglet')
+
+class Canvas(app.Canvas):
+ def __init__(self, *args, **kwargs):
+ app.Canvas.__init__(self, *args, **kwargs)
+ timer = app.Timer(1.0)
+ timer.connect(self.on_timer)
+ timer.start()
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1)
+ print('on_initialize')
+
+ def on_close(self, event):
+ print('on_close')
+
+ def on_resize(self, event):
+ print('on_resize (%dx%d)' % event.size)
+
+ def on_key_press(self, event):
+ print('on_key_press: %s' % event.text)
+
+ def on_key_release(self, event):
+ print('on_key_release')
+
+ def on_mouse_press(self, event):
+ print('on_mouse_press: %d' % event.button)
+
+ def on_mouse_release(self, event):
+ print('on_mouse_release')
+ print(event.trail())
+
+ def on_mouse_move(self, event):
+ print('on_mouse_move (%dx%d)' % event.pos)
+
+ def on_mouse_wheel(self, event):
+ print('on_mouse_wheel: %r' % (event.delta,))
+
+ def on_paint(self, event):
+ print('on_paint')
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+
+ def on_timer(self, event):
+ print('tick !')
+
+# -----------------------------------------------------------------------------
+if __name__ == '__main__':
+ canvas = Canvas()
+ canvas.show()
+ app.run()
diff --git a/examples/app/app-qt.py b/examples/app/app-qt.py
new file mode 100644
index 0000000..983cdee
--- /dev/null
+++ b/examples/app/app-qt.py
@@ -0,0 +1,62 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+This example shows how to actively select and test the qt backend.
+
+You should see a black window and any mouse or keyboard event should be
+detected. A timer is also ran every second and it should print "tick !"
+every second.
+"""
+
+from vispy import app
+from vispy.gloo import gl
+app.use('qt')
+
+class Canvas(app.Canvas):
+ def __init__(self, *args, **kwargs):
+ app.Canvas.__init__(self, *args, **kwargs)
+ timer = app.Timer(1.0)
+ timer.connect(self.on_timer)
+ timer.start()
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1)
+ print('on_initialize')
+
+ def on_close(self, event):
+ print('on_close')
+
+ def on_resize(self, event):
+ print('on_resize (%dx%d)' % event.size)
+
+ def on_key_press(self, event):
+ print('on_key_press: %s' % event.text)
+
+ def on_key_release(self, event):
+ print('on_key_release')
+
+ def on_mouse_press(self, event):
+ print('on_mouse_press: %d' % event.button)
+
+ def on_mouse_release(self, event):
+ print('on_mouse_release')
+ print(event.trail())
+
+ def on_mouse_move(self, event):
+ print('on_mouse_move (%dx%d)' % event.pos)
+
+ def on_mouse_wheel(self, event):
+ print('on_mouse_wheel: %r' % (event.delta,))
+
+ def on_paint(self, event):
+ print('on_paint')
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ def on_timer(self, event):
+ print('tick ! (%s)' % event.dt)
+
+# -----------------------------------------------------------------------------
+if __name__ == '__main__':
+ canvas = Canvas()
+ canvas.show()
+ app.run()
diff --git a/examples/app/simple.py b/examples/app/simple.py
new file mode 100644
index 0000000..2eff1d6
--- /dev/null
+++ b/examples/app/simple.py
@@ -0,0 +1,37 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 20
+
+"""
+This is a very minimal example that opens a window and makes the background
+color to change from black to white to black ...
+
+The backend (one of 'qt', 'glut', 'pyglet') is chosen automatically depending
+on what is available on your machine.
+"""
+
+import math
+from vispy import app
+from vispy.gloo import gl
+
+class Canvas(app.Canvas):
+ def __init__(self, *args, **kwargs):
+ app.Canvas.__init__(self, *args, **kwargs)
+ timer = app.Timer(1/60.0)
+ timer.connect(self.on_timer)
+ timer.start()
+ self.tick = 0
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT)
+
+ def on_timer(self, event):
+ self.tick += 1/60.0
+ c = abs(math.sin(self.tick))
+ gl.glClearColor(c,c,c,1)
+ self.update()
+
+if __name__ == '__main__':
+ canvas = Canvas()
+ canvas.show()
+ app.run()
diff --git a/examples/benchmark/simple-glut.py b/examples/benchmark/simple-glut.py
new file mode 100755
index 0000000..9896145
--- /dev/null
+++ b/examples/benchmark/simple-glut.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team All rights reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+# -----------------------------------------------------------------------------
+import numpy as np
+from vispy.gloo import gl
+
+def on_display():
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ glut.glutSwapBuffers()
+
+def on_keyboard(key, x, y):
+ if key == '\033':
+ sys.exit()
+
+def on_idle():
+ global t, t0, frames
+ t = glut.glutGet( glut.GLUT_ELAPSED_TIME )
+ frames = frames + 1
+ elapsed = (t-t0)/1000.0
+ if elapsed > 2.5:
+ print( "FPS : %.2f (%d frames in %.2f second)"
+ % (frames/elapsed, frames, elapsed))
+ t0, frames = t,0
+ glut.glutPostRedisplay()
+
+
+if __name__ == '__main__':
+ import sys
+ import OpenGL.GLUT as glut
+
+ glut.glutInit(sys.argv)
+ glut.glutInitDisplayMode(glut.GLUT_DOUBLE | glut.GLUT_RGB | glut.GLUT_DEPTH)
+ glut.glutInitWindowSize(512,512)
+ glut.glutCreateWindow("Do nothing benchmark (GLUT)")
+ glut.glutDisplayFunc(on_display)
+ glut.glutKeyboardFunc(on_keyboard)
+
+ t0, frames, t = glut.glutGet(glut.GLUT_ELAPSED_TIME),0,0
+ glut.glutIdleFunc(on_idle)
+ glut.glutMainLoop()
diff --git a/examples/benchmark/simple-vispy.py b/examples/benchmark/simple-vispy.py
new file mode 100755
index 0000000..813a3ed
--- /dev/null
+++ b/examples/benchmark/simple-vispy.py
@@ -0,0 +1,33 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team All rights reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+# -----------------------------------------------------------------------------
+import time
+from vispy import app
+from vispy.gloo import gl
+
+app.use('qt')
+# app.use('glut')
+# app.use('pyglet')
+
+canvas = app.Canvas(size=(512,512), title = "Do nothing benchmark (vispy)")
+
+ at canvas.connect
+def on_paint(event):
+ global t, t0, frames
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ t = time.time()
+ frames = frames + 1
+ elapsed = (t-t0) # seconds
+ if elapsed > 2.5:
+ print( "FPS : %.2f (%d frames in %.2f second)"
+ % (frames/elapsed, frames, elapsed))
+ t0, frames = t,0
+ canvas.update()
+
+t0, frames, t = time.time(),0,0
+canvas.show()
+app.run()
diff --git a/examples/demo/atom.py b/examples/demo/atom.py
new file mode 100644
index 0000000..6f2bb2a
--- /dev/null
+++ b/examples/demo/atom.py
@@ -0,0 +1,192 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 60
+
+"""
+Particles orbiting around a central point (with traces)
+"""
+
+import numpy as np
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+from vispy.util.transforms import perspective, translate, rotate
+
+
+n,p = 250, 50
+T = np.random.uniform(0,2*np.pi,n)
+dT = np.random.uniform(50,100,n)/3000
+position = np.zeros((n,2),dtype=np.float32)
+position[:,0] = np.cos(T)
+position[:,1] = np.sin(T)
+rot = np.random.uniform(0,2*np.pi,(n,4)).astype(np.float32)
+color = np.ones((n,4),dtype=np.float32) * (1,1,1,1)
+u_size = 6
+
+data = np.zeros(n*p, [ ('a_position', np.float32, 2),
+ ('a_color', np.float32, 4),
+ ('a_rot', np.float32, 4)])
+data['a_position'] = np.repeat(position, p, axis=0)
+data['a_color'] = np.repeat(color, p, axis=0)
+data['a_rot'] = np.repeat(rot, p, axis=0)
+
+
+VERT_SHADER = """
+// Uniforms
+// --------
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+uniform float u_size;
+
+// Attributes
+// ----------
+attribute vec2 a_position;
+attribute vec4 a_rot;
+attribute vec4 a_color;
+attribute mat4 a_model;
+
+// Varyings
+// --------
+varying vec4 v_color;
+varying float v_size;
+
+mat4 rotation(vec3 axis, float angle) {
+ axis = normalize(axis);
+ float s = sin(angle);
+ float c = cos(angle);
+ float oc = 1.0 - c;
+ return mat4(oc * axis.x * axis.x + c,
+ oc * axis.x * axis.y - axis.z * s,
+ oc * axis.z * axis.x + axis.y * s,
+ 0.0,
+ oc * axis.x * axis.y + axis.z * s,
+ oc * axis.y * axis.y + c,
+ oc * axis.y * axis.z - axis.x * s,
+ 0.0,
+ oc * axis.z * axis.x - axis.y * s,
+ oc * axis.y * axis.z + axis.x * s,
+ oc * axis.z * axis.z + c,
+ 0.0,
+ 0.0, 0.0, 0.0, 1.0);
+}
+
+void main (void) {
+ v_size = u_size;
+ v_color = a_color;
+
+ mat4 R = rotation(a_rot.xyz, a_rot.w);
+ gl_Position = u_projection * u_view * u_model * R * vec4(a_position, 0.0, 1.0);
+ gl_PointSize = v_size;
+}
+"""
+
+FRAG_SHADER = """
+
+// Varyings
+// ------------------------------------
+varying vec4 v_color;
+varying float v_size;
+
+// Main
+// ------------------------------------
+void main()
+{
+ float d = 2*(length(gl_PointCoord.xy - vec2(0.5,0.5)));
+ gl_FragColor = vec4(v_color.rgb, v_color.a*(1-d));
+}
+"""
+
+
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self, **kwargs):
+
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+ self.translate = 3
+ translate(self.view, 0,0, -self.translate)
+
+ self.vbo = gloo.VertexBuffer(data)
+ self.program.set_vars(self.vbo )
+ self.program['u_model'] = self.model
+ self.program['u_view'] = self.view
+ self.program['u_size'] = u_size
+
+ self.theta = 0
+ self.phi = 0
+ self.index = 0
+
+ self.timer = app.Timer(1.0/400)
+ self.timer.connect(self.on_timer)
+ self.timer.start()
+
+ # Initialize for real
+ app.Canvas.__init__(self, **kwargs)
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1)
+ gl.glDisable(gl.GL_DEPTH_TEST)
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+
+
+ def on_key_press(self,event):
+ if event.text == ' ':
+ if self.timer.running:
+ self.timer.stop()
+ else:
+ self.timer.start()
+
+
+ def on_timer(self,event):
+ self.theta += .017
+ self.phi += .013
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+ self.program['u_model'] = self.model
+ self.update()
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = perspective( 45.0, width/float(height), 1.0, 1000.0 )
+ self.program['u_projection'] = self.projection
+
+
+ def on_mouse_wheel(self, event):
+ global u_size
+
+ self.translate +=event.delta[1]
+ self.translate = max(2,self.translate)
+ self.view = np.eye(4,dtype=np.float32)
+ translate(self.view, 0,0, -self.translate)
+ self.program['u_view'] = self.view
+ self.update()
+
+
+ def on_paint(self, event):
+ global T,dT,p,n
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ T += dT
+ self.index = (self.index+1)%p
+ data['a_position'][self.index::p,0] = np.cos(T)
+ data['a_position'][self.index::p,1] = .5*np.sin(T)
+ data['a_color'][:,3] -= 1.0/p
+ data['a_color'][self.index::p,3] = 1
+ self.vbo.set_data(data)
+ self.program.draw(gl.GL_POINTS)
+
+
+if __name__ == '__main__':
+ c = Canvas(show=True, size=(600,600), title="Atom [zoom with mouse scroll]")
+ #c.show()
+ app.run()
diff --git a/examples/demo/boids.py b/examples/demo/boids.py
new file mode 100644
index 0000000..e9d4367
--- /dev/null
+++ b/examples/demo/boids.py
@@ -0,0 +1,187 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 30
+
+"""
+Demonstration of boids simulation. Boids is an artificial life
+program, developed by Craig Reynolds in 1986, which simulates the
+flocking behaviour of birds.
+Based on code from glumpy by Nicolas Rougier.
+"""
+
+import time
+
+import numpy as np
+from scipy.spatial import cKDTree
+
+from vispy.gloo import gl
+from vispy import gloo
+from vispy import app
+
+# Create boids
+n = 1000
+particles = np.zeros(2+n, [ ('position', 'f4', 3),
+ ('position_1', 'f4', 3),
+ ('position_2', 'f4', 3),
+ ('velocity', 'f4', 3),
+ ('color', 'f4', 4),
+ ('size', 'f4', 1)] )
+boids = particles[2:]
+target = particles[0]
+predator = particles[1]
+
+boids['position'] = np.random.uniform(-0.25, +0.25, (n,3))
+boids['velocity'] = np.random.uniform(-0.00, +0.00, (n,3))
+boids['size'] = 4
+boids['color'] = 1,1,1,1
+
+target['size'] = 16
+target['color'][:] = 1,1,0,1
+predator['size'] = 16
+predator['color'][:] = 1,0,0,1
+target['position'][:] = 0.25, 0.0, 0
+
+VERT_SHADER = """
+attribute vec3 position;
+attribute vec4 color;
+attribute float size;
+
+varying vec4 v_color;
+void main (void) {
+ gl_Position = vec4(position, 1.0);
+ v_color = color;
+ gl_PointSize = size;
+}
+"""
+
+FRAG_SHADER = """
+varying vec4 v_color;
+void main()
+{
+ float x = 2.0*gl_PointCoord.x - 1.0;
+ float y = 2.0*gl_PointCoord.y - 1.0;
+ float a = 1.0 - (x*x + y*y);
+ gl_FragColor = vec4(v_color.rgb, a*v_color.a);
+}
+
+"""
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ # Time
+ self._t = time.time()
+ self._pos = 0.0, 0.0
+ self._button = None
+
+ # Create program
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+
+ # Create vertex buffers
+ self.vbo_position = gloo.VertexBuffer(particles['position'])
+ self.vbo_color = gloo.VertexBuffer(particles['color'])
+ self.vbo_size = gloo.VertexBuffer(particles['size'])
+
+ # Bind vertex buffers
+ self.program['color'] = self.vbo_color
+ self.program['size'] = self.vbo_size
+ self.program['position'] = self.vbo_position
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1);
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+ def on_mouse_press(self, event):
+ self._button = event.button
+ self.on_mouse_move(event)
+
+ def on_mouse_release(self, event):
+ self._button = None
+ self.on_mouse_move(event)
+
+ def on_mouse_move(self, event):
+ if not self._button:
+ return
+ w, h = self.size
+ x, y = event.pos
+ sx = 2*x/float(w) -1.0
+ sy = - (2*y/float(h) -1.0)
+
+ if self._button == 1:
+ target['position'][:] = sx, sy, 0
+ elif self._button == 2:
+ predator['position'][:] = sx, sy, 0
+
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ # Draw
+ self.program.draw(gl.GL_POINTS)
+
+ # Next iteration
+ self._t = self.iteration(time.time() - self._t)
+
+ # Invoke a new draw
+ self.update()
+
+
+ def iteration(self, dt):
+ t = self._t
+
+ t += 0.5*dt
+ #target[...] = np.array([np.sin(t),np.sin(2*t),np.cos(3*t)])*.1
+
+ t += 0.5*dt
+ #predator[...] = np.array([np.sin(t),np.sin(2*t),np.cos(3*t)])*.2
+
+ boids['position_2'] = boids['position_1']
+ boids['position_1'] = boids['position']
+ n = len(boids)
+ P = boids['position']
+ V = boids['velocity']
+
+ # Cohesion: steer to move toward the average position of local flockmates
+ C = -(P - P.sum(axis=0)/n)
+
+ # Alignment: steer towards the average heading of local flockmates
+ A = -(V - V.sum(axis=0)/n)
+
+ # Repulsion: steer to avoid crowding local flockmates
+ D,I = cKDTree(P).query(P,5)
+ M = np.repeat(D < 0.05, 3, axis=1).reshape(n,5,3)
+ Z = np.repeat(P,5,axis=0).reshape(n,5,3)
+ R = -((P[I]-Z)*M).sum(axis=1)
+
+ # Target : Follow target
+ T = target['position'] - P
+
+ # Predator : Move away from predator
+ dP = P - predator['position']
+ D = np.maximum(0, 0.3 - np.sqrt(dP[:,0]**2 +dP[:,1]**2+dP[:,2]**2) )
+ D = np.repeat(D,3,axis=0).reshape(n,3)
+ dP *= D
+
+ #boids['velocity'] += 0.0005*C + 0.01*A + 0.01*R + 0.0005*T + 0.0025*dP
+ boids['velocity'] += 0.0005*C + 0.01*A + 0.01*R + 0.0005*T + 0.025*dP
+ boids['position'] += boids['velocity']
+
+ self.vbo_position.set_data(particles['position'])
+
+ return t
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
+
diff --git a/examples/demo/cloud.py b/examples/demo/cloud.py
new file mode 100644
index 0000000..0c86d6c
--- /dev/null
+++ b/examples/demo/cloud.py
@@ -0,0 +1,303 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 1
+
+"""
+Demonstrating a cloud of points.
+"""
+
+import numpy as np
+
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+from vispy.util.transforms import perspective, translate, rotate
+
+
+# Create vertices
+n = 1000000
+data = np.zeros(n, [ ('a_position', np.float32, 3),
+ ('a_bg_color', np.float32, 4),
+ ('a_fg_color', np.float32, 4),
+ ('a_size', np.float32, 1)])
+data['a_position'] = 0.45 * np.random.randn(n,3)
+data['a_bg_color'] = np.random.uniform(0.85,1.00,(n,4))
+data['a_fg_color'] = 0,0,0,1
+data['a_size'] = np.random.uniform(5,10,n)
+u_linewidth = 1.0
+u_antialias = 1.0
+u_size = 1
+
+
+vert = """
+// Uniforms
+// ------------------------------------
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+uniform float u_linewidth;
+uniform float u_antialias;
+uniform float u_size;
+
+// Attributes
+// ------------------------------------
+attribute vec3 a_position;
+attribute vec4 a_fg_color;
+attribute vec4 a_bg_color;
+attribute float a_size;
+
+// Varyings
+// ------------------------------------
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_size;
+varying float v_linewidth;
+varying float v_antialias;
+
+void main (void) {
+ v_size = a_size * u_size;
+ v_linewidth = u_linewidth;
+ v_antialias = u_antialias;
+ v_fg_color = a_fg_color;
+ v_bg_color = a_bg_color;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
+ gl_PointSize = v_size + 2*(v_linewidth + 1.5*v_antialias);
+}
+"""
+
+frag = """
+// Constants
+// ------------------------------------
+
+
+// Varyings
+// ------------------------------------
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_size;
+varying float v_linewidth;
+varying float v_antialias;
+
+// Functions
+// ------------------------------------
+
+// ----------------
+float disc(vec2 P, float size)
+{
+ float r = length((P.xy - vec2(0.5,0.5))*size);
+ r -= v_size/2;
+ return r;
+}
+
+// ----------------
+float arrow_right(vec2 P, float size)
+{
+ float r1 = abs(P.x -.50)*size + abs(P.y -.5)*size - v_size/2;
+ float r2 = abs(P.x -.25)*size + abs(P.y -.5)*size - v_size/2;
+ float r = max(r1,-r2);
+ return r;
+}
+
+// ----------------
+float ring(vec2 P, float size)
+{
+ float r1 = length((gl_PointCoord.xy - vec2(0.5,0.5))*size) - v_size/2;
+ float r2 = length((gl_PointCoord.xy - vec2(0.5,0.5))*size) - v_size/4;
+ float r = max(r1,-r2);
+ return r;
+}
+
+// ----------------
+float clober(vec2 P, float size)
+{
+ const float PI = 3.14159265358979323846264;
+ const float t1 = -PI/2;
+ const vec2 c1 = 0.2*vec2(cos(t1),sin(t1));
+ const float t2 = t1+2*PI/3;
+ const vec2 c2 = 0.2*vec2(cos(t2),sin(t2));
+ const float t3 = t2+2*PI/3;
+ const vec2 c3 = 0.2*vec2(cos(t3),sin(t3));
+
+ float r1 = length((gl_PointCoord.xy- vec2(0.5,0.5) - c1)*size);
+ r1 -= v_size/3;
+ float r2 = length((gl_PointCoord.xy- vec2(0.5,0.5) - c2)*size);
+ r2 -= v_size/3;
+ float r3 = length((gl_PointCoord.xy- vec2(0.5,0.5) - c3)*size);
+ r3 -= v_size/3;
+ float r = min(min(r1,r2),r3);
+ return r;
+}
+
+// ----------------
+float square(vec2 P, float size)
+{
+ float r = max(abs(gl_PointCoord.x -.5)*size, abs(gl_PointCoord.y -.5)*size);
+ r -= v_size/2;
+ return r;
+}
+
+// ----------------
+float diamond(vec2 P, float size)
+{
+ float r = abs(gl_PointCoord.x -.5)*size + abs(gl_PointCoord.y -.5)*size;
+ r -= v_size/2;
+ return r;
+}
+
+// ----------------
+float vbar(vec2 P, float size)
+{
+ float r1 = max(abs(gl_PointCoord.x -.75)*size, abs(gl_PointCoord.x -.25)*size);
+ float r3 = max(abs(gl_PointCoord.x -.5)*size, abs(gl_PointCoord.y -.5)*size);
+ float r = max(r1,r3);
+ r -= v_size/2;
+ return r;
+}
+
+// ----------------
+float hbar(vec2 P, float size)
+{
+ float r2 = max(abs(gl_PointCoord.y -.75)*size, abs(gl_PointCoord.y -.25)*size);
+ float r3 = max(abs(gl_PointCoord.x -.5)*size, abs(gl_PointCoord.y -.5)*size);
+ float r = max(r2,r3);
+ r -= v_size/2;
+ return r;
+}
+
+// ----------------
+float cross(vec2 P, float size)
+{
+ float r1 = max(abs(gl_PointCoord.x -.75)*size, abs(gl_PointCoord.x -.25)*size);
+ float r2 = max(abs(gl_PointCoord.y -.75)*size, abs(gl_PointCoord.y -.25)*size);
+ float r3 = max(abs(gl_PointCoord.x -.5)*size, abs(gl_PointCoord.y -.5)*size);
+ float r = max(min(r1,r2),r3);
+ r -= v_size/2;
+ return r;
+}
+
+
+// Main
+// ------------------------------------
+void main()
+{
+ float size = v_size +2*(v_linewidth + 1.5*v_antialias);
+ float t = v_linewidth/2.0-v_antialias;
+
+ float r = disc(gl_PointCoord, size);
+ // float r = square(gl_PointCoord, size);
+ // float r = ring(gl_PointCoord, size);
+ // float r = arrow_right(gl_PointCoord, size);
+ // float r = diamond(gl_PointCoord, size);
+ // float r = cross(gl_PointCoord, size);
+ // float r = clober(gl_PointCoord, size);
+ // float r = hbar(gl_PointCoord, size);
+ // float r = vbar(gl_PointCoord, size);
+
+
+ float d = abs(r) - t;
+ if( r > (v_linewidth/2.0+v_antialias))
+ {
+ discard;
+ }
+ else if( d < 0.0 )
+ {
+ gl_FragColor = v_fg_color;
+ }
+ else
+ {
+ float alpha = d/v_antialias;
+ alpha = exp(-alpha*alpha);
+ if (r > 0)
+ gl_FragColor = vec4(v_fg_color.rgb, alpha*v_fg_color.a);
+ else
+ gl_FragColor = mix(v_bg_color, v_fg_color, alpha);
+ }
+}
+"""
+
+
+
+# ------------------------------------------------------------ Canvas class ---
+class Canvas(app.Canvas):
+
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 800, 600
+
+ self.program = gloo.Program(vert,frag)
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+ self.translate = 5
+ translate(self.view, 0,0, -self.translate)
+
+ self.program.set_vars(gloo.VertexBuffer(data))
+ self.program['u_linewidth'] = u_linewidth
+ self.program['u_antialias'] = u_antialias
+ self.program['u_model'] = self.model
+ self.program['u_view'] = self.view
+ self.program['u_size'] = 5/self.translate
+
+ self.theta = 0
+ self.phi = 0
+
+ self.timer = app.Timer(1.0/60)
+ self.timer.connect(self.on_timer)
+ self.timer.start()
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glEnable(gl.GL_DEPTH_TEST)
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+
+
+ def on_key_press(self,event):
+ if event.text == ' ':
+ if self.timer.running:
+ self.timer.stop()
+ else:
+ self.timer.start()
+
+
+ def on_timer(self,event):
+ self.theta += .5
+ self.phi += .5
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+ self.program['u_model'] = self.model
+ self.update()
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = perspective( 45.0, width/float(height), 1.0, 1000.0 )
+ self.program['u_projection'] = self.projection
+
+
+ def on_mouse_wheel(self, event):
+ self.translate +=event.delta[1]
+ self.translate = max(2,self.translate)
+ self.view = np.eye(4,dtype=np.float32)
+ translate(self.view, 0,0, -self.translate)
+
+ self.program['u_view'] = self.view
+ self.program['u_size'] = 5/self.translate
+ self.update()
+
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ self.program.draw(gl.GL_POINTS)
+
+
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/demo/fireworks.py b/examples/demo/fireworks.py
new file mode 100644
index 0000000..b71d676
--- /dev/null
+++ b/examples/demo/fireworks.py
@@ -0,0 +1,150 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 20
+
+"""
+Example demonstrating simulation of fireworks using point sprites.
+(adapted from the "OpenGL ES 2.0 Programming Guide")
+
+This example demonstrates a series of explosions that last one second. The
+visualization during the explosion is highly optimized using a Vertex Buffer
+Object (VBO). After each explosion, vertex data for the next explosion are
+calculated, such that each explostion is unique.
+"""
+
+import time
+import numpy as np
+import vispy
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+
+# Create a texture
+radius = 32
+im1 = np.random.normal(0.8, 0.3, (radius*2+1, radius*2+1))
+
+# Mask it with a disk
+L = np.linspace(-radius, radius, 2 * radius + 1)
+(X, Y) = np.meshgrid(L, L)
+im1 *= np.array((X**2 + Y**2) <= radius * radius, dtype='float32')
+
+# Set number of particles, you should be able to scale this to 100000
+N = 10000
+
+# Create vertex data container
+data = np.zeros(N, [ ('a_lifetime', np.float32, 1),
+ ('a_startPosition', np.float32, 3),
+ ('a_endPosition', np.float32, 3) ])
+
+
+VERT_SHADER = """
+uniform float u_time;
+uniform vec3 u_centerPosition;
+attribute float a_lifetime;
+attribute vec3 a_startPosition;
+attribute vec3 a_endPosition;
+varying float v_lifetime;
+
+void main () {
+ if (u_time <= a_lifetime)
+ {
+ gl_Position.xyz = a_startPosition + (u_time * a_endPosition);
+ gl_Position.xyz += u_centerPosition;
+ gl_Position.y -= 1.0 * u_time * u_time;
+ gl_Position.w = 1.0;
+ }
+ else
+ gl_Position = vec4(-1000, -1000, 0, 0);
+
+ v_lifetime = 1.0 - (u_time / a_lifetime);
+ v_lifetime = clamp(v_lifetime, 0.0, 1.0);
+ gl_PointSize = (v_lifetime * v_lifetime) * 40.0;
+}
+"""
+
+FRAG_SHADER = """
+uniform sampler2D texture1;
+uniform vec4 u_color;
+varying float v_lifetime;
+uniform sampler2D s_texture;
+
+void main()
+{
+ vec4 texColor;
+ texColor = texture2D(s_texture, gl_PointCoord);
+ gl_FragColor = vec4(u_color) * texColor;
+ gl_FragColor.a *= v_lifetime;
+}
+"""
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 800, 600
+
+ # Create program
+ self._program = gloo.Program( VERT_SHADER, FRAG_SHADER)
+ self._program.set_vars(gloo.VertexBuffer(data))
+ self._program['s_texture'] = gloo.Texture2D(im1)
+
+ # Create first explosion
+ self._new_explosion()
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1);
+
+ # Enable blending
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+
+ def on_paint(self, event):
+
+ # Clear
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ # Draw
+ self._program['u_time'] = time.time() - self._starttime
+ self._program.draw(gl.GL_POINTS)
+
+ # Invoke a new draw
+ self.update()
+
+ # New explosion?
+ if time.time() - self._starttime > 1.5:
+ self._new_explosion()
+
+
+ def _new_explosion(self):
+
+ # New centerpos
+ centerpos = np.random.uniform(-0.5, 0.5, (3,))
+ self._program['u_centerPosition'] = centerpos
+
+ # New color, scale alpha with N
+ alpha = 1.0 / N**0.08
+ color = np.random.uniform(0.1, 0.9, (3,))
+
+ self._program['u_color'] = tuple(color)+ (alpha,)
+
+ # Create new vertex data
+ data['a_lifetime'] = np.random.normal(2.0, 0.5, (N,))
+ data['a_startPosition'] = np.random.normal(0.0, 0.2, (N,3))
+ data['a_endPosition'] = np.random.normal(0.0, 1.2, (N,3))
+
+ # Set time to zero
+ self._starttime = time.time()
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/demo/galaxy.py b/examples/demo/galaxy.py
new file mode 100644
index 0000000..a4d68e4
--- /dev/null
+++ b/examples/demo/galaxy.py
@@ -0,0 +1,197 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+Just a very fake galaxy.
+Astronomers and cosmologists will kill me !
+"""
+
+import os
+import numpy as np
+
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+from vispy.util.transforms import perspective, translate, rotate
+
+# Manual galaxy creation
+# (did you really expect a simulation in less than 250 python lines ?)
+def make_arm(n,angle):
+ R = np.linspace(10,450+50*np.random.uniform(.5,1.),n)
+ R += 40*np.random.normal(0,2.,n) * np.linspace(1,.1,n)
+ T = angle+np.linspace(0,2.5*np.pi,n) + np.pi/6*np.random.normal(0,.5,n)
+ S = 8+2*np.abs(np.random.normal(0,1,n))
+ S *= np.linspace(1,.85,n)
+ P = np.zeros((n,3), dtype=np.float32)
+ X, Y, Z = P[:,0],P[:,1],P[:,2]
+ X[...] = R*np.cos(T)
+ Y[...] = R*np.sin(T)*1.1
+ D = np.sqrt(X*X+Y*Y)
+ Z[...] = 8*np.random.normal(0, 2-D/512., n)
+ X += (D*np.random.uniform(0,1,n) > 250)*(.05*D*np.random.uniform(-1,1,n))
+ Y += (D*np.random.uniform(0,1,n) > 250)*(.05*D*np.random.uniform(-1,1,n))
+ Z += (D*np.random.uniform(0,1,n) > 250)*(.05*D*np.random.uniform(-1,1,n))
+ D = (D - D.min())/(D.max() - D.min())
+
+ return P/256,S/2,D
+p = 50000
+n = 3*p
+
+data = np.zeros(n, [('a_position', np.float32, 3),
+ ('a_size', np.float32, 1),
+ ('a_dist', np.float32, 1)])
+for i in range(3):
+ P,S,D = make_arm(p, i * 2*np.pi/3)
+ data['a_dist'][(i+0)*p:(i+1)*p] = D
+ data['a_position'][(i+0)*p:(i+1)*p] = P
+ data['a_size'][(i+0)*p:(i+1)*p] = S
+
+
+
+# Very simple colormap
+cmap = np.array([[255, 124, 0], [255, 163, 76],
+ [255, 192, 130], [255, 214, 173],
+ [255, 232, 212], [246, 238, 237],
+ [237, 240, 253], [217, 228, 255],
+ [202, 219, 255], [191, 212, 255],
+ [182, 206, 255], [174, 202, 255],
+ [168, 198, 255], [162, 195, 255],
+ [158, 192, 255], [155, 189, 255],
+ [151, 187, 255], [148, 185, 255],
+ [145, 183, 255], [143, 182, 255],
+ [141, 181, 255], [140, 179, 255],
+ [139, 179, 255],
+ [137, 177, 255]], dtype=np.uint8).reshape(1,24,3)
+
+
+VERT_SHADER = """
+// Uniforms
+// ------------------------------------
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+uniform float u_size;
+
+
+// Attributes
+// ------------------------------------
+attribute vec3 a_position;
+attribute float a_size;
+attribute float a_dist;
+
+// Varyings
+// ------------------------------------
+varying float v_size;
+varying float v_dist;
+
+void main (void) {
+ v_size = a_size*u_size*.75;
+ v_dist = a_dist;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
+ gl_PointSize = v_size;
+}
+"""
+
+FRAG_SHADER = """
+// Uniforms
+// ------------------------------------
+uniform sampler2D u_colormap;
+
+// Varyings
+// ------------------------------------
+varying float v_size;
+varying float v_dist;
+
+// Main
+// ------------------------------------
+void main()
+{
+ float a = 2*(length(gl_PointCoord.xy - vec2(0.5,0.5)) / sqrt(2.0));
+ vec3 color = texture2D(u_colormap, vec2(v_dist,.5)).rgb;
+ gl_FragColor = vec4(color,(1-a)*.25);
+}
+"""
+
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 800, 600
+ self.title = "A very fake galaxy [mouse scroll to zoom]"
+
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+ self.theta, self.phi = 0,0
+
+ self.translate = 5
+ translate(self.view, 0,0, -self.translate)
+
+ self.program.set_vars(gloo.VertexBuffer(data),
+ u_colormap = gloo.Texture2D(cmap),
+ u_size = 5./self.translate,
+ u_model = self.model,
+ u_view = self.view)
+
+ self.timer = app.Timer(1.0/60)
+ self.timer.connect(self.on_timer)
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1)
+ gl.glDisable(gl.GL_DEPTH_TEST)
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc (gl.GL_SRC_ALPHA, gl.GL_ONE) #_MINUS_SRC_ALPHA)
+ # Start the timer upon initialization.
+ self.timer.start()
+
+
+ def on_key_press(self,event):
+ if event.text == ' ':
+ if self.timer.running:
+ self.timer.stop()
+ else:
+ self.timer.start()
+
+
+ def on_timer(self,event):
+ self.theta += .11
+ self.phi += .13
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+ self.program['u_model'] = self.model
+ self.update()
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = perspective( 45.0, width/float(height), 1.0, 1000.0 )
+ self.program['u_projection'] = self.projection
+
+
+ def on_mouse_wheel(self, event):
+ self.translate +=event.delta[1]
+ self.translate = max(2,self.translate)
+ self.view = np.eye(4,dtype=np.float32)
+ translate(self.view, 0,0, -self.translate)
+ self.program['u_view'] = self.view
+ self.program['u_size'] = 5/self.translate
+ self.update()
+
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ self.program.draw(gl.GL_POINTS)
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/demo/game_of_life.py b/examples/demo/game_of_life.py
new file mode 100644
index 0000000..748d83b
--- /dev/null
+++ b/examples/demo/game_of_life.py
@@ -0,0 +1,156 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 200
+
+"""
+Example demonstrating the Game of Life in shaders.
+See http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life
+This examples uses textures and FBO's.
+"""
+
+import time
+
+import numpy as np
+
+from vispy.gloo import gl
+from vispy import gloo
+from vispy import app
+
+
+# Given initial world state
+init_gun = [1,5, 2,5, 1,6, 2,6,
+ 11,5, 11,6, 11,7, 12,4, 12,8, 13,3, 13,9, 14,3, 14,9, 15,6,
+ 16,4, 16,8, 17,5, 17,6, 17,7, 18,6,
+ 21,3, 21,4, 21,5, 22,3, 22,4, 22,5, 23,2, 23,6, 25,1, 25,2, 25,6, 25,7,
+ 35,3, 35,4, 36,3, 36,4]
+
+# Create texture to initialize the game
+im1 = np.zeros((100,120,3), 'uint8')
+X, Y = np.array(init_gun[::2]), (im1.shape[0]-1)-np.array(init_gun[1::2])
+im1[Y,X] = 255
+
+# Create vertex data
+vertex_data = np.zeros(4, dtype=[ ('a_position', np.float32, 3),
+ ('a_texcoord', np.float32, 2) ])
+vertex_data['a_position'] = np.array([ [-1.0, -1.0, 0.0], [+1.0, -1.0, 0.0],
+ [-1.0, +1.0, 0.0], [+1.0, +1.0, 0.0,]
+ ], np.float32)
+vertex_data['a_texcoord'] = np.array([ [0.0, 0.0], [1.0, 0.0],
+ [0.0, 1.0], [1.0, 1.0] ], np.float32)
+
+
+VERT_SHADER = """ // Life vertex shader
+attribute vec3 a_position;
+attribute vec2 a_texcoord;
+varying vec2 v_texcoord;
+void main (void) {
+ // Calculate position (note that we flip y here)
+ gl_Position = vec4(a_position.x, a_position.y, a_position.z, 1.0);
+ // Pass texture coords
+ v_texcoord = a_texcoord;
+}
+"""
+
+FRAG_SHADER = """ // Life fragment shader
+uniform sampler2D u_texture;
+uniform vec2 u_texsize;
+varying vec2 v_texcoord;
+void main()
+{
+ float dx = 1.0 / u_texsize.x;
+ float dy = 1.0 / u_texsize.y;
+
+ // Count alive neigghbours
+ int count = 0;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(-dx, -dy)).r > 0.0)
+ count += 1;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(-dx, 0.0)).r > 0.0)
+ count += 1;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(-dx, +dy)).r > 0.0)
+ count += 1;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(0.0, -dy)).r > 0.0)
+ count += 1;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(0.0, +dy)).r > 0.0)
+ count += 1;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(+dx, -dy)).r > 0.0)
+ count += 1;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(+dx, 0.0)).r > 0.0)
+ count += 1;
+ if (texture2D(u_texture, v_texcoord.xy+vec2(+dx, +dy)).r > 0.0)
+ count += 1;
+
+ // Calculate if we stay alive or reproduce
+ float am_alive = texture2D(u_texture, v_texcoord.xy).r;
+ float survive = float(count==3) + am_alive*float(count==2);
+ survive = min(survive, 1.0);
+
+ // Set color
+ gl_FragColor = vec4(survive, survive, survive, 1.0);
+}
+"""
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ # Create program
+ self._program = gloo.Program( VERT_SHADER, FRAG_SHADER)
+
+ # Creat FBO
+ self._fbo = gloo.FrameBuffer()
+ self._fbo.attach_depth(gloo.RenderBuffer(im1.shape))
+
+ # Create vbo
+ self._vbo = gloo.VertexBuffer(vertex_data)
+
+ # Create textures
+ self._tex1 = gloo.Texture2D(im1)
+ self._tex2 = gloo.Texture2D(im1.shape)
+ for tex in (self._tex1, self._tex2):
+ tex.set_filter('NEAREST', 'NEAREST')
+
+
+ # Set uniforms and attributes
+ self._program.set_vars(self._vbo)
+ self._program['u_texsize'] = im1.shape[1], im1.shape[0]
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1)
+
+
+ def on_paint(self, event):
+
+ # Set framebuffer input output
+ self._program['u_texture'] = self._tex1
+ self._fbo.attach_color(self._tex2)
+
+ with self._fbo:
+ # Init
+ gl.glViewport(0, 0, im1.shape[1], im1.shape[0])
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ # Draw
+ self._program.draw(gl.GL_TRIANGLE_STRIP)
+
+ # Draw to the normal color buffer (i.e. the screen)
+ self._program['u_texture'] = self._tex2
+ # Init
+ gl.glViewport(0, 0, self.size[0], self.size[1])
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ # Draw
+ self._program.draw(gl.GL_TRIANGLE_STRIP)
+
+ # Prepare for next round
+ self._tex1, self._tex2 = self._tex2, self._tex1
+
+ # Force redraw
+ self.update()
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
+
diff --git a/examples/demo/markers.py b/examples/demo/markers.py
new file mode 100644
index 0000000..f46630f
--- /dev/null
+++ b/examples/demo/markers.py
@@ -0,0 +1,229 @@
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team All rights reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+# -----------------------------------------------------------------------------
+"""
+Marker shader definitions. You need to combine marker_frag with one of the
+available marker function (marker_disc, marker_diamond, ...)
+"""
+
+
+vert = """
+// Uniforms
+// ------------------------------------
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+uniform float u_antialias;
+uniform float u_size;
+
+// Attributes
+// ------------------------------------
+attribute vec3 a_position;
+attribute vec4 a_fg_color;
+attribute vec4 a_bg_color;
+attribute float a_linewidth;
+attribute float a_size;
+
+// Varyings
+// ------------------------------------
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_size;
+varying float v_linewidth;
+varying float v_antialias;
+
+void main (void) {
+ v_size = a_size * u_size;
+ v_linewidth = a_linewidth;
+ v_antialias = u_antialias;
+ v_fg_color = a_fg_color;
+ v_bg_color = a_bg_color;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position*u_size,1.0);
+ gl_PointSize = v_size + 2*(v_linewidth + 1.5*v_antialias);
+}
+"""
+
+
+frag = """
+// Constants
+// ------------------------------------
+
+// Varyings
+// ------------------------------------
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_size;
+varying float v_linewidth;
+varying float v_antialias;
+
+// Functions
+// ------------------------------------
+float marker(vec2 P, float size);
+
+
+// Main
+// ------------------------------------
+void main()
+{
+ float size = v_size +2*(v_linewidth + 1.5*v_antialias);
+ float t = v_linewidth/2.0-v_antialias;
+
+ // The marker function needs to be linked with this shader
+ float r = marker(gl_PointCoord, size);
+
+ float d = abs(r) - t;
+ if( r > (v_linewidth/2.0+v_antialias))
+ {
+ discard;
+ }
+ else if( d < 0.0 )
+ {
+ gl_FragColor = v_fg_color;
+ }
+ else
+ {
+ float alpha = d/v_antialias;
+ alpha = exp(-alpha*alpha);
+ if (r > 0)
+ gl_FragColor = vec4(v_fg_color.rgb, alpha*v_fg_color.a);
+ else
+ gl_FragColor = mix(v_bg_color, v_fg_color, alpha);
+ }
+}
+"""
+
+
+disc = """
+float marker(vec2 P, float size)
+{
+ float r = length((P.xy - vec2(0.5,0.5))*size);
+ r -= v_size/2;
+ return r;
+}
+"""
+
+
+arrow = """
+float marker(vec2 P, float size)
+{
+ float r1 = abs(P.x -.50)*size + abs(P.y -.5)*size - v_size/2;
+ float r2 = abs(P.x -.25)*size + abs(P.y -.5)*size - v_size/2;
+ float r = max(r1,-r2);
+ return r;
+}
+"""
+
+
+ring = """
+float marker(vec2 P, float size)
+{
+ float r1 = length((P.xy - vec2(0.5,0.5))*size) - v_size/2;
+ float r2 = length((P.xy - vec2(0.5,0.5))*size) - v_size/4;
+ float r = max(r1,-r2);
+ return r;
+}
+"""
+
+
+clobber = """
+float marker(vec2 P, float size)
+{
+ const float PI = 3.14159265358979323846264;
+ const float t1 = -PI/2;
+ const vec2 c1 = 0.2*vec2(cos(t1),sin(t1));
+ const float t2 = t1+2*PI/3;
+ const vec2 c2 = 0.2*vec2(cos(t2),sin(t2));
+ const float t3 = t2+2*PI/3;
+ const vec2 c3 = 0.2*vec2(cos(t3),sin(t3));
+
+ float r1 = length((P.xy- vec2(0.5,0.5) - c1)*size);
+ r1 -= v_size/3;
+ float r2 = length((P.xy- vec2(0.5,0.5) - c2)*size);
+ r2 -= v_size/3;
+ float r3 = length((P.xy- vec2(0.5,0.5) - c3)*size);
+ r3 -= v_size/3;
+ float r = min(min(r1,r2),r3);
+ return r;
+}
+"""
+
+
+square = """
+float marker(vec2 P, float size)
+{
+ float r = max(abs(P.x -.5)*size, abs(P.y -.5)*size);
+ r -= v_size/2;
+ return r;
+}
+"""
+
+
+diamond = """
+float marker(vec2 P, float size)
+{
+ float r = abs(P.x -.5)*size + abs(P.y -.5)*size;
+ r -= v_size/2;
+ return r;
+}
+"""
+
+
+vbar = """
+float marker(vec2 P, float size)
+{
+ float r1 = max(abs(P.x - 0.75)*size, abs(P.x - 0.25)*size);
+ float r3 = max(abs(P.x - 0.50)*size, abs(P.y - 0.50)*size);
+ float r = max(r1,r3);
+ r -= v_size/2;
+ return r;
+}
+"""
+
+
+hbar = """
+float marker(vec2 P, float size)
+{
+ float r2 = max(abs(P.y - 0.75)*size, abs(P.y - 0.25)*size);
+ float r3 = max(abs(P.x - 0.50)*size, abs(P.y - 0.50)*size);
+ float r = max(r2,r3);
+ r -= v_size/2;
+ return r;
+}
+"""
+
+
+cross = """
+float marker(vec2 P, float size)
+{
+ float r1 = max(abs(P.x - 0.75)*size, abs(P.x - 0.25)*size);
+ float r2 = max(abs(P.y - 0.75)*size, abs(P.y - 0.25)*size);
+ float r3 = max(abs(P.x - 0.50)*size, abs(P.y - 0.50)*size);
+ float r = max(min(r1,r2),r3);
+ r -= v_size/2;
+ return r;
+}
+"""
+
+tailed_arrow= """
+float marker(vec2 P, float size)
+{
+
+ //arrow_right
+ float r1 = abs(P.x -.50)*size + abs(P.y -.5)*size - v_size/2;
+ float r2 = abs(P.x -.25)*size + abs(P.y -.5)*size - v_size/2;
+ float arrow = max(r1,-r2);
+
+ //hbar
+ float r3 = (abs(P.y-.5)*2+.3)*v_size-v_size/2;
+ float r4 = (P.x -.775)*size;
+ float r6 = abs(P.x -.5)*size-v_size/2;
+ float limit = (P.x -.5)*size + abs(P.y -.5)*size - v_size/2;
+ float hbar = max(limit,max(max(r3,r4),r6));
+
+ return min(arrow,hbar);
+}
+"""
+
+
diff --git a/examples/demo/show-markers.py b/examples/demo/show-markers.py
new file mode 100644
index 0000000..7af8fae
--- /dev/null
+++ b/examples/demo/show-markers.py
@@ -0,0 +1,117 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+
+""" Display markers at different sizes and line thicknessess.
+"""
+
+import os
+import sys
+
+import numpy as np
+from vispy.gloo import gl
+
+from vispy import app
+from vispy.util.transforms import ortho
+from vispy.gloo import Program
+from vispy.gloo import VertexBuffer
+
+sys.path.insert(0, os.path.dirname(__file__))
+import markers
+
+
+n = 540
+data = np.zeros(n, dtype = [ ('a_position', np.float32, 3),
+ ('a_fg_color', np.float32, 4),
+ ('a_bg_color', np.float32, 4),
+ ('a_size', np.float32, 1),
+ ('a_linewidth',np.float32, 1) ])
+data['a_fg_color'] = 0,0,0,1
+data['a_bg_color'] = 1,1,1,1
+data['a_linewidth'] = 1
+u_antialias = 1
+
+radius, theta, dtheta = 255.0, 0.0, 5.5/180.0*np.pi
+for i in range(500):
+ theta += dtheta
+ x = 256 + radius*np.cos(theta)
+ y = 256+32 + radius*np.sin(theta)
+ r = 10.1-i*0.02;
+ radius -= 0.45
+ data['a_position'][i] = x,y,0
+ data['a_size'][i] = 2*r
+
+for i in range(40):
+ r = 4
+ thickness = (i+1)/10.0
+ x = 20+i*12.5 - 2*r
+ y = 16
+ data['a_position'][500+i] = x,y,0
+ data['a_size'][500+i] = 2*r
+ data['a_linewidth'][500+i] = thickness
+
+
+class Canvas(app.Canvas):
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ # This size is used for comparison with agg (via matplotlib)
+ self.size = 512,512+2*32
+ self.title = "Markers demo [press space to change marker]"
+
+ self.vbo = VertexBuffer(data)
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = ortho(0, self.size[0], 0, self.size[1], -1, 1)
+ self.programs = [
+ Program(markers.vert, markers.frag + markers.tailed_arrow),
+ Program(markers.vert, markers.frag + markers.disc),
+ Program(markers.vert, markers.frag + markers.diamond),
+ Program(markers.vert, markers.frag + markers.square),
+ Program(markers.vert, markers.frag + markers.cross),
+ Program(markers.vert, markers.frag + markers.arrow),
+ Program(markers.vert, markers.frag + markers.vbar),
+ Program(markers.vert, markers.frag + markers.hbar),
+ Program(markers.vert, markers.frag + markers.clobber),
+ Program(markers.vert, markers.frag + markers.ring) ]
+
+ for program in self.programs:
+ program.set_vars(self.vbo,
+ u_antialias = u_antialias,
+ u_size = 1,
+ u_model = self.model,
+ u_view = self.view,
+ u_projection = self.projection)
+ self.index = 0
+ self.program = self.programs[self.index]
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glDisable(gl.GL_DEPTH_TEST)
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+
+ def on_key_press(self,event):
+ if event.text == ' ':
+ self.index = (self.index+1) % (len(self.programs))
+ self.program = self.programs[self.index]
+ self.program['u_projection'] = self.projection
+ self.program['u_size'] = self.u_size
+ self.update()
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = ortho( 0, width, 0, height, -100, 100 )
+ self.u_size = width/512.0
+ self.program['u_projection'] = self.projection
+ self.program['u_size'] = self.u_size
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ self.program.draw(gl.GL_POINTS)
+
+if __name__ == '__main__':
+ canvas = Canvas()
+ canvas.show()
+ app.run()
diff --git a/examples/glsl-sandbox-cube.py b/examples/glsl-sandbox-cube.py
new file mode 100644
index 0000000..28a77da
--- /dev/null
+++ b/examples/glsl-sandbox-cube.py
@@ -0,0 +1,184 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+A GLSL sandbox application based on the spinning cube. Requires PySide
+or PyQt4.
+"""
+
+import numpy as np
+from vispy import app, gloo, dataio
+from vispy.util.transforms import perspective, translate, rotate
+from vispy.gloo import gl
+
+# Force using qt and take QtCore+QtGui from backend module,
+# since we do not know whether PySide or PyQt4 is used
+app.use('qt')
+QtCore = app.default_app.backend_module.QtCore,
+QtGui = app.default_app.backend_module.QtGui
+
+
+VERT_CODE = """
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+
+attribute vec3 a_position;
+attribute vec2 a_texcoord;
+
+varying vec2 v_texcoord;
+
+void main()
+{
+ v_texcoord = a_texcoord;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
+ //gl_Position = vec4(a_position,1.0);
+
+}
+"""
+
+
+FRAG_CODE = """
+uniform sampler2D u_texture;
+varying vec2 v_texcoord;
+
+void main()
+{
+ float ty = v_texcoord.y;
+ float tx = sin(ty*50.0)*0.01 + v_texcoord.x;
+ gl_FragColor = texture2D(u_texture, vec2(tx, ty));
+}
+"""
+
+
+# Read cube data
+positions, faces, normals, texcoords = dataio.read_mesh('cube.obj')
+colors = np.random.uniform(0,1,positions.shape).astype('float32')
+
+faces_buffer = gloo.ElementBuffer(faces.astype(np.uint16))
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self, **kwargs):
+ app.Canvas.__init__(self, **kwargs)
+ self.geometry = 0, 0, 400, 400
+
+ self.program = gloo.Program(VERT_CODE, FRAG_CODE)
+
+ # Set attributes
+ self.program['a_position'] = gloo.VertexBuffer(positions)
+ self.program['a_texcoord'] = gloo.VertexBuffer(texcoords)
+
+ self.program['u_texture'] = gloo.Texture2D(dataio.crate())
+
+ # Handle transformations
+ self.init_transforms()
+
+ self.timer = app.Timer(1.0/60)
+ self.timer.connect(self.update_transforms)
+ self.timer.start()
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glEnable(gl.GL_DEPTH_TEST)
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = perspective( 45.0, width/float(height), 2.0, 10.0 )
+ self.program['u_projection'] = self.projection
+
+
+ def on_paint(self, event):
+
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ self.program.draw(gl.GL_TRIANGLES, faces_buffer)
+
+
+ def init_transforms(self):
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+
+ self.theta = 0
+ self.phi = 0
+
+ translate(self.view, 0,0,-5)
+ self.program['u_model'] = self.model
+ self.program['u_view'] = self.view
+
+
+ def update_transforms(self,event):
+ self.theta += .5
+ self.phi += .5
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+ self.program['u_model'] = self.model
+ self.update()
+
+
+
+class TextField(QtGui.QPlainTextEdit):
+ def __init__(self, parent):
+ QtGui.QPlainTextEdit.__init__(self, parent)
+ # Set font to monospaced (TypeWriter)
+ font = QtGui.QFont('')
+ font.setStyleHint(font.TypeWriter, font.PreferDefault)
+ font.setPointSize(8)
+ self.setFont(font)
+
+
+
+class MainWindow(QtGui.QWidget):
+ def __init__(self):
+ QtGui.QWidget.__init__(self, None)
+
+ self.setMinimumSize(600, 400)
+
+ # Create two labels and a button
+ self.vertLabel = QtGui.QLabel("Vertex code", self)
+ self.fragLabel = QtGui.QLabel("Fragment code", self)
+ self.theButton = QtGui.QPushButton("Compile!", self)
+ self.theButton.clicked.connect(self.on_compile)
+
+ # Create two editors
+ self.vertEdit = TextField(self)
+ self.vertEdit.setPlainText(VERT_CODE)
+ self.fragEdit = TextField(self)
+ self.fragEdit.setPlainText(FRAG_CODE)
+
+ # Create a canvas
+ self.canvas = Canvas()
+ self.canvas.create_native()
+ self.canvas.native.setParent(self)
+
+ # Layout
+ hlayout = QtGui.QHBoxLayout(self)
+ self.setLayout(hlayout)
+ vlayout = QtGui.QVBoxLayout()
+ #
+ hlayout.addLayout(vlayout, 1)
+ hlayout.addWidget(self.canvas.native, 1)
+ #
+ vlayout.addWidget(self.vertLabel, 0)
+ vlayout.addWidget(self.vertEdit, 1)
+ vlayout.addWidget(self.fragLabel, 0)
+ vlayout.addWidget(self.fragEdit, 1)
+ vlayout.addWidget(self.theButton, 0)
+
+
+ def on_compile(self):
+ vert_code = str(self.vertEdit.toPlainText())
+ frag_code = str(self.fragEdit.toPlainText())
+ self.canvas.program.shaders[0].set_code(vert_code)
+ self.canvas.program.shaders[1].set_code(frag_code)
+
+
+if __name__ == '__main__':
+ app.create()
+ m = MainWindow()
+ m.show()
+ app.run()
diff --git a/examples/howto/animate-images.py b/examples/howto/animate-images.py
new file mode 100644
index 0000000..9c9df67
--- /dev/null
+++ b/examples/howto/animate-images.py
@@ -0,0 +1,117 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+"""
+Example demonstrating showing a, image with a fixed ratio.
+"""
+
+import time
+import numpy as np
+
+from vispy.util.transforms import ortho
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+
+
+# Image to be displayed
+W,H = 64,48
+I = np.random.uniform(0,1,(W,H)).astype(np.float32)
+
+# A simple texture quad
+data = np.zeros(4, dtype=[ ('a_position', np.float32, 2),
+ ('a_texcoord', np.float32, 2) ])
+data['a_position'] = np.array([[0, 0], [W, 0], [0, H], [W, H]])
+data['a_texcoord'] = np.array([[0, 0], [0, 1], [1, 0], [1, 1]])
+
+
+VERT_SHADER = """
+// Uniforms
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+uniform float u_antialias;
+
+// Attributes
+attribute vec2 a_position;
+attribute vec2 a_texcoord;
+
+// Varyings
+varying vec2 v_texcoord;
+
+// Main
+void main (void)
+{
+ v_texcoord = a_texcoord;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,0.0,1.0);
+}
+"""
+
+FRAG_SHADER = """
+uniform sampler2D u_texture;
+varying vec2 v_texcoord;
+void main()
+{
+ gl_FragColor = texture2D(u_texture, v_texcoord);
+ gl_FragColor.a = 1.0;
+}
+
+"""
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = W*5,H*5
+
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+ self.texture = gloo.Texture2D(I)
+ self.texture.set_filter(gl.GL_NEAREST, gl.GL_NEAREST)
+
+ self.program['u_texture'] = self.texture
+ self.program.set_vars(gloo.VertexBuffer(data))
+
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+
+ self.program['u_model'] = self.model
+ self.program['u_view'] = self.view
+ self.projection = ortho(0, W, 0, H, -1, 1)
+ self.program['u_projection'] = self.projection
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = ortho( 0, width, 0, height, -100, 100 )
+ self.program['u_projection'] = self.projection
+
+ # Compute thje new size of the quad
+ r = width/float(height)
+ R = W/float(H)
+ if r < R:
+ w,h = width, width/R
+ x,y = 0, int((height-h)/2)
+ else:
+ w,h = height*R, height
+ x,y = int((width-w)/2), 0
+ data['a_position'] = np.array([[x, y], [x+w, y], [x, y+h], [x+w, y+h]])
+ self.program.set_vars(gloo.VertexBuffer(data))
+
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ I[...] = np.random.uniform(0,1,(W,H)).astype(np.float32)
+ self.texture.set_data(I)
+ self.program.draw(gl.GL_TRIANGLE_STRIP)
+ self.update()
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/howto/animate-shape.py b/examples/howto/animate-shape.py
new file mode 100644
index 0000000..de7ff78
--- /dev/null
+++ b/examples/howto/animate-shape.py
@@ -0,0 +1,114 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 3
+
+"""
+Example demonstrating showing a quad. Like hello_quad1.py, but now
+with Texture2D and VertexBuffer, and optionally using an ElementBuffer to
+draw the vertices.
+"""
+
+import time
+import numpy as np
+
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+
+
+# Create a texture
+im1 = np.zeros((100,100,3), 'float64')
+im1[:50,:,0] = 1.0
+im1[:,:50,1] = 1.0
+im1[50:,50:,2] = 1.0
+
+# Create vetices and texture coords, combined in one array for high performance
+vertex_data = np.zeros(4, dtype=[ ('a_position', np.float32, 3),
+ ('a_texcoord', np.float32, 2) ])
+vertex_data['a_position'] = np.array([ [-0.8, -0.8, 0.0], [+0.7, -0.7, 0.0],
+ [-0.7, +0.7, 0.0], [+0.8, +0.8, 0.0,] ])
+vertex_data['a_texcoord'] = np.array([ [0.0, 0.0], [0.0, 1.0],
+ [1.0, 0.0], [1.0, 1.0] ])
+
+# Create indices and an ElementBuffer for it
+indices = np.array([0,1,2, 1,2,3], np.uint16)
+indices_buffer = gloo.ElementBuffer(indices)
+client_indices_buffer = gloo.ElementBuffer(indices, client=True)
+
+
+VERT_SHADER = """ // simple vertex shader
+
+attribute vec3 a_position;
+attribute vec2 a_texcoord;
+uniform float sizeFactor;
+//attribute float sizeFactor;
+
+void main (void) {
+ // Pass tex coords
+ gl_TexCoord[0] = vec4(a_texcoord.x, a_texcoord.y, 0.0, 0.0);
+ // Calculate position
+ gl_Position = sizeFactor*vec4(a_position.x, a_position.y, a_position.z,
+ 1.0/sizeFactor);
+}
+"""
+
+FRAG_SHADER = """ // simple fragment shader
+uniform sampler2D texture1;
+
+void main()
+{
+ gl_FragColor = texture2D(texture1, gl_TexCoord[0].st);
+}
+
+"""
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ # Create program
+ self._program = gloo.Program( VERT_SHADER, FRAG_SHADER)
+
+ # Create vertex buffer
+ self._vbo = gloo.VertexBuffer(vertex_data)
+
+ # Set uniforms, samplers, attributes
+ # We create one VBO with all vertex data (array of structures)
+ # and create two views from it for the attributes.
+ self._program['texture1'] = gloo.Texture2D(im1)
+ self._program.set_vars(self._vbo) # This does:
+ #self._program['a_position'] = self._vbo['a_position']
+ #self._program['a_texcoords'] = self._vbo['a_texcoords']
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+
+ def on_paint(self, event):
+
+ # Clear
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ # Draw
+ self._program['sizeFactor'] = 0.5 + np.sin(time.time()*3)*0.2
+
+ # Draw (pick one!)
+ #self._program.draw(gl.GL_TRIANGLE_STRIP)
+ self._program.draw(gl.GL_TRIANGLES, indices_buffer)
+ #self._program.draw(gl.GL_TRIANGLES, client_indices_buffer) # Not recommended
+
+ self.update()
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/howto/client-buffers.py b/examples/howto/client-buffers.py
new file mode 100644
index 0000000..1efd888
--- /dev/null
+++ b/examples/howto/client-buffers.py
@@ -0,0 +1,187 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# This code of this example should be considered public domain.
+
+"""
+This is the boids demo coded using a client buffer. This means that
+the data is *not* stored on the GPU in a vertex buffer object, but
+instead send to the GPU on each draw.
+
+Note that in general you should avoid client buffers and use
+vertex buffers. This is example just demonstrates the technique.
+
+In this particular example the attribute data is updated on each draw,
+so the performance of both methods should be more or less similar.
+
+The main difference is that one should use the ``client=True`` keyword
+argument when creating a VertexBuffer or ElementBuffer.
+
+"""
+
+import time
+import numpy as np
+from scipy.spatial import cKDTree
+
+from vispy.gloo import gl
+from vispy import app
+from vispy.gloo import Program, VertexBuffer, ElementBuffer
+
+
+# Create boids
+n = 1000
+particles = np.zeros(2+n, [ ('position', 'f4', 3),
+ ('position_1', 'f4', 3),
+ ('position_2', 'f4', 3),
+ ('velocity', 'f4', 3),
+ ('color', 'f4', 4),
+ ('size', 'f4', 1)] )
+boids = particles[2:]
+target = particles[0]
+predator = particles[1]
+
+boids['position'] = np.random.uniform(-0.25, +0.25, (n,3))
+boids['velocity'] = np.random.uniform(-0.00, +0.00, (n,3))
+boids['size'] = 4
+boids['color'] = 1,1,1,1
+
+target['size'] = 16
+target['color'][:] = 1,1,0,1
+predator['size'] = 16
+predator['color'][:] = 1,0,0,1
+
+
+VERT_SHADER = """
+attribute vec3 position;
+attribute vec4 color;
+attribute float size;
+
+varying vec4 v_color;
+void main (void) {
+ gl_Position = vec4(position, 1.0);
+ v_color = color;
+ gl_PointSize = size;
+}
+"""
+
+FRAG_SHADER = """
+varying vec4 v_color;
+void main()
+{
+ float x = 2.0*gl_PointCoord.x - 1.0;
+ float y = 2.0*gl_PointCoord.y - 1.0;
+ float a = 1.0 - (x*x + y*y);
+ gl_FragColor = vec4(v_color.rgb, a*v_color.a);
+}
+
+"""
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ # Time
+ self._t = time.time()
+ self._pos = 0.0, 0.0
+ self._button = None
+
+ # Create program
+ self.program = Program(VERT_SHADER, FRAG_SHADER)
+ self.program['color'] = VertexBuffer(particles['color'], client=True)
+ self.program['size'] = VertexBuffer(particles['size'], client=True)
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1);
+
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+ def on_mouse_press(self, event):
+ self._button = event.button
+ self.on_mouse_move(event)
+
+ def on_mouse_release(self, event):
+ self._button = None
+ self.on_mouse_move(event)
+
+ def on_mouse_move(self, event):
+ if not self._button:
+ return
+ w, h = self.size
+ x, y = event.pos
+ sx = 2*x/float(w) -1.0
+ sy = - (2*y/float(h) -1.0)
+
+ if self._button == 1:
+ target['position'][:] = sx, sy, 0
+ elif self._button == 2:
+ predator['position'][:] = sx, sy, 0
+
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ # Draw
+ self.program['position'] = VertexBuffer(particles['position'], client=True)
+ self.program.draw(gl.GL_POINTS)
+
+ # Next iteration
+ self._t = self.iteration(time.time() - self._t)
+
+ # Invoke a new draw
+ self.update()
+
+
+ def iteration(self, dt):
+ t = self._t
+
+ t += 0.5*dt
+ #target[...] = np.array([np.sin(t),np.sin(2*t),np.cos(3*t)])*.1
+
+ t += 0.5*dt
+ #predator[...] = np.array([np.sin(t),np.sin(2*t),np.cos(3*t)])*.2
+
+ boids['position_2'] = boids['position_1']
+ boids['position_1'] = boids['position']
+ n = len(boids)
+ P = boids['position']
+ V = boids['velocity']
+
+ # Cohesion: steer to move toward the average position of local flockmates
+ C = -(P - P.sum(axis=0)/n)
+
+ # Alignment: steer towards the average heading of local flockmates
+ A = -(V - V.sum(axis=0)/n)
+
+ # Repulsion: steer to avoid crowding local flockmates
+ D,I = cKDTree(P).query(P,5)
+ M = np.repeat(D < 0.05, 3, axis=1).reshape(n,5,3)
+ Z = np.repeat(P,5,axis=0).reshape(n,5,3)
+ R = -((P[I]-Z)*M).sum(axis=1)
+
+ # Target : Follow target
+ T = target['position'] - P
+
+ # Predator : Move away from predator
+ dP = P - predator['position']
+ D = np.maximum(0, 0.3 - np.sqrt(dP[:,0]**2 +dP[:,1]**2+dP[:,2]**2) )
+ D = np.repeat(D,3,axis=0).reshape(n,3)
+ dP *= D
+
+ #boids['velocity'] += 0.0005*C + 0.01*A + 0.01*R + 0.0005*T + 0.0025*dP
+ boids['velocity'] += 0.0005*C + 0.01*A + 0.01*R + 0.0005*T + 0.025*dP
+ boids['position'] += boids['velocity']
+
+ return t
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
+
diff --git a/examples/howto/display-lines.py b/examples/howto/display-lines.py
new file mode 100644
index 0000000..93fc28a
--- /dev/null
+++ b/examples/howto/display-lines.py
@@ -0,0 +1,138 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+
+""" Show a bunch of lines.
+This example demonstrates how multiple line-pieces can be drawn
+using one call, by discarting some fragments.
+"""
+
+import numpy as np
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+from vispy.util.transforms import perspective, translate, rotate
+
+#app.use('glut')
+
+# Create vetices
+n = 100
+a_position = np.random.uniform(-1,1,(n,3)).astype(np.float32)
+a_id = np.random.randint(0,30,(n,1))
+a_id = np.sort(a_id,axis=0).astype(np.float32)
+
+
+VERT_SHADER = """
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+attribute vec3 a_position;
+attribute float a_id;
+varying float v_id;
+void main (void) {
+ v_id = a_id;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
+}
+"""
+
+FRAG_SHADER = """
+varying float v_id;
+void main()
+{
+ float f = fract(v_id);
+ // The second useless test is needed on OSX 10.8 (fuck)
+ if( (f > 0.0001) && (f < .9999f) )
+ discard;
+ else
+ gl_FragColor = vec4(0,0,0,1);
+}
+"""
+
+
+
+class Canvas(app.Canvas):
+
+ # ---------------------------------
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+
+ # Set uniform and attribute
+ self.program['a_id'] = gloo.VertexBuffer(a_id)
+ self.program['a_position'] = gloo.VertexBuffer(a_position)
+
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+
+ self.translate = 5
+ translate(self.view, 0,0, -self.translate)
+ self.program['u_model'] = self.model
+ self.program['u_view'] = self.view
+
+ self.theta = 0
+ self.phi = 0
+
+ self.timer = app.Timer(1.0/60)
+ self.timer.connect(self.on_timer)
+ #self.timer.start()
+
+
+
+ # ---------------------------------
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glEnable(gl.GL_DEPTH_TEST)
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+
+
+ # ---------------------------------
+ def on_key_press(self,event):
+ if event.text == ' ':
+ if self.timer.running:
+ self.timer.stop()
+ else:
+ self.timer.start()
+
+
+ # ---------------------------------
+ def on_timer(self,event):
+ self.theta += .5
+ self.phi += .5
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+ self.program['u_model'] = self.model
+ self.update()
+
+
+ # ---------------------------------
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = perspective( 45.0, width/float(height), 1.0, 1000.0 )
+ self.program['u_projection'] = self.projection
+
+
+ # ---------------------------------
+ def on_mouse_wheel(self, event):
+ self.translate +=event.delta[1]
+ self.translate = max(2,self.translate)
+ self.view = np.eye(4,dtype=np.float32)
+ translate(self.view, 0,0, -self.translate)
+ self.program['u_view'] = self.view
+ self.update()
+
+
+ # ---------------------------------
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ self.program.draw(gl.GL_LINE_STRIP)
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/howto/display-points.py b/examples/howto/display-points.py
new file mode 100644
index 0000000..13ecfe7
--- /dev/null
+++ b/examples/howto/display-points.py
@@ -0,0 +1,104 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+
+""" Simple example plotting 2D points.
+"""
+
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+import numpy as np
+
+# Create vetices
+n = 10000
+v_position = 0.25 * np.random.randn(n, 2).astype(np.float32)
+v_color = np.random.uniform(0,1,(n,3)).astype(np.float32)
+v_size = np.random.uniform(2,12,(n,1)).astype(np.float32)
+
+VERT_SHADER = """
+attribute vec3 a_position;
+attribute vec3 a_color;
+attribute float a_size;
+
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_radius;
+varying float v_linewidth;
+varying float v_antialias;
+
+void main (void) {
+ v_radius = a_size;
+ v_linewidth = 1.0;
+ v_antialias = 1.0;
+ v_fg_color = vec4(0.0,0.0,0.0,0.5);
+ v_bg_color = vec4(a_color, 1.0);
+
+ gl_Position = vec4(a_position, 1.0);
+ gl_PointSize = 2.0*(v_radius + v_linewidth + 1.5*v_antialias);
+}
+"""
+
+FRAG_SHADER = """
+varying vec4 v_fg_color;
+varying vec4 v_bg_color;
+varying float v_radius;
+varying float v_linewidth;
+varying float v_antialias;
+void main()
+{
+ float size = 2*(v_radius + v_linewidth + 1.5*v_antialias);
+ float t = v_linewidth/2.0-v_antialias;
+ float r = length((gl_PointCoord.xy - vec2(0.5,0.5))*size);
+ float d = abs(r - v_radius) - t;
+ if( d < 0.0 )
+ gl_FragColor = v_fg_color;
+ else
+ {
+ float alpha = d/v_antialias;
+ alpha = exp(-alpha*alpha);
+ if (r > v_radius)
+ gl_FragColor = vec4(v_fg_color.rgb, alpha*v_fg_color.a);
+ else
+ gl_FragColor = mix(v_bg_color, v_fg_color, alpha);
+ }
+}
+"""
+
+
+
+class Canvas(app.Canvas):
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+
+ # Set uniform and attribute
+ self.program['a_color'] = gloo.VertexBuffer(v_color)
+ self.program['a_position'] = gloo.VertexBuffer(v_position)
+ self.program['a_size'] = gloo.VertexBuffer(v_size)
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA)
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+
+ def on_paint(self, event):
+ # Clear
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ # Draw
+ self.program.draw(gl.GL_POINTS)
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/howto/display-shape.py b/examples/howto/display-shape.py
new file mode 100644
index 0000000..e3c0060
--- /dev/null
+++ b/examples/howto/display-shape.py
@@ -0,0 +1,66 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+
+"""
+Simple example demonstrating showing a quad.
+gloo objects that this example demonstrates: Program.
+"""
+
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+import numpy as np
+
+# Create vetices
+vPosition = np.array([ [-0.8, -0.8, 0.0], [+0.7, -0.7, 0.0],
+ [-0.7, +0.7, 0.0], [+0.8, +0.8, 0.0,] ], np.float32)
+
+
+VERT_SHADER = """ // simple vertex shader
+attribute vec3 a_position;
+void main (void) {
+ gl_Position = vec4(a_position, 1.0);
+}
+"""
+
+FRAG_SHADER = """ // simple fragment shader
+uniform vec4 u_color;
+void main()
+{
+ gl_FragColor = u_color;
+}
+"""
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ # Create program
+ self._program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+
+ # Set uniform and attribute
+ self._program['u_color'] = 0.2, 1.0, 0.4, 1
+ self._program['a_position'] = gloo.VertexBuffer(vPosition)
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ self._program.draw(gl.GL_TRIANGLE_STRIP)
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/howto/hello-fbo.py b/examples/howto/hello-fbo.py
new file mode 100644
index 0000000..557bdf5
--- /dev/null
+++ b/examples/howto/hello-fbo.py
@@ -0,0 +1,130 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 3
+
+"""
+Minimal example demonstrating the use of frame buffer objects (FBO).
+This example blurs the output image.
+"""
+
+
+from vispy import gloo
+from vispy import app
+from vispy.gloo import gl
+import numpy as np
+
+# Create vetices
+vPosition = np.array([ [-0.8, -0.8, 0.0], [+0.7, -0.7, 0.0],
+ [-0.7, +0.7, 0.0], [+0.8, +0.8, 0.0,] ], np.float32)
+vPosition_full = np.array([ [-1.0, -1.0, 0.0], [+1.0, -1.0, 0.0],
+ [-1.0, +1.0, 0.0], [+1.0, +1.0, 0.0,] ], np.float32)
+vTexcoord = np.array([ [0.0, 0.0], [0.0, 1.0],
+ [1.0, 0.0], [1.0, 1.0] ], np.float32)
+
+# For initial quad
+VERT_SHADER1 = """
+attribute vec3 a_position;
+void main (void) {
+ gl_Position = vec4(a_position, 1.0);
+}
+"""
+
+FRAG_SHADER1 = """
+uniform vec4 u_color;
+void main()
+{
+ gl_FragColor = u_color;
+}
+"""
+
+# To render the result of the FBO
+VERT_SHADER2 = """
+attribute vec3 a_position;
+attribute vec2 a_texcoord;
+varying vec2 v_texcoord;
+void main (void) {
+ // Pass tex coords
+ v_texcoord = a_texcoord;
+ // Calculate position
+ gl_Position = vec4(a_position.x, a_position.y, a_position.z, 1.0);
+}
+"""
+
+FRAG_SHADER2 = """
+uniform sampler2D u_texture1;
+varying vec2 v_texcoord;
+const float c_zero = 0.0;
+const int c_sze = 5;
+void main()
+{
+ float scalefactor = 1.0 / (c_sze * c_sze * 4 + 1);
+ gl_FragColor = vec4(c_zero, c_zero, c_zero, 1.0);
+ for (int y=-c_sze; y<=c_sze; y++) {
+ for (int x=-c_sze; x<=c_sze; x++) {
+ vec2 step = vec2(x,y) * 0.01;
+ vec3 color = texture2D(u_texture1, v_texcoord.st+step).rgb;
+ gl_FragColor.rgb += color * scalefactor;
+ }
+ }
+}
+"""
+
+
+SIZE = 50
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 560, 420
+
+ # Create texture to render to
+ self._rendertex = gloo.Texture2D()
+
+ # Create FBO, attach the color buffer and depth buffer
+ self._fbo = gloo.FrameBuffer(self._rendertex, gloo.RenderBuffer())
+
+ # Create program to render a shape
+ self._program1 = gloo.Program( gloo.VertexShader(VERT_SHADER1),
+ gloo.FragmentShader(FRAG_SHADER1) )
+ self._program1['u_color'] = 0.9, 1.0, 0.4, 1
+ self._program1['a_position'] = gloo.VertexBuffer(vPosition)
+
+ # Create program to render FBO result
+ self._program2 = gloo.Program( gloo.VertexShader(VERT_SHADER2),
+ gloo.FragmentShader(FRAG_SHADER2) )
+ self._program2['a_position'] = gloo.VertexBuffer(vPosition)
+ self._program2['a_texcoord'] = gloo.VertexBuffer(vTexcoord)
+ self._program2['u_texture1'] = self._rendertex
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+
+ def on_paint(self, event):
+
+ # Set geometry (is no-op if the size does not change)
+ self._fbo.set_size(*self.size)
+
+ # Draw the same scene as as in hello_quad.py, but draw it to the FBO
+ with self._fbo:
+ # Init
+ gl.glClearColor(0,0.0,0.5,1);
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ # Draw
+ self._program1.draw(gl.GL_TRIANGLE_STRIP)
+
+ # Now draw result to a full-screen quad
+ # Init
+ gl.glClearColor(1,1,1,1);
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+ # Draw
+ self._program2.draw(gl.GL_TRIANGLE_STRIP)
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/howto/rotate-cube.py b/examples/howto/rotate-cube.py
new file mode 100644
index 0000000..92c51cd
--- /dev/null
+++ b/examples/howto/rotate-cube.py
@@ -0,0 +1,173 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 50
+"""
+This example shows how to display 3D objects.
+You should see a colored outlined spinning cube.
+"""
+
+import numpy as np
+from vispy import app, gloo
+from vispy.gloo import gl
+from vispy.util.transforms import perspective, translate, rotate
+
+
+vert = """
+// Uniforms
+// ------------------------------------
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+uniform vec4 u_color;
+
+// Attributes
+// ------------------------------------
+attribute vec3 a_position;
+attribute vec4 a_color;
+
+// Varying
+// ------------------------------------
+varying vec4 v_color;
+
+void main()
+{
+ v_color = a_color * u_color;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
+}
+"""
+
+
+frag = """
+// Varying
+// ------------------------------------
+varying vec4 v_color;
+
+void main()
+{
+ gl_FragColor = v_color;
+}
+"""
+
+
+# -----------------------------------------------------------------------------
+def cube():
+ """
+ Build vertices for a colored cube.
+
+ V is the vertices
+ I1 is the indices for a filled cube (use with GL_TRIANGLES)
+ I2 is the indices for an outline cube (use with GL_LINES)
+ """
+ vtype = [('a_position', np.float32, 3),
+ ('a_normal' , np.float32, 3),
+ ('a_color', np.float32, 4)]
+ # Vertices positions
+ v = [ [ 1, 1, 1], [-1, 1, 1], [-1,-1, 1], [ 1,-1, 1],
+ [ 1,-1,-1], [ 1, 1,-1], [-1, 1,-1], [-1,-1,-1] ]
+ # Face Normals
+ n = [ [ 0, 0, 1], [ 1, 0, 0], [ 0, 1, 0] ,
+ [-1, 0, 1], [ 0,-1, 0], [ 0, 0,-1] ]
+ # Vertice colors
+ c = [ [0, 1, 1, 1], [0, 0, 1, 1], [0, 0, 0, 1], [0, 1, 0, 1],
+ [1, 1, 0, 1], [1, 1, 1, 1], [1, 0, 1, 1], [1, 0, 0, 1] ];
+
+ V = np.array([(v[0],n[0],c[0]), (v[1],n[0],c[1]), (v[2],n[0],c[2]), (v[3],n[0],c[3]),
+ (v[0],n[1],c[0]), (v[3],n[1],c[3]), (v[4],n[1],c[4]), (v[5],n[1],c[5]),
+ (v[0],n[2],c[0]), (v[5],n[2],c[5]), (v[6],n[2],c[6]), (v[1],n[2],c[1]),
+ (v[1],n[3],c[1]), (v[6],n[3],c[6]), (v[7],n[3],c[7]), (v[2],n[3],c[2]),
+ (v[7],n[4],c[7]), (v[4],n[4],c[4]), (v[3],n[4],c[3]), (v[2],n[4],c[2]),
+ (v[4],n[5],c[4]), (v[7],n[5],c[7]), (v[6],n[5],c[6]), (v[5],n[5],c[5]) ],
+ dtype = vtype)
+ I1 = np.resize( np.array([0,1,2,0,2,3], dtype=np.uint32), 6*(2*3))
+ I1 += np.repeat( 4*np.arange(2*3), 6)
+
+ I2 = np.resize( np.array([0,1,1,2,2,3,3,0], dtype=np.uint32), 6*(2*4))
+ I2 += np.repeat( 4*np.arange(6), 8)
+
+ return V, I1, I2
+
+
+
+# -----------------------------------------------------------------------------
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 800, 600
+
+ self.vertices, self.filled, self.outline = cube()
+ self.filled_buf = gloo.ElementBuffer(self.filled)
+ self.outline_buf = gloo.ElementBuffer(self.outline)
+
+ self.program = gloo.Program(vert, frag)
+ self.program.set_vars(gloo.VertexBuffer(self.vertices))
+
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+
+ translate(self.view, 0,0,-5)
+ self.program['u_model'] = self.model
+ self.program['u_view'] = self.view
+
+ self.theta = 0
+ self.phi = 0
+
+ self._timer = app.Timer(1.0/60)
+ self._timer.connect(self.on_timer)
+ self._timer.start()
+
+ # ---------------------------------
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glEnable(gl.GL_DEPTH_TEST)
+ gl.glPolygonOffset( 1, 1 )
+ # gl.glEnable( gl.GL_LINE_SMOOTH )
+
+
+ # ---------------------------------
+ def on_timer(self,event):
+ self.theta += .5
+ self.phi += .5
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+ self.program['u_model'] = self.model
+ self.update()
+
+
+ # ---------------------------------
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = perspective( 45.0, width/float(height), 2.0, 10.0 )
+ self.program['u_projection'] = self.projection
+
+ # ---------------------------------
+ def on_paint(self, event):
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+
+ with self.program as prog:
+ # Filled cube
+ gl.glDisable( gl.GL_BLEND )
+ gl.glEnable( gl.GL_DEPTH_TEST )
+ gl.glEnable( gl.GL_POLYGON_OFFSET_FILL )
+ prog['u_color'] = 1,1,1,1
+ prog.draw(gl.GL_TRIANGLES, self.filled_buf)
+
+ # Outline
+ gl.glDisable( gl.GL_POLYGON_OFFSET_FILL )
+ gl.glEnable( gl.GL_BLEND )
+ gl.glDepthMask( gl.GL_FALSE )
+ prog['u_color'] = 0,0,0,1
+ prog.draw(gl.GL_LINES, self.outline_buf)
+ gl.glDepthMask( gl.GL_TRUE )
+
+
+
+# -----------------------------------------------------------------------------
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/howto/split-screen.py b/examples/howto/split-screen.py
new file mode 100644
index 0000000..d3ef163
--- /dev/null
+++ b/examples/howto/split-screen.py
@@ -0,0 +1,181 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+
+""" Example demonstrating two viewports in one window, and how one can
+propagate events to the viewports. Note that stuff like this will be
+part of the future higher lever visuals layer.
+"""
+
+import numpy as np
+from vispy import app, gloo
+from vispy.gloo import gl
+from vispy.util.event import EmitterGroup
+
+
+VERT_SHADER = """
+attribute vec3 a_position;
+uniform float u_size;
+uniform vec4 u_color;
+
+varying vec4 v_color;
+void main (void) {
+ gl_Position = vec4(a_position, 1.0);
+ v_color = u_color;
+ gl_PointSize = u_size;
+}
+"""
+
+FRAG_SHADER = """
+varying vec4 v_color;
+void main()
+{
+ float x = 2.0*gl_PointCoord.x - 1.0;
+ float y = 2.0*gl_PointCoord.y - 1.0;
+ float a = 1.0 - (x*x + y*y);
+ gl_FragColor = vec4(v_color.rgb, a*v_color.a);
+}
+
+"""
+
+
+class ViewPort(object):
+ """ Represents a rectangular region on the screen.
+ Resize and mouse events are propagated to here, as well
+ as the paint event.
+ """
+ def __init__(self, bgcolor):
+ self._bgcolor = bgcolor
+ self.events = EmitterGroup(source=self,
+ resize=app.canvas.ResizeEvent,
+ mouse_press=app.canvas.MouseEvent,
+ mouse_release=app.canvas.MouseEvent,
+ mouse_move=app.canvas.MouseEvent,
+ mouse_wheel=app.canvas.MouseEvent,
+ )
+
+ # Create program
+ self.program = gloo.Program(VERT_SHADER, FRAG_SHADER)
+ self.program['u_size'] = 20.0
+ self.program['u_color'] = bgcolor
+
+ # Create position
+ self.vbo = gloo.VertexBuffer(('', 'float32', 3))
+ self.program['a_position'] = self.vbo
+
+ # Init
+ self._pos = 25, 25
+ self._size = 1, 1
+
+
+ def on_mouse_move(self, event):
+ self._pos = event.pos
+
+
+ def on_mouse_press(self, event):
+ self.program['u_size'] = 30.0
+
+
+ def on_mouse_release(self, event):
+ self.program['u_size'] = 20.0
+
+
+ def on_resize(self, event):
+ self._size = event.size
+
+
+ def on_paint(self):
+ x = 2.0 * self._pos[0] / self._size[0] - 1.0
+ y = 2.0 * self._pos[1] / self._size[1] - 1.0
+ data = np.array([[x,-y,0]], np.float32)
+ self.vbo.set_data(data)
+ self.program.draw(gl.GL_POINTS)
+
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 400, 200
+ self.left = ViewPort( (1.0, 0.5, 0.5, 1.0) )
+ self.right = ViewPort( (0.5, 1.0, 0.5, 1.0) )
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1)
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
+
+
+ def on_paint(self, event):
+ # Paint events are "manually" propagated to the viewport instances,
+ # because we first want to set the glViewport for each one.
+
+ # Prepare
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT)
+ w1 = self.size[0] // 2
+ w2 = self.size[0] - w1
+ # Left
+ gl.glViewport(0, 0, w1, self.size[1])
+ self.left.on_paint()
+ # Right
+ gl.glViewport(w1, 0, w2, self.size[1])
+ self.right.on_paint()
+
+ # Invoke new draw
+ self.update()
+
+
+ def on_resize(self, event):
+ w1 = event.size[0]//2
+ w2 = event.size[0] - w1
+ h = event.size[1]
+ self.left.events.resize( size=(w1,h) )
+ self.right.events.resize( size=(w2,h) )
+
+
+ def on_mouse_press(self, event):
+ viewport, pos = self._get_viewport(event.pos)
+ self._re_emit_mouse_event(viewport.events.mouse_press, pos, event)
+
+
+ def on_mouse_release(self, event):
+ viewport, pos = self._get_viewport(event.pos)
+ self._re_emit_mouse_event(viewport.events.mouse_release, pos, event)
+
+
+ def on_mouse_move(self, event):
+ viewport, pos = self._get_viewport(event.pos)
+ self._re_emit_mouse_event(viewport.events.mouse_move, pos, event)
+
+
+ def on_mouse_wheel(self, event):
+ viewport, pos = self._get_viewport(event.pos)
+ self._re_emit_mouse_event(viewport.events.mouse_wheel, pos, event)
+
+
+ def _get_viewport(self, pos):
+ """ Based on a given position, get the viewport and the pos
+ relative to that viewport.
+ """
+ halfwidth = self.size[0]//2
+ if pos[0] < halfwidth:
+ viewport = self.left
+ pos = pos
+ else:
+ viewport = self.right
+ pos = pos[0]-halfwidth, pos[1]
+ return viewport, pos
+
+
+ def _re_emit_mouse_event(self, emitter, pos, event):
+ emitter(pos=pos, button=event.button, modifiers=event.modifiers,
+ delta=event.delta )
+
+
+
+if __name__ == '__main__':
+ canvas = Canvas()
+ canvas.show()
+ app.run()
diff --git a/examples/howto/start.py b/examples/howto/start.py
new file mode 100644
index 0000000..fef1f06
--- /dev/null
+++ b/examples/howto/start.py
@@ -0,0 +1,17 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+""" Probably the simplest vispy example
+"""
+
+from vispy import app
+from vispy.gloo import gl
+
+c = app.Canvas(show=True)
+
+ at c.connect
+def on_paint(event):
+ gl.glClearColor(0.2, 0.4, 0.6, 1.0)
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT)
+
+if __name__ == '__main__':
+ app.run()
diff --git a/examples/rawgl/rawgl-cube.py b/examples/rawgl/rawgl-cube.py
new file mode 100644
index 0000000..a01f0cc
--- /dev/null
+++ b/examples/rawgl/rawgl-cube.py
@@ -0,0 +1,202 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+This example is equivalent to the spinning cube example,
+but does not use vispy.gloo, but the raw GL API.
+
+Show spinning cube using VBO's, transforms and textures.
+The use of vertex and element buffer can be turned on or off.
+
+"""
+
+import numpy as np
+from vispy.util.transforms import perspective, translate, rotate
+from vispy import app, dataio
+from vispy.gloo import gl
+
+
+VERT_CODE = """
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+
+attribute vec3 a_position;
+attribute vec2 a_texcoord;
+
+varying vec2 v_texcoord;
+
+void main()
+{
+ v_texcoord = a_texcoord;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
+}
+"""
+
+
+FRAG_CODE = """
+uniform sampler2D u_texture;
+varying vec2 v_texcoord;
+void main()
+{
+ float ty = v_texcoord.y;
+ float tx = sin(ty*20.0)*0.05 + v_texcoord.x;
+ gl_FragColor = texture2D(u_texture, vec2(tx, ty));
+}
+"""
+
+
+# Read cube data (replace 'cube.obj' with 'teapot.obj'
+positions, faces, normals, texcoords = dataio.read_mesh('cube.obj')
+colors = np.random.uniform(0,1,positions.shape).astype('float32')
+
+
+class Canvas(app.Canvas):
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 400, 400
+ self.init_transforms()
+
+ self.timer = app.Timer(1.0/60)
+ self.timer.connect(self.update_transforms)
+ self.timer.start()
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glEnable(gl.GL_DEPTH_TEST)
+
+ # Create shader program
+ self._prog_handle = gl.glCreateProgram()
+
+ # Create vertex shader
+ shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
+ gl.glShaderSource(shader, VERT_CODE)
+ gl.glCompileShader(shader)
+ status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
+ if not status:
+ # We could show more useful info here, but that takes a few lines
+ raise RuntimeError('Vertex shader did not compile.')
+ else:
+ gl.glAttachShader(self._prog_handle, shader)
+
+ # Create fragment shader
+ shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
+ gl.glShaderSource(shader, FRAG_CODE)
+ gl.glCompileShader(shader)
+ status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
+ if not status:
+ # We could show more useful info here, but that takes a few lines
+ raise RuntimeError('Fragment shader did not compile.')
+ else:
+ gl.glAttachShader(self._prog_handle, shader)
+
+ # Link
+ gl.glLinkProgram(self._prog_handle)
+ status = gl.glGetProgramiv(self._prog_handle, gl.GL_LINK_STATUS)
+ if not status:
+ # We could show more useful info here, but that takes a few lines
+ raise RuntimeError('Program did not link.')
+
+ # Create texture
+ im = dataio.crate()
+ self._tex_handle = gl.glGenTextures(1)
+ gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
+ gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
+ gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_RGB,
+ im.shape[1], im.shape[0], 0, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, im)
+ gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
+ gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
+
+ if use_buffers:
+ # Create vertex buffer
+ self._positions_handle = gl.glGenBuffers(1)
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._positions_handle)
+ gl.glBufferData(gl.GL_ARRAY_BUFFER, positions.nbytes, positions, gl.GL_DYNAMIC_DRAW)
+ #
+ self._texcoords_handle = gl.glGenBuffers(1)
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._texcoords_handle)
+ gl.glBufferData(gl.GL_ARRAY_BUFFER, texcoords.nbytes, texcoords, gl.GL_DYNAMIC_DRAW)
+
+ # Create buffer for faces
+ self._faces_handle = gl.glGenBuffers(1)
+ gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._faces_handle)
+ gl.glBufferData(gl.GL_ELEMENT_ARRAY_BUFFER, faces.nbytes, faces, gl.GL_DYNAMIC_DRAW)
+
+
+ def on_resize(self, event):
+ w, h = event.size
+ gl.glViewport(0, 0, w, h)
+ self.projection = perspective( 45.0, w/float(h), 2.0, 10.0 )
+
+
+ def on_paint(self, event):
+
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ # Activate program and texture
+ gl.glUseProgram(self._prog_handle)
+ gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
+
+ # Set attributes (again, the loc can be cached)
+ loc = gl.glGetAttribLocation(self._prog_handle, 'a_position'.encode('utf-8'))
+ gl.glEnableVertexAttribArray(loc)
+ if use_buffers:
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._positions_handle)
+ gl.glVertexAttribPointer(loc, 3, gl.GL_FLOAT, False, 0, None)
+ else:
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0) # 0 means do not use buffer
+ gl.glVertexAttribPointer(loc, 3, gl.GL_FLOAT, False, 0, positions)
+ #
+ loc = gl.glGetAttribLocation(self._prog_handle, 'a_texcoord'.encode('utf-8'))
+ gl.glEnableVertexAttribArray(loc)
+ if use_buffers:
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._texcoords_handle)
+ gl.glVertexAttribPointer(loc, 2, gl.GL_FLOAT, False, 0, None)
+ else:
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0) # 0 means do not use buffer
+ gl.glVertexAttribPointer(loc, 2, gl.GL_FLOAT, False, 0, texcoords)
+
+ # Set uniforms (note that you could cache the locations)
+ loc = gl.glGetUniformLocation(self._prog_handle, 'u_view'.encode('utf-8'))
+ gl.glUniformMatrix4fv(loc, 1, False, self.view)
+ loc = gl.glGetUniformLocation(self._prog_handle, 'u_model'.encode('utf-8'))
+ gl.glUniformMatrix4fv(loc, 1, False, self.model)
+ loc = gl.glGetUniformLocation(self._prog_handle, 'u_projection'.encode('utf-8'))
+ gl.glUniformMatrix4fv(loc, 1, False, self.projection)
+
+ # Draw
+ if use_buffers:
+ gl.glBindBuffer(gl.GL_ELEMENT_ARRAY_BUFFER, self._faces_handle)
+ gl.glDrawElements(gl.GL_TRIANGLES, faces.size, gl.GL_UNSIGNED_INT, None)
+ else:
+ gl.glDrawElements(gl.GL_TRIANGLES, faces.size, gl.GL_UNSIGNED_INT, faces)
+
+
+ def init_transforms(self):
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+
+ self.theta = 0
+ self.phi = 0
+
+ translate(self.view, 0,0,-5)
+
+
+ def update_transforms(self, event):
+ self.theta += .5
+ self.phi += .5
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+
+ self.update()
+
+
+if __name__ == '__main__':
+ use_buffers = False
+
+ c = Canvas()
+ c.show()
+ app.run()
+
\ No newline at end of file
diff --git a/examples/rawgl/rawgl-fireworks.py b/examples/rawgl/rawgl-fireworks.py
new file mode 100644
index 0000000..ae25782
--- /dev/null
+++ b/examples/rawgl/rawgl-fireworks.py
@@ -0,0 +1,222 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+This example is equivalent to the fireworks example,
+but does not use vispy.gloo, but the raw GL API.
+
+Example demonstrating simulation of fireworks using point sprites.
+(adapted from the "OpenGL ES 2.0 Programming Guide")
+
+This example demonstrates a series of explosions that last one second. The
+visualization during the explosion is highly optimized using a Vertex Buffer
+Object (VBO). After each explosion, vertex data for the next explosion are
+calculated, such that each explostion is unique.
+"""
+
+import time
+import numpy as np
+import ctypes
+
+from vispy import app, dataio
+from vispy.gloo import gl
+
+
+# Create a texture
+radius = 32
+im1 = np.random.normal(0.8, 0.3, (radius*2+1, radius*2+1))
+
+# Mask it with a disk
+L = np.linspace(-radius, radius, 2 * radius + 1)
+(X, Y) = np.meshgrid(L, L)
+im1 *= np.array((X**2 + Y**2) <= radius * radius, dtype='float32')
+
+# Set number of particles, you should be able to scale this to 100000
+N = 10000
+
+# Create vertex data container
+vertex_data = np.zeros((N,), dtype=[('a_lifetime', np.float32, 1),
+ ('a_startPosition', np.float32, 3),
+ ('a_endPosition', np.float32, 3)])
+
+
+VERT_CODE = """
+uniform float u_time;
+uniform vec3 u_centerPosition;
+attribute float a_lifetime;
+attribute vec3 a_startPosition;
+attribute vec3 a_endPosition;
+varying float v_lifetime;
+
+void main () {
+ if (u_time <= a_lifetime)
+ {
+ gl_Position.xyz = a_startPosition + (u_time * a_endPosition);
+ gl_Position.xyz += u_centerPosition;
+ gl_Position.y -= 1.0 * u_time * u_time;
+ gl_Position.w = 1.0;
+ }
+ else
+ gl_Position = vec4(-1000, -1000, 0, 0);
+
+ v_lifetime = 1.0 - (u_time / a_lifetime);
+ v_lifetime = clamp(v_lifetime, 0.0, 1.0);
+ gl_PointSize = (v_lifetime * v_lifetime) * 40.0;
+}
+"""
+
+FRAG_CODE = """
+uniform sampler2D s_texture;
+uniform vec4 u_color;
+varying float v_lifetime;
+
+void main()
+{
+ vec4 texColor;
+ texColor = texture2D(s_texture, gl_PointCoord);
+ gl_FragColor = vec4(u_color) * texColor;
+ gl_FragColor.a *= v_lifetime;
+}
+"""
+
+
+class Canvas(app.Canvas):
+ def __init__(self):
+ app.Canvas.__init__(self)
+ self.size = 400, 400
+ self._starttime = time.time()
+ self._new_explosion()
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(0,0,0,1);
+
+ # Enable blending
+ gl.glEnable(gl.GL_BLEND)
+ gl.glBlendFunc(gl.GL_SRC_ALPHA, gl.GL_ONE)
+
+ # Create shader program
+ self._prog_handle = gl.glCreateProgram()
+
+ # Create vertex shader
+ shader = gl.glCreateShader(gl.GL_VERTEX_SHADER)
+ gl.glShaderSource_compat(shader, VERT_CODE)
+ gl.glCompileShader(shader)
+ status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
+ if not status:
+ # We could show more useful info here, but that takes a few lines
+ raise RuntimeError('Vertex shader did not compile.')
+ else:
+ gl.glAttachShader(self._prog_handle, shader)
+
+ # Create fragment shader
+ shader = gl.glCreateShader(gl.GL_FRAGMENT_SHADER)
+ need_enabled = gl.glShaderSource_compat(shader, FRAG_CODE)
+ gl.glCompileShader(shader)
+ status = gl.glGetShaderiv(shader, gl.GL_COMPILE_STATUS)
+ if not status:
+ # We could show more useful info here, but that takes a few lines
+ raise RuntimeError('Fragment shader did not compile.')
+ else:
+ gl.glAttachShader(self._prog_handle, shader)
+
+ # Enable point sprites
+ for enum in need_enabled:
+ gl.glEnable(enum)
+
+ # Link
+ gl.glLinkProgram(self._prog_handle)
+ status = gl.glGetProgramiv(self._prog_handle, gl.GL_LINK_STATUS)
+ if not status:
+ # We could show more useful info here, but that takes a few lines
+ raise RuntimeError('Program did not link.')
+
+ # Create texture
+ self._tex_handle = gl.glGenTextures(1)
+ gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 1)
+ gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
+ gl.glTexImage2D(gl.GL_TEXTURE_2D, 0, gl.GL_LUMINANCE,
+ im1.shape[1], im1.shape[0], 0, gl.GL_LUMINANCE, gl.GL_FLOAT,
+ im1.astype(np.float32))
+ gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MIN_FILTER, gl.GL_LINEAR)
+ gl.glTexParameter(gl.GL_TEXTURE_2D, gl.GL_TEXTURE_MAG_FILTER, gl.GL_LINEAR)
+
+ # Create vertex buffer
+ self._vbo_handle = gl.glGenBuffers(1)
+
+
+ def on_paint(self, event):
+
+ # Technically, we would only need to set u_time on every draw,
+ # because the program is enabled at the beginning and never disabled.
+ # In vispy, the program is re-enabled at each draw though and we
+ # want to keep the code similar.
+
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ # Activate program and texture
+ gl.glUseProgram(self._prog_handle)
+ gl.glBindTexture(gl.GL_TEXTURE_2D, self._tex_handle)
+
+ # Update VBO
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, self._vbo_handle)
+ gl.glBufferData(gl.GL_ARRAY_BUFFER, vertex_data.nbytes, vertex_data, gl.GL_DYNAMIC_DRAW)
+
+ # Set attributes (again, the loc can be cached)
+ loc = gl.glGetAttribLocation(self._prog_handle, 'a_lifetime'.encode('utf-8'))
+ gl.glEnableVertexAttribArray(loc)
+ gl.glVertexAttribPointer(loc, 1, gl.GL_FLOAT, False, 7*4, ctypes.c_voidp(0))
+ #
+ loc = gl.glGetAttribLocation(self._prog_handle, 'a_startPosition'.encode('utf-8'))
+ gl.glEnableVertexAttribArray(loc)
+ gl.glVertexAttribPointer(loc, 3, gl.GL_FLOAT, False, 7*4, ctypes.c_voidp(1*4))
+ #
+ loc = gl.glGetAttribLocation(self._prog_handle, 'a_endPosition'.encode('utf-8'))
+ gl.glEnableVertexAttribArray(loc)
+ gl.glVertexAttribPointer(loc, 3, gl.GL_FLOAT, False, 7*4, ctypes.c_voidp(4*4))
+ #
+ loc = gl.glGetUniformLocation(self._prog_handle, 'u_color'.encode('utf-8'))
+ gl.glUniform4f(loc, *self._color)
+
+ # Set unforms
+ loc = gl.glGetUniformLocation(self._prog_handle, 'u_time'.encode('utf-8'))
+ gl.glUniform1f(loc, time.time()-self._starttime)
+ #
+ loc = gl.glGetUniformLocation(self._prog_handle, 'u_centerPosition'.encode('utf-8'))
+ gl.glUniform3f(loc, *self._centerpos)
+
+ # Draw
+ gl.glDrawArrays(gl.GL_POINTS, 0, N)
+
+ # New explosion?
+ if time.time() - self._starttime > 1.5:
+ self._new_explosion()
+
+ # Redraw as fast as we can
+ self.update()
+
+
+ def _new_explosion(self):
+ # New centerpos
+ self._centerpos = np.random.uniform(-0.5, 0.5, (3,))
+
+ # New color, scale alpha with N
+ alpha = 1.0 / N**0.08
+ color = np.random.uniform(0.1, 0.9, (3,))
+ self._color = tuple(color)+ (alpha,)
+
+ # Create new vertex data
+ vertex_data['a_lifetime'] = np.random.normal(2.0, 0.5, (N,))
+ vertex_data['a_startPosition'] = np.random.normal(0.0, 0.2, (N,3))
+ vertex_data['a_endPosition'] = np.random.normal(0.0, 1.2, (N,3))
+
+ # Set time to zero
+ self._starttime = time.time()
+
+
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
+
\ No newline at end of file
diff --git a/examples/spinning-cube2.py b/examples/spinning-cube2.py
new file mode 100644
index 0000000..db9cf56
--- /dev/null
+++ b/examples/spinning-cube2.py
@@ -0,0 +1,121 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 50
+"""
+Show spinning cube using VBO's, and transforms, and texturing.
+"""
+
+import numpy as np
+from vispy import app, gloo, dataio
+from vispy.util.transforms import perspective, translate, rotate
+from vispy.gloo import gl
+
+
+VERT_CODE = """
+uniform mat4 u_model;
+uniform mat4 u_view;
+uniform mat4 u_projection;
+
+attribute vec3 a_position;
+attribute vec2 a_texcoord;
+
+varying vec2 v_texcoord;
+
+void main()
+{
+ v_texcoord = a_texcoord;
+ gl_Position = u_projection * u_view * u_model * vec4(a_position,1.0);
+ //gl_Position = vec4(a_position,1.0);
+
+}
+"""
+
+
+FRAG_CODE = """
+uniform sampler2D u_texture;
+varying vec2 v_texcoord;
+
+void main()
+{
+ float ty = v_texcoord.y;
+ float tx = sin(ty*50.0)*0.01 + v_texcoord.x;
+ gl_FragColor = texture2D(u_texture, vec2(tx, ty));
+}
+"""
+
+
+# Read cube data
+positions, faces, normals, texcoords = dataio.read_mesh('cube.obj')
+colors = np.random.uniform(0,1,positions.shape).astype('float32')
+
+faces_buffer = gloo.ElementBuffer(faces.astype(np.uint16))
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self, **kwargs):
+ app.Canvas.__init__(self, **kwargs)
+ self.geometry = 0, 0, 400, 400
+
+ self.program = gloo.Program(VERT_CODE, FRAG_CODE)
+
+ # Set attributes
+ self.program['a_position'] = gloo.VertexBuffer(positions)
+ self.program['a_texcoord'] = gloo.VertexBuffer(texcoords)
+
+ self.program['u_texture'] = gloo.Texture2D(dataio.crate())
+
+ # Handle transformations
+ self.init_transforms()
+
+ self.timer = app.Timer(1.0/60)
+ self.timer.connect(self.update_transforms)
+ self.timer.start()
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+ gl.glEnable(gl.GL_DEPTH_TEST)
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+ self.projection = perspective( 45.0, width/float(height), 2.0, 10.0 )
+ self.program['u_projection'] = self.projection
+
+
+ def on_paint(self, event):
+
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ self.program.draw(gl.GL_TRIANGLES, faces_buffer)
+
+
+ def init_transforms(self):
+ self.view = np.eye(4,dtype=np.float32)
+ self.model = np.eye(4,dtype=np.float32)
+ self.projection = np.eye(4,dtype=np.float32)
+
+ self.theta = 0
+ self.phi = 0
+
+ translate(self.view, 0,0,-5)
+ self.program['u_model'] = self.model
+ self.program['u_view'] = self.view
+
+
+ def update_transforms(self,event):
+ self.theta += .5
+ self.phi += .5
+ self.model = np.eye(4, dtype=np.float32)
+ rotate(self.model, self.theta, 0,0,1)
+ rotate(self.model, self.phi, 0,1,0)
+ self.program['u_model'] = self.model
+ self.update()
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/examples/texturing.py b/examples/texturing.py
new file mode 100644
index 0000000..408bc6c
--- /dev/null
+++ b/examples/texturing.py
@@ -0,0 +1,112 @@
+# #!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vispy: gallery 2
+
+"""
+Example demonstrating the use of textures in vispy.gloo.
+Three textures are created and combined in the fragment shader.
+"""
+
+from vispy.gloo import Program, Texture2D, VertexBuffer, ElementBuffer
+from vispy import app, dataio
+from vispy.gloo import gl
+
+
+import numpy as np
+
+# Texture 1
+im1 = dataio.crate()
+
+# Texture with bumbs (to muliply with im1)
+im2 = np.ones((20,20), 'float32')
+im2[::3,::3] = 0.5
+
+# Texture with a plus sign (to subtract from im1)
+im3 = np.zeros((30,30), 'float32')
+im3[10,:] = 1.0
+im3[:,10] = 1.0
+
+
+# Create vetices and texture coords in two separate arrays.
+# Note that combining both in one array (as in hello_quad2)
+# results in better performance.
+positions = np.array([ [-0.8, -0.8, 0.0], [+0.7, -0.7, 0.0],
+ [-0.7, +0.7, 0.0], [+0.8, +0.8, 0.0,] ], np.float32)
+texcoords = np.array([ [1.0, 1.0], [0.0, 1.0],
+ [1.0, 0.0], [0.0, 0.0]], np.float32)
+
+
+VERT_SHADER = """ // texture vertex shader
+
+attribute vec3 a_position;
+attribute vec2 a_texcoord;
+
+varying vec2 v_texcoord;
+
+void main (void) {
+ // Pass tex coords
+ v_texcoord = a_texcoord;
+ // Calculate position
+ gl_Position = vec4(a_position.x, a_position.y, a_position.z, 1.0);
+}
+"""
+
+FRAG_SHADER = """ // texture fragment shader
+uniform sampler2D u_texture1;
+uniform sampler2D u_texture2;
+uniform sampler2D u_texture3;
+
+varying vec2 v_texcoord;
+
+void main()
+{
+ vec4 clr1 = texture2D(u_texture1, v_texcoord);
+ vec4 clr2 = texture2D(u_texture2, v_texcoord);
+ vec4 clr3 = texture2D(u_texture3, v_texcoord);
+ gl_FragColor.rgb = clr1.rgb * clr2.r - clr3.r;
+ gl_FragColor.a = 1.0;
+}
+"""
+
+
+
+class Canvas(app.Canvas):
+
+ def __init__(self):
+ app.Canvas.__init__(self)
+
+ # Create program
+ self._program = Program(VERT_SHADER, FRAG_SHADER)
+
+ # Set uniforms and samplers
+ self._program['a_position'] = VertexBuffer(positions)
+ self._program['a_texcoord'] = VertexBuffer(texcoords)
+ #
+ self._program['u_texture1'] = Texture2D(im1)
+ self._program['u_texture2'] = Texture2D(im2)
+ self._program['u_texture3'] = Texture2D(im3)
+
+
+ def on_initialize(self, event):
+ gl.glClearColor(1,1,1,1)
+
+
+ def on_resize(self, event):
+ width, height = event.size
+ gl.glViewport(0, 0, width, height)
+
+
+ def on_paint(self, event):
+
+ # Clear
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT)
+
+ # Draw shape with texture, nested context
+ self._program.draw(gl.GL_TRIANGLE_STRIP)
+
+
+
+if __name__ == '__main__':
+ c = Canvas()
+ c.show()
+ app.run()
diff --git a/make/__init__.py b/make/__init__.py
new file mode 100644
index 0000000..8209ac1
--- /dev/null
+++ b/make/__init__.py
@@ -0,0 +1,6 @@
+"""
+By putting make.py in a package, we can do "python make" instead of
+"python make.py".
+"""
+from __future__ import print_function, division
+from .make import Maker
\ No newline at end of file
diff --git a/make/__main__.py b/make/__main__.py
new file mode 100644
index 0000000..9690a45
--- /dev/null
+++ b/make/__main__.py
@@ -0,0 +1,13 @@
+
+from __future__ import print_function, division
+
+import os
+import sys
+from make import Maker
+
+START_DIR = os.path.abspath(os.getcwd())
+
+try:
+ Maker(sys.argv)
+finally:
+ os.chdir(START_DIR)
\ No newline at end of file
diff --git a/make/make.py b/make/make.py
new file mode 100644
index 0000000..875c20e
--- /dev/null
+++ b/make/make.py
@@ -0,0 +1,406 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for mo
+
+"""
+Convenience tools for vispy developers
+
+ make.py command [arg]
+
+"""
+
+from __future__ import print_function, division
+
+import sys
+import os
+import shutil
+import subprocess
+import re
+
+# Save where we came frome and where this module lives
+START_DIR = os.path.abspath(os.getcwd())
+THIS_DIR = os.path.abspath(os.path.dirname(__file__))
+
+# Get root directory of the package, by looking for setup.py
+for subdir in ['.', '..']:
+ ROOT_DIR = os.path.abspath(os.path.join(THIS_DIR, subdir))
+ if os.path.isfile(os.path.join(ROOT_DIR, 'setup.py')):
+ break
+else:
+ sys.exit('Cannot find root dir')
+
+
+# Define directories and repos of interest
+DOC_DIR = os.path.join(ROOT_DIR, 'doc')
+#
+WEBSITE_DIR = os.path.join(ROOT_DIR, '_website')
+WEBSITE_REPO = 'git at github.com:vispy/vispy-website'
+#
+PAGES_DIR = os.path.join(ROOT_DIR, '_gh-pages')
+PAGES_REPO = 'git at github.com:vispy/vispy.github.com.git'
+#
+IMAGES_DIR = os.path.join(ROOT_DIR, '_images')
+IMAGES_REPO = 'git at github.com:vispy/images.git'
+
+
+class Maker:
+ """ Collection of make commands.
+
+ To create a new command, create a method with a short name, give it
+ a docstring, and make it do something useful :)
+
+ """
+
+ def __init__(self, argv):
+ """ Parse command line arguments. """
+ # Get function to call
+ if len(argv) == 1:
+ func, arg = self.help, ''
+ else:
+ command = argv[1].strip()
+ arg = ' '.join(argv[2:]).strip()
+ func = getattr(self, command, None)
+ # Call it if we can
+ if func is not None:
+ func(arg)
+ else:
+ sys.exit('Invalid command: "%s"' % command)
+
+
+ def help(self, arg):
+ """ Show help message. Use 'help X' to get more help on command X. """
+ if arg:
+ command = arg
+ func = getattr(self, command, None)
+ if func is not None:
+ doc = getattr(self, command).__doc__.strip()
+ print('make.py %s [arg]\n\n %s' % (command, doc))
+ print()
+ else:
+ sys.exit('Cannot show help on unknown command: "%s"' % command)
+
+ else:
+ print(__doc__.strip()+ '\n\nCommands:\n')
+ for command in sorted(dir(self)):
+ if command.startswith('_'):
+ continue
+ preamble = command.ljust(9)
+ #doc = getattr(self, command).__doc__.splitlines()[0].strip()
+ doc = getattr(self, command).__doc__.strip()
+ print(' %s %s' % (preamble, doc))
+ print()
+
+
+ def doc(self, arg):
+ """ Make API documentation. Subcommands:
+ * html - build html
+ * show - show the docs in your browser
+ """
+ # Prepare
+ build_dir = os.path.join(DOC_DIR, '_build')
+ if not arg:
+ return self.help('doc')
+ # Go
+ if 'html' == arg:
+ sphinx_clean(build_dir)
+ sphinx_build(DOC_DIR, build_dir)
+ elif 'show' == arg:
+ sphinx_show(os.path.join(build_dir, 'html'))
+ else:
+ sys.exit('Command "doc" does not have subcommand "%s"' % arg)
+
+
+ def website(self, arg):
+ """ Build website. Website source is put in '_website'. Subcommands:
+ * html - build html
+ * show - show the website in your browser
+ * upload - upload (commit+push) the resulting html to github
+ """
+ # Prepare
+ build_dir = os.path.join(WEBSITE_DIR, '_build')
+ html_dir = os.path.join(build_dir, 'html')
+ if not arg:
+ return self.help('website')
+
+ # Clone repo for website if needed, make up-to-date otherwise
+ if not os.path.isdir(WEBSITE_DIR):
+ os.chdir(ROOT_DIR)
+ sh("git clone %s %s" % (WEBSITE_REPO, WEBSITE_DIR))
+ else:
+ print('Updating website repo')
+ os.chdir(WEBSITE_DIR)
+ sh('git pull')
+
+ # Go
+ if 'html' == arg:
+ sphinx_clean(build_dir)
+ sphinx_build(WEBSITE_DIR, build_dir)
+ sphinx_copy_pages(html_dir, PAGES_DIR, PAGES_REPO)
+ elif 'show' == arg:
+ sphinx_show(PAGES_DIR)
+ elif 'upload' == arg:
+ sphinx_upload(PAGES_DIR)
+ print()
+ print("Do not forget to also commit+push your changes to '_website'")
+ else:
+ sys.exit('Command "website" does not have subcommand "%s"' % arg)
+
+
+ def test(self, arg):
+ """ Run all unit tests using nose. """
+ os.chdir(ROOT_DIR)
+ sys.argv[1:] = []
+ import nose
+ result = nose.run()
+
+
+ def images(self, arg):
+ """ Create images (screenshots). Subcommands:
+ * gallery - make screenshots for the gallery
+ * test - make screenshots for testing
+ * upload - upload the images repository
+ """
+ if not arg:
+ return self.help('images')
+
+ # Clone repo for images if needed, make up-to-date otherwise
+ if not os.path.isdir(IMAGES_DIR):
+ os.chdir(ROOT_DIR)
+ sh("git clone %s %s" % (IMAGES_REPO, IMAGES_DIR))
+ else:
+ print('Updating images repo')
+ os.chdir(IMAGES_DIR)
+ sh('git pull')
+
+ # Create subdirs if needed
+ for subdir in ['gallery', 'thumbs', 'test']:
+ subdir = os.path.join(IMAGES_DIR, subdir)
+ if not os.path.isdir(subdir):
+ os.mkdir(subdir)
+
+ # Go
+ if arg == 'gallery':
+ self._images_screenshots()
+ self._images_thumbnails()
+ elif arg == 'test':
+ rsys.exit('images test command not yet implemented')
+ elif arg == 'upload':
+ sphinx_upload(IMAGES_DIR)
+ else:
+ sys.exit('Command "website" does not have subcommand "%s"' % arg)
+
+
+ def _images_screenshots(self):
+ # Prepare
+ import imp
+ from vispy.util.dataio import imsave, _screenshot
+ examples_dir = os.path.join(ROOT_DIR, 'examples')
+ gallery_dir = os.path.join(IMAGES_DIR, 'gallery')
+
+ # Process all files ...
+ for filename, name in get_example_filenames(examples_dir):
+ name = name.replace('/', '__') # We use flat names
+ imagefilename = os.path.join(gallery_dir, name+'.png')
+
+ # Check if should make a screenshot
+ frames = []
+ lines = open(filename, 'rt').read().splitlines()
+ for line in lines[:10]:
+ if line.startswith('# vispy:') and 'gallery' in line:
+ # Get what frames to grab
+ frames = line.split('gallery')[1].strip()
+ frames = frames or '0'
+ frames = [int(i) for i in frames.split(':')]
+ if not frames:
+ frames = [0]
+ if len(frames)>1:
+ frames = list(range(*frames))
+ break
+ else:
+ continue # gallery hint not found
+
+ # Check if we need to take a sceenshot
+ if os.path.isfile(imagefilename):
+ print('Screenshot for %s already present (skip).' % name)
+ continue
+
+ # Import module and prepare
+ m = imp.load_source('vispy_example_'+name, filename)
+ m.done = False
+ m.frame = -1
+ m.images = []
+
+ # Create a canvas and grab a screenshot
+ def grabscreenshot(event):
+ if m.done: return # Grab only once
+ m.frame += 1
+ if m.frame in frames:
+ frames.remove(m.frame)
+ print('Grabbing a screenshot for %s' % name)
+ im = _screenshot((0, 0, c.size[0], c.size[1]))
+ m.images.append(im)
+ if not frames:
+ m.done = True
+ c = m.Canvas()
+ c.events.paint.connect(grabscreenshot)
+ c.show()
+ while not m.done:
+ m.app.process_events()
+ c.close()
+
+ # Save
+ imsave(imagefilename, m.images[0]) # Alwats show one image
+ if len(m.images) > 1:
+ import imageio # multiple gif not properly supported yet
+ imageio.mimsave(imagefilename[:-3]+'.gif', m.images)
+
+
+ def _images_thumbnails(self):
+ from vispy.util.dataio import imsave, imread
+ from skimage.transform import resize
+ import numpy as np
+ gallery_dir = os.path.join(IMAGES_DIR, 'gallery')
+ thumbs_dir = os.path.join(IMAGES_DIR, 'thumbs')
+ for fname in os.listdir(gallery_dir):
+ filename1 = os.path.join(gallery_dir, fname)
+ filename2 = os.path.join(thumbs_dir, fname)
+ #
+ im = imread(filename1)
+ newx = 200
+ newy = int( newx * im.shape[0] / im.shape[1])
+ im = (resize(im, (newy, newx), 2)*255).astype(np.uint8)
+ imsave(filename2, im)
+ print('Created thumbnail %s' % fname)
+
+
+
+## Functions used by the maker
+
+if sys.version_info[0] < 3:
+ input = raw_input
+
+
+def sh(cmd):
+ """Execute command in a subshell, return status code."""
+ return subprocess.check_call(cmd, shell=True)
+
+
+def sh2(cmd):
+ """Execute command in a subshell, return stdout.
+ Stderr is unbuffered from the subshell."""
+ p = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
+ out = p.communicate()[0]
+ retcode = p.returncode
+ if retcode:
+ raise subprocess.CalledProcessError(retcode, cmd)
+ else:
+ return out.rstrip().decode('utf-8', 'ignore')
+
+
+def sphinx_clean(build_dir):
+ if os.path.isdir(build_dir):
+ shutil.rmtree(build_dir)
+ os.mkdir(build_dir)
+ print('Cleared build directory.')
+
+
+def sphinx_build(src_dir, build_dir):
+ import sphinx
+ sphinx.main(( 'sphinx-build', # Dummy
+ '-b', 'html',
+ '-d', os.path.join(build_dir, 'doctrees'),
+ src_dir, # Source
+ os.path.join(build_dir, 'html'), # Dest
+ ))
+ print("Build finished. The HTML pages are in %s/html." % build_dir)
+
+
+def sphinx_show(html_dir):
+ index_html = os.path.join(html_dir, 'index.html')
+ if not os.path.isfile(index_html):
+ sys.exit('Cannot show pages, build the html first.')
+ import webbrowser
+ webbrowser.open_new_tab(index_html)
+
+
+def sphinx_copy_pages(html_dir, pages_dir, pages_repo):
+ # Create the pages repo if needed
+ if not os.path.isdir(pages_dir):
+ os.chdir(ROOT_DIR)
+ sh("git clone %s %s" % (pages_repo, pages_dir))
+ # Ensure that its up to date
+ os.chdir(pages_dir)
+ sh('git checkout master -q')
+ sh('git pull -q')
+ # This is pretty unforgiving: we unconditionally nuke the destination
+ # directory, and then copy the html tree in there
+ tmp_git_dir = os.path.join(ROOT_DIR, pages_dir+'_git')
+ shutil.move(os.path.join(pages_dir, '.git'), tmp_git_dir)
+ try:
+ shutil.rmtree(pages_dir)
+ shutil.copytree(html_dir, pages_dir)
+ shutil.move(tmp_git_dir, os.path.join(pages_dir, '.git'))
+ finally:
+ if os.path.isdir(tmp_git_dir):
+ shutil.rmtree(tmp_git_dir)
+ # Copy individual files
+ for fname in ['CNAME', 'README.md', 'conf.py', '.nojekyll', 'Makefile']:
+ shutil.copyfile(os.path.join(WEBSITE_DIR, fname),
+ os.path.join(pages_dir, fname))
+ # Messages
+ os.chdir(pages_dir)
+ sh('git status')
+ print()
+ print("Website copied to _gh-pages. Above you can see its status:")
+ print(" Run 'make.py website show' to view.")
+ print(" Run 'make.py website upload' to commit and push.")
+
+
+def sphinx_upload(repo_dir):
+ # Check head
+ os.chdir(repo_dir)
+ status = sh2('git status | head -1')
+ branch = re.match('\# On branch (.*)$', status).group(1)
+ if branch != 'master':
+ e = 'On %r, git branch is %r, MUST be "master"' % (repo_dir,
+ branch)
+ raise RuntimeError(e)
+ # Show repo and ask confirmation
+ print()
+ print('You are about to commit to:')
+ sh('git config --get remote.origin.url')
+ print()
+ print('Most recent 3 commits:')
+ sys.stdout.flush()
+ sh('git --no-pager log --oneline -n 3')
+ ok = input('Are you sure you want to commit and push? (y/[n]): ')
+ ok = ok or 'n'
+ # If ok, add, commit, push
+ if ok.lower() == 'y':
+ sh('git add .')
+ sh('git commit -am"Update (automated commit)"')
+ print()
+ sh('git push')
+
+
+def get_example_filenames(example_dir):
+ """ Yield (filename, name) elements for all examples. The examples
+ are organized in directories, therefore the name can contain a
+ forward slash.
+ """
+ for (dirpath, dirnames, filenames) in os.walk(example_dir):
+ for fname in filenames:
+ if not fname.endswith('.py'): continue
+ filename = os.path.join(dirpath, fname)
+ name = filename[len(example_dir):].lstrip('/\\')[:-3]
+ name = name.replace('\\', '/')
+ yield filename, name
+
+
+if __name__ == '__main__':
+ try:
+ Maker(sys.argv)
+ # Maker(('bla', 'gallery'))
+ finally:
+ os.chdir(START_DIR)
diff --git a/nosetests.py b/nosetests.py
new file mode 100644
index 0000000..aabfe68
--- /dev/null
+++ b/nosetests.py
@@ -0,0 +1,6 @@
+""" Run tests using nose.
+For when nosetests is not on your PATH.
+"""
+
+import nose
+result = nose.run()
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..410d99e
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,105 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Vispy setup script.
+
+Steps to do a new release:
+
+Preparations:
+ * Test on Windows, Linux, Mac
+ * Make release notes
+ * Update API documentation and other docs that need updating.
+
+Test installation:
+ * clear the build and dist dir (if they exist)
+ * python setup.py register -r http://testpypi.python.org/pypi
+ * python setup.py sdist upload -r http://testpypi.python.org/pypi
+ * pip install -i http://testpypi.python.org/pypi
+
+Define the version:
+ * update __version__ in __init__.py
+ * Tag the tip changeset as version x.x
+
+Generate and upload package (preferably on Windows)
+ * python setup.py register
+ * python setup.py sdist upload
+ * python setup.py bdist_wininst upload
+
+Announcing:
+ * It can be worth waiting a day for eager users to report critical bugs
+ * Announce in scipy-user, vispy mailing list, G+
+
+"""
+
+import os
+from distutils.core import setup
+
+name = 'vispy'
+description = 'Interactive visualization in Python'
+
+
+# Get version and docstring
+__version__ = None
+__doc__ = ''
+docStatus = 0 # Not started, in progress, done
+initFile = os.path.join(os.path.dirname(__file__), 'vispy', '__init__.py')
+for line in open(initFile).readlines():
+ if (line.startswith('__version__')):
+ exec(line.strip())
+ elif line.startswith('"""'):
+ if docStatus == 0:
+ docStatus = 1
+ line = line.lstrip('"')
+ elif docStatus == 1:
+ docStatus = 2
+ if docStatus == 1:
+ __doc__ += line
+
+
+setup(
+ name = name,
+ version = __version__,
+ author = 'Vispy contributers',
+ author_email = 'vispy at googlegroups.com',
+ license = '(new) BSD',
+
+ url = 'http://vispy.org',
+ download_url = 'https://pypi.python.org/pypi/vispy',
+ keywords = "visualization OpenGl ES medical imaging 3D plotting numpy bigdata",
+ description = description,
+ long_description = __doc__,
+
+ platforms = 'any',
+ provides = ['vispy'],
+ install_requires = ['numpy', 'pyOpenGl'],
+
+ packages = ['vispy',
+ 'vispy.util',
+ 'vispy.util.dataio',
+ 'vispy.app',
+ 'vispy.app.backends',
+ 'vispy.gloo',
+ 'vispy.gloo.gl',
+ ],
+ package_dir = {'vispy': 'vispy'},
+ package_data = {'vispy': ['data/*']},
+ zip_safe = False,
+
+ classifiers=[
+ 'Development Status :: 3 - Alpha',
+ 'Intended Audience :: Science/Research',
+ 'Intended Audience :: Education',
+ 'Intended Audience :: Developers',
+ 'Topic :: Scientific/Engineering :: Visualization',
+ 'License :: OSI Approved :: BSD License',
+ 'Operating System :: MacOS :: MacOS X',
+ 'Operating System :: Microsoft :: Windows',
+ 'Operating System :: POSIX',
+ 'Programming Language :: Python',
+ 'Programming Language :: Python :: 2.6',
+ 'Programming Language :: Python :: 2.7',
+ 'Programming Language :: Python :: 3.2',
+ 'Programming Language :: Python :: 3.3',
+ ],
+ )
diff --git a/stdeb.cfg b/stdeb.cfg
new file mode 100644
index 0000000..bde0e47
--- /dev/null
+++ b/stdeb.cfg
@@ -0,0 +1,7 @@
+[DEFAULT]
+Package: python-vispy
+XS-Python-Version: >= 2.6
+Maintainer: Jerome Kieffer <jerome.kieffer at esrf.fr>
+Build-Depends: python-opengl
+Recommends: python-numpy
+
diff --git a/vispy/__init__.py b/vispy/__init__.py
new file mode 100644
index 0000000..9478f56
--- /dev/null
+++ b/vispy/__init__.py
@@ -0,0 +1,104 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+Vispy is a collaborative project that has the goal to allow more sharing
+of code between visualization projects based on OpenGL. It does this
+by providing powerful interfaces to OpenGL, at different levels of
+abstraction and generality.
+
+These layers are:
+ * vispy.gloo.gl: raw OpenGL ES 2.0 API
+ * vispy.gloo: Object oriented GL API
+ * vispy.visuals: Higher level visualization objects (work in progress)
+ * ... more to come
+
+Further, vispy comes with a powerful event system and a small
+application framework that works on multiple backends. This allows easy
+creation of figures, and enables integrating visualizations in a GUI
+application.
+
+For more information see http://vispy.org.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+# Definition of the version number
+__version__ = '0.2.1'
+
+
+from vispy.util.event import EmitterGroup, EventEmitter, Event
+from vispy.util import keys, dataio
+
+
+class ConfigEvent(Event):
+ """ Event indicating a configuration change.
+
+ This class has a 'changes' attribute which is a dict of all name:value
+ pairs that have changed in the configuration.
+ """
+ def __init__(self, changes):
+ Event.__init__(self, type='config_change')
+ self.changes = changes
+
+
+class Config(object):
+ """ Container for global settings used application-wide in vispy.
+
+ Events:
+ -------
+ Config.events.changed - Emits ConfigEvent whenever the configuration changes.
+ """
+ def __init__(self):
+ self.events = EmitterGroup(source=self)
+ self.events['changed'] = EventEmitter(event_class=ConfigEvent, source=self)
+ self._config = {}
+
+ def __getitem__(self, item):
+ return self._config[item]
+
+ def __setitem__(self, item, val):
+ self._config[item] = val
+ # inform any listeners that a configuration option has changed
+ self.events.changed(changes={item:val})
+
+ def update(self, **kwds):
+ self._config.update(kwds)
+ self.events.changed(changes=kwds)
+
+ def __repr__(self):
+ return repr(self._config)
+
+config = Config()
+config.update(
+ default_backend='qt',
+ qt_lib= 'any', # options are 'pyqt', 'pyside', or 'any'
+ show_warnings=False,
+ gl_debug=False,
+)
+
+
+def parse_command_line_arguments():
+ """ Transform vispy specific command line args to vispy config.
+ Put into a function so that any variables dont leak in the vispy namespace.
+ """
+ import getopt, sys
+ # Get command line args for vispy
+ argnames = ['vispy-backend', 'vispy-gl-debug']
+ try:
+ opts, args = getopt.getopt(sys.argv[1:], '', argnames)
+ except getopt.GetoptError:
+ opts = []
+ # Use them to set the config values
+ for o, a in opts:
+ if o.startswith('--vispy'):
+ if o == '--vispy-backend':
+ config['default_backend'] = a
+ print('backend', a)
+ elif o == '--vispy-gl-debug':
+ config['gl_debug'] = True
+ else:
+ print("Unsupported vispy flag: %s" % o)
+parse_command_line_arguments()
diff --git a/vispy/app/__init__.py b/vispy/app/__init__.py
new file mode 100644
index 0000000..29a949f
--- /dev/null
+++ b/vispy/app/__init__.py
@@ -0,0 +1,65 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+The app module defines three classes: Application, Canvas, and Timer.
+On loading, vispy creates a default Application instance which can be used
+via functions in the module's namespace.
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import vispy
+
+from .application import Application, ApplicationBackend
+from .canvas import Canvas, CanvasBackend
+from .timer import Timer, TimerBackend
+
+# Create default application instance
+default_app = Application()
+
+
+def use(backend_name=None):
+ """ Select a backend by name. If the backend name is omitted, will
+ chose a suitable backend automatically. It is an error to try to
+ select a particular backend if one is already selected. Available
+ backends: 'PySide', 'PyQt4', 'Glut', 'Pyglet', 'qt'. The latter
+ will use PySide or PyQt4, whichever works.
+
+ If a backend name is provided, and that backend could not be loaded,
+ an error is raised.
+
+ If no backend name is provided, this function will first check if
+ the GUI toolkit corresponding to each backend is already imported,
+ and try that backend first. If this is unsuccessful, it will try
+ the 'default_backend' provided in the vispy config. If still not
+ succesful, it will try each backend in a predetermined order.
+ """
+ return default_app.use(backend_name)
+
+
+def create():
+ """ Create the native application.
+ """
+ return default_app.create()
+
+
+def run():
+ """ Enter the native GUI event loop.
+ """
+ return default_app.run()
+
+
+def quit():
+ """ Quit the native GUI event loop.
+ """
+ return default_app.quit()
+
+
+def process_events():
+ """ Process all pending GUI events. If the mainloop is not
+ running, this should be done regularly to keep the visualization
+ interactive and to keep the event system going.
+ """
+ return default_app.process_events()
diff --git a/vispy/app/application.py b/vispy/app/application.py
new file mode 100644
index 0000000..5c658b9
--- /dev/null
+++ b/vispy/app/application.py
@@ -0,0 +1,204 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+Implements the global singleton app object.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+
+import vispy
+from vispy.app.backends import BACKENDS, BACKENDMAP, ATTEMPTED_BACKENDS
+
+
+
+class Application(object):
+ """ Representation of the vispy application. This wraps a native
+ GUI application instance. Vispy has a default instance of this class
+ at vispy.app.default_app.
+
+ There are multiple stages for an Application object:
+ * Backend-less - the state when it is just initialized
+ * Backend selected - use() has been successfully called. Note that
+ the Canvas calls use() without arguments reight before creating
+ its backend widget.
+ * Native application is created - the Canvas probes the
+ Application,native property to ensure that there is a native
+ application right before a native widget is created.
+
+ """
+
+ def __init__(self):
+ self._backend_module = None
+ self._backend = None
+
+ def __repr__(self):
+ name = self.backend_name
+ if not name:
+ return '<Vispy app with no backend>'
+ else:
+ return '<Vispy app, wrapping the %s GUI toolkit>' % name
+
+ @property
+ def backend_name(self):
+ """ The name of the GUI backend that this app wraps.
+ """
+ if self._backend is not None:
+ return self._backend._vispy_get_backend_name()
+ else:
+ return ''
+
+ @property
+ def backend_module(self):
+ """ The module object that defines the backend.
+ """
+ return self._backend_module
+
+ def process_events(self):
+ """ Process all pending GUI events. If the mainloop is not
+ running, this should be done regularly to keep the visualization
+ interactive and to keep the event system going.
+ """
+ return self._backend._vispy_process_events()
+
+ def create(self):
+ """ Create the native application.
+ """
+ self.native
+
+ def run(self):
+ """ Enter the native GUI event loop.
+ """
+ return self._backend._vispy_run()
+
+ def quit(self):
+ """ Quit the native GUI event loop.
+ """
+ return self._backend._vispy_quit()
+
+ @property
+ def native(self):
+ """ The native GUI application instance.
+ """
+ return self._backend._vispy_get_native_app()
+
+
+ def use(self, backend_name=None):
+ """ Select a backend by name. If the backend name is omitted,
+ will chose a suitable backend automatically. It is an error to
+ try to select a particular backend if one is already selected.
+ Available backends: 'PySide', 'PyQt4', 'Glut', 'Pyglet', 'qt'.
+ The latter will use PySide or PyQt4, whichever works.
+
+ If a backend name is provided, and that backend could not be
+ loaded, an error is raised.
+
+ If no backend name is provided, this function will first check
+ if the GUI toolkit corresponding to each backend is already
+ imported, and try that backend first. If this is unsuccessful,
+ it will try the 'default_backend' provided in the vispy config.
+ If still not succesful, it will try each backend in a
+ predetermined order.
+
+ """
+ import vispy.app
+
+ # Should we try and load any backend, or just this specific one?
+ try_others = backend_name is None
+
+ # Check if already selected
+ if self._backend is not None:
+ if backend_name and backend_name.lower() != self.backend_name.lower():
+ raise RuntimeError('Can only select a backend once.')
+ return
+
+
+ # Get backends to try ...
+ backends_to_try = []
+ if not try_others:
+ # Test if given name is ok
+ if backend_name.lower() not in BACKENDMAP.keys():
+ raise ValueError('Backend name not known: "%s"' % backend_name)
+ # Add it
+ backends_to_try.append(backend_name.lower())
+ else:
+ # See if a backend is loaded
+ for name, module_name, native_module_name in BACKENDS:
+ if native_module_name and native_module_name in sys.modules:
+ backends_to_try.append(name.lower())
+ # See if a default is given
+ default_backend = vispy.config['default_backend'].lower()
+ if default_backend.lower() in BACKENDMAP.keys():
+ if default_backend not in backends_to_try:
+ backends_to_try.append(default_backend)
+ # After this, try each one
+ for name, module_name, native_module_name in BACKENDS:
+ name = name.lower()
+ if name not in backends_to_try:
+ backends_to_try.append(name)
+
+
+ # Now try each one
+ for key in backends_to_try:
+ # Get info for this backend
+ try:
+ name, module_name, native_module_name = BACKENDMAP[key]
+ except KeyError:
+ print('This should not happen, unknown backend: "".' % key)
+ continue
+ # Get backend module name
+ mod_name = 'vispy.app.backends.' + module_name
+ # Try to import it ...
+
+ try:
+ ATTEMPTED_BACKENDS.append(name)
+ __import__(mod_name)
+ except ImportError as err:
+ msg = 'Could not import backend "%s":\n%s' % (name, str(err))
+ if not try_others:
+ raise RuntimeError(msg)
+ except Exception as err:
+ msg = 'Error while importing backend "%s":\n%s' % (name, str(err))
+ if not try_others:
+ raise RuntimeError(msg)
+ else:
+ print(msg)
+ else:
+ # Success!
+ self._backend_module = getattr(vispy.app.backends, module_name)
+ break
+ else:
+ raise RuntimeError('Could not import any of the backends.')
+
+ # Store classes for app backend and canvas backend
+ self._backend = self.backend_module.ApplicationBackend()
+
+
+class ApplicationBackend(object):
+ """ ApplicationBackend()
+
+ Abstract class that provides an interface between backends and Application.
+ Each backend must implement a subclass of ApplicationBackend, and
+ implement all its _vispy_xxx methods.
+ """
+
+ def _vispy_get_backend_name(self):
+ raise NotImplementedError()
+
+ def _vispy_process_events(self):
+ raise NotImplementedError()
+
+ def _vispy_run(self):
+ raise NotImplementedError()
+
+ def _vispy_quit(self):
+ raise NotImplementedError()
+
+ def _vispy_get_native_app(self):
+ # Should return the native application object
+ return self
+
diff --git a/vispy/app/backends/__init__.py b/vispy/app/backends/__init__.py
new file mode 100644
index 0000000..33c7c71
--- /dev/null
+++ b/vispy/app/backends/__init__.py
@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" vispy.app.backends
+
+The backend modules are dynamically imported when needed. This module
+defines a small description of each supported backend, so that for
+instance we can test whether the GUI toolkit for a backend is already
+imported. This stuff is mostly used in the Application.use method.
+"""
+
+# Define backends: name, vispy.app.backends.xxx module, native module name.
+# This is the order in which they are attempted to be imported.
+BACKENDS = [ ('Test', 'nonexistent', 'foo.bar.lalalala'), # For testing
+ ('Qt', 'qt', None), # Meta backend
+ ('Glut', 'glut', 'OpenGL.GLUT'),
+ ('Pyglet', 'pyglet', 'pyglet'),
+ ('PySide', 'qt', 'PySide'),
+ ('PyQt4', 'qt', 'PyQt4'),
+ ]
+
+# Map of the lowercase backend names to the backend descriptions above
+# so that we can look up its properties if we only have a name.
+BACKENDMAP = dict([(be[0].lower(), be) for be in BACKENDS])
+
+# List of attempted backends. For logging and for communicating to the backends.
+ATTEMPTED_BACKENDS = []
diff --git a/vispy/app/backends/glut.py b/vispy/app/backends/glut.py
new file mode 100644
index 0000000..0a7bf1b
--- /dev/null
+++ b/vispy/app/backends/glut.py
@@ -0,0 +1,432 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+vispy backend for glut.
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from vispy.util.event import Event
+from vispy import app
+from vispy import keys
+import vispy.util.ptime as ptime
+import vispy
+
+import OpenGL.error
+import OpenGL.GLUT as glut
+
+
+# glut.GLUT_ACTIVE_SHIFT: keys.SHIFT,
+# glut.GLUT_ACTIVE_CTRL: keys.CONTROL,
+# glut.GLUT_ACTIVE_ALT: keys.ALT,
+# -1: keys.META,
+
+# Map native keys to vispy keys
+KEYMAP = {
+ -1: keys.SHIFT,
+ -2: keys.CONTROL,
+ -3: keys.ALT,
+ -4: keys.META,
+
+ glut.GLUT_KEY_LEFT: keys.LEFT,
+ glut.GLUT_KEY_UP: keys.UP,
+ glut.GLUT_KEY_RIGHT: keys.RIGHT,
+ glut.GLUT_KEY_DOWN: keys.DOWN,
+ glut.GLUT_KEY_PAGE_UP: keys.PAGEUP,
+ glut.GLUT_KEY_PAGE_DOWN: keys.PAGEDOWN,
+
+ glut.GLUT_KEY_INSERT: keys.INSERT,
+ chr(127): keys.DELETE,
+ glut.GLUT_KEY_HOME: keys.HOME,
+ glut.GLUT_KEY_END: keys.END,
+
+ chr(27): keys.ESCAPE,
+ chr(8): keys.BACKSPACE,
+
+ glut.GLUT_KEY_F1: keys.F1,
+ glut.GLUT_KEY_F2: keys.F2,
+ glut.GLUT_KEY_F3: keys.F3,
+ glut.GLUT_KEY_F4: keys.F4,
+ glut.GLUT_KEY_F5: keys.F5,
+ glut.GLUT_KEY_F6: keys.F6,
+ glut.GLUT_KEY_F7: keys.F7,
+ glut.GLUT_KEY_F8: keys.F8,
+ glut.GLUT_KEY_F9: keys.F9,
+ glut.GLUT_KEY_F10: keys.F10,
+ glut.GLUT_KEY_F11: keys.F11,
+ glut.GLUT_KEY_F12: keys.F12,
+
+ ' ': keys.SPACE,
+ '\r': keys.ENTER,
+ '\n': keys.ENTER,
+ '\t': keys.TAB,
+}
+
+
+BUTTONMAP = { glut.GLUT_LEFT_BUTTON:1,
+ glut.GLUT_RIGHT_BUTTON:2,
+ glut.GLUT_MIDDLE_BUTTON:3
+ }
+
+
+ALL_WINDOWS = []
+
+class ApplicationBackend(app.ApplicationBackend):
+ def __init__(self):
+ app.ApplicationBackend.__init__(self)
+ self._inizialized = False
+ self._windows = []
+
+
+ def _vispy_get_backend_name(self):
+ return 'Glut'
+
+ def _vispy_process_events(self):
+ pass # not possible?
+
+ def _vispy_run(self):
+ self._vispy_get_native_app() # Force exist
+ return glut.glutMainLoop()
+
+ def _vispy_quit(self):
+ global ALL_WINDOWS
+ for win in ALL_WINDOWS:
+ win._vispy_close()
+
+ def _vispy_get_native_app(self):
+ import sys, ctypes
+ from OpenGL import platform
+
+ # HiDPI support for retina display
+ # This requires glut from http://iihm.imag.fr/blanch/software/glut-macosx/
+ if sys.platform == 'darwin':
+ try:
+ glutInitDisplayString = platform.createBaseFunction(
+ 'glutInitDisplayString', dll=platform.GLUT, resultType=None,
+ argTypes=[ctypes.c_char_p],
+ doc='glutInitDisplayString( ) -> None',
+ argNames=() )
+ text = ctypes.c_char_p("rgba stencil double samples=8 hidpi")
+ glutInitDisplayString(text)
+ except:
+ pass
+ if not self._inizialized:
+ glut.glutInit() # todo: maybe allow user to give args?
+ self._inizialized = True
+ return glut
+
+
+
+class CanvasBackend(app.CanvasBackend):
+ """ GLUT backend for Canvas abstract class."""
+
+ def __init__(self, name='glut window', *args, **kwargs):
+ app.CanvasBackend.__init__(self)
+ self._id = glut.glutCreateWindow(name)
+ global ALL_WINDOWS
+ ALL_WINDOWS.append(self)
+
+ # Cache of modifiers so we can send modifiers along with mouse motion
+ self._modifiers_cache = ()
+
+ # Note: this seems to cause the canvas to ignore calls to show()
+ # about half of the time.
+ #glut.glutHideWindow() # Start hidden, like the other backends
+
+ # Register callbacks
+ glut.glutDisplayFunc(self.on_draw)
+ glut.glutReshapeFunc(self.on_resize)
+ #glut.glutVisibilityFunc(self.on_show)
+ glut.glutKeyboardFunc(self.on_key_press)
+ glut.glutSpecialFunc(self.on_key_press)
+ glut.glutKeyboardUpFunc(self.on_key_release)
+ glut.glutMouseFunc(self.on_mouse_action)
+ glut.glutMotionFunc(self.on_mouse_motion)
+ glut.glutPassiveMotionFunc(self.on_mouse_motion)
+
+ # Set close function. See issue #10. For some reason, the function
+ # can still not exist even if we checked its boolean status.
+ closeFuncSet = False
+ if bool(glut.glutWMCloseFunc): # OSX specific test
+ try:
+ glut.glutWMCloseFunc(self.on_close)
+ closeFuncSet = True
+ except OpenGL.error.NullFunctionError:
+ pass
+ if not closeFuncSet:
+ try:
+ glut.glutCloseFunc(self.on_close)
+ closeFuncSet = True
+ except OpenGL.error.NullFunctionError:
+ pass
+
+ #glut.glutFunc(self.on_)
+
+ self._initialized = False
+
+ # LC: I think initializing here makes it more consistent with other backends
+ glut.glutTimerFunc(0, self._emit_initialize, None)
+
+ def _emit_initialize(self, _=None):
+ if not self._initialized:
+ self._initialized = True
+ self._vispy_canvas.events.initialize()
+
+ def _vispy_set_current(self):
+ # Make this the current context
+ glut.glutSetWindow(self._id)
+
+ def _vispy_swap_buffers(self):
+ # Swap front and back buffer
+ glut.glutSetWindow(self._id)
+ glut.glutSwapBuffers()
+
+ def _vispy_set_title(self, title):
+ # Set the window title. Has no effect for widgets
+ glut.glutSetWindow(self._id)
+ glut.glutSetWindowTitle(title)
+
+ def _vispy_set_size(self, w, h):
+ # Set size of the widget or window
+ glut.glutSetWindow(self._id)
+ glut.glutReshapeWindow(w, h)
+
+ def _vispy_set_position(self, x, y):
+ # Set position of the widget or window. May have no effect for widgets
+ glut.glutSetWindow(self._id)
+ glut.glutPositionWindow(x, y)
+
+ def _vispy_set_visible(self, visible):
+ # Show or hide the window or widget
+ glut.glutSetWindow(self._id)
+ if visible:
+ glut.glutShowWindow()
+ else:
+ glut.glutHideWindow()
+
+ def _vispy_update(self):
+ # Invoke a redraw
+ glut.glutSetWindow(self._id)
+ glut.glutPostRedisplay()
+
+ def _vispy_close(self):
+ # Force the window or widget to shut down
+ glut.glutDestroyWindow(self._id)
+
+ def _vispy_get_geometry(self):
+ # Should return widget (x, y, w, h)
+ glut.glutSetWindow(self._id)
+ x = glut.glutGet(glut.GLUT_WINDOW_X)
+ y = glut.glutGet(glut.GLUT_WINDOW_Y)
+ w = glut.glutGet(glut.GLUT_WINDOW_WIDTH)
+ h = glut.glutGet(glut.GLUT_WINDOW_HEIGHT)
+ return x, y, w, h
+
+ def _vispy_get_size(self):
+ glut.glutSetWindow(self._id)
+ w = glut.glutGet(glut.GLUT_WINDOW_WIDTH)
+ h = glut.glutGet(glut.GLUT_WINDOW_HEIGHT)
+ return w, h
+
+ def _vispy_get_position(self):
+ glut.glutSetWindow(self._id)
+ x = glut.glutGet(glut.GLUT_WINDOW_X)
+ y = glut.glutGet(glut.GLUT_WINDOW_Y)
+ return x, y
+
+ def on_resize(self, w, h):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.resize(size=(w,h))
+
+ def on_close(self):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.close()
+
+ def on_draw(self, dummy=None):
+ if self._vispy_canvas is None:
+ return
+ if not self._initialized:
+ # The timer that we set may not have fired just yet
+ self._emit_initialize()
+
+ #w = glut.glutGet(glut.GLUT_WINDOW_WIDTH)
+ #h = glut.glutGet(glut.GLUT_WINDOW_HEIGHT)
+ self._vispy_canvas.events.paint(region=None) #(0, 0, w, h))
+
+ def on_mouse_action(self, button, state, x, y):
+ if self._vispy_canvas is None:
+ return
+ action = {glut.GLUT_UP:'release', glut.GLUT_DOWN:'press'}[state]
+ mod = self._modifiers(False)
+
+ if button < 3:
+ # Mouse click event
+ button = BUTTONMAP.get(button, 0)
+ if action == 'press':
+ self._vispy_mouse_press(pos=(x,y), button=button, modifiers=mod)
+ else:
+ self._vispy_mouse_release(pos=(x,y), button=button, modifiers=mod)
+
+ elif button in (3, 4):
+ # Wheel event
+ deltay = 1.0 if button==3 else -1.0
+ self._vispy_canvas.events.mouse_wheel(
+ pos=(x, y),
+ delta=(0.0, deltay),
+ modifiers=mod,
+ )
+
+ def on_mouse_motion(self, x, y):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_mouse_move(
+ pos=(x, y),
+ modifiers=self._modifiers(False),
+ )
+
+
+ def on_key_press(self, key, x, y):
+ key, text = self._process_key(key)
+ self._vispy_canvas.events.key_press(
+ key=key,
+ text=text,
+ modifiers=self._modifiers(),
+ )
+
+ def on_key_release(self, key, x, y):
+ key, text = self._process_key(key)
+ self._vispy_canvas.events.key_release(
+ key=key,
+ text=text,
+ modifiers=self._modifiers()
+ )
+
+ def _process_key(self, key):
+ if key in KEYMAP:
+ if isinstance(key, int):
+ return KEYMAP[key], ''
+ else:
+ return KEYMAP[key], key
+ elif isinstance(key, int):
+ return None, '' # unsupported special char
+ else:
+ return keys.Key(key.upper()), key
+
+ def _modifiers(self, query_now=True):
+ if query_now:
+ glutmod = glut.glutGetModifiers()
+ mod = ()
+ if glut.GLUT_ACTIVE_SHIFT & glutmod:
+ mod += keys.SHIFT,
+ if glut.GLUT_ACTIVE_CTRL & glutmod:
+ mod += keys.CONTROL,
+ if glut.GLUT_ACTIVE_ALT & glutmod:
+ mod += keys.ALT,
+ self._modifiers_cache = mod
+ return self._modifiers_cache
+
+
+import weakref
+
+def _glut_callback(id):
+ # Get weakref wrapper for timer
+ timer = TimerBackend._timers.get(id, None)
+ if timer is None:
+ return
+ # Get timer object
+ timer = timer()
+ if timer is None:
+ return
+ # Kick it!
+ if timer._vispy_timer._running:
+ timer._vispy_timer._timeout()
+ ms = int(timer._vispy_timer._interval*1000)
+ glut.glutTimerFunc(ms, _glut_callback, timer._id)
+
+
+#class TimerBackend(app.TimerBackend):
+ #_counter = 0
+ #_timers = {}
+
+ #def __init__(self, vispy_timer):
+ #app.TimerBackend.__init__(self, vispy_timer)
+ ## Give this timer a unique id
+ #TimerBackend._counter += 1
+ #self._id = TimerBackend._counter
+ ## Store this timer (using a weak ref)
+ #self._timers[self._id] = weakref.ref(self)
+
+ #@classmethod
+ #def _glut_callback(cls, id):
+ ## Get weakref wrapper for timer
+ #timer = cls._timers.get(id, None)
+ #if timer is None:
+ #return
+ ## Get timer object
+ #timer = timer()
+ #if timer is None:
+ #return
+ ## Kick it!
+ #if timer._vispy_timer._running:
+ #timer._vispy_timer._timeout()
+ #ms = int(timer._vispy_timer._interval*1000)
+ #glut.glutTimerFunc(ms, TimerBackend._glut_callback, timer._id)
+
+ #def _vispy_start(self, interval):
+ ##glut.glutTimerFunc(int(interval*1000), TimerBackend._glut_callback, self._id)
+ #glut.glutTimerFunc(int(interval*1000), _glut_callback, self._id)
+
+ #def _vispy_stop(self):
+ #pass
+
+ #def _vispy_get_native_timer(self):
+ #return glut # or self?
+
+# Note: we could also build a timer using glutTimerFunc, but this causes trouble
+# because timer callbacks appear to take precedence over all others. Thus,
+# a fast timer can block new display events.
+class TimerBackend(app.TimerBackend):
+ _initialized = False
+ _schedule = []
+
+ def __init__(self, vispy_timer):
+ app.TimerBackend.__init__(self, vispy_timer)
+ self._init_class()
+
+ @classmethod
+ def _init_class(cls):
+ if cls._initialized:
+ return
+ glut.glutIdleFunc(cls._idle_callback)
+ cls._initialized = True
+
+ @classmethod
+ def _idle_callback(cls):
+ now = ptime.time()
+ new_schedule = []
+
+ ## see whether there are any timers ready
+ while len(cls._schedule) > 0 and cls._schedule[0][0] <= now:
+ timer = cls._schedule.pop(0)[1]
+ timer._vispy_timer._timeout()
+ if timer._vispy_timer.running:
+ new_schedule.append((now+timer._vispy_timer.interval, timer))
+
+ ## schedule next round of timeouts
+ if len(new_schedule) > 0:
+ cls._schedule.extend(new_schedule)
+ cls._schedule.sort()
+
+ def _vispy_start(self, interval):
+ now = ptime.time()
+ self._schedule.append((now + interval, self))
+
+ def _vispy_stop(self):
+ pass
+
+ def _vispy_get_native_timer(self):
+ return None # glut has no native timer objects.
diff --git a/vispy/app/backends/pyglet.py b/vispy/app/backends/pyglet.py
new file mode 100644
index 0000000..71bbbbd
--- /dev/null
+++ b/vispy/app/backends/pyglet.py
@@ -0,0 +1,343 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+vispy backend for pyglet.
+"""
+
+# absolute import is important here, since this module is called pyglet :)
+from __future__ import print_function, division, absolute_import
+
+from vispy.util.event import Event
+from vispy import app
+from vispy import keys
+import vispy
+
+import pyglet.window
+import pyglet.app
+import pyglet.clock
+
+
+# Map native keys to vispy keys
+KEYMAP = {
+ pyglet.window.key.LSHIFT: keys.SHIFT,
+ pyglet.window.key.RSHIFT: keys.SHIFT,
+ pyglet.window.key.LCTRL: keys.CONTROL,
+ pyglet.window.key.RCTRL: keys.CONTROL,
+ pyglet.window.key.LALT: keys.ALT,
+ pyglet.window.key.RALT: keys.ALT,
+ pyglet.window.key.LMETA: keys.META,
+ pyglet.window.key.RMETA: keys.META,
+
+ pyglet.window.key.LEFT: keys.LEFT,
+ pyglet.window.key.UP: keys.UP,
+ pyglet.window.key.RIGHT: keys.RIGHT,
+ pyglet.window.key.DOWN: keys.DOWN,
+ pyglet.window.key.PAGEUP: keys.PAGEUP,
+ pyglet.window.key.PAGEDOWN: keys.PAGEDOWN,
+
+ pyglet.window.key.INSERT: keys.INSERT,
+ pyglet.window.key.DELETE: keys.DELETE,
+ pyglet.window.key.HOME: keys.HOME,
+ pyglet.window.key.END: keys.END,
+
+ pyglet.window.key.ESCAPE: keys.ESCAPE,
+ pyglet.window.key.BACKSPACE: keys.BACKSPACE,
+
+ pyglet.window.key.F1: keys.F1,
+ pyglet.window.key.F2: keys.F2,
+ pyglet.window.key.F3: keys.F3,
+ pyglet.window.key.F4: keys.F4,
+ pyglet.window.key.F5: keys.F5,
+ pyglet.window.key.F6: keys.F6,
+ pyglet.window.key.F7: keys.F7,
+ pyglet.window.key.F8: keys.F8,
+ pyglet.window.key.F9: keys.F9,
+ pyglet.window.key.F10: keys.F10,
+ pyglet.window.key.F11: keys.F11,
+ pyglet.window.key.F12: keys.F12,
+
+ pyglet.window.key.SPACE: keys.SPACE,
+ pyglet.window.key.ENTER: keys.ENTER, # == pyglet.window.key.RETURN
+ pyglet.window.key.NUM_ENTER: keys.ENTER,
+ pyglet.window.key.TAB: keys.TAB,
+}
+
+
+BUTTONMAP = { pyglet.window.mouse.LEFT:1,
+ pyglet.window.mouse.RIGHT:2,
+ pyglet.window.mouse.MIDDLE:3
+ }
+
+
+class ApplicationBackend(app.ApplicationBackend):
+
+ def __init__(self):
+ app.ApplicationBackend.__init__(self)
+
+ def _vispy_get_backend_name(self):
+ return 'Pyglet'
+
+ def _vispy_process_events(self):
+ return pyglet.app.platform_event_loop.step(0.0)
+
+ def _vispy_run(self):
+ return pyglet.app.run()
+
+ def _vispy_quit(self):
+ return pyglet.app.exit()
+
+ def _vispy_get_native_app(self):
+ return pyglet.app
+
+
+
+class CanvasBackend(pyglet.window.Window, app.CanvasBackend):
+ """ Pyglet backend for Canvas abstract class."""
+
+ def __init__(self, *args, **kwargs):
+ app.CanvasBackend.__init__(self)
+ # Initialize native widget, but default hidden and resizable
+ kwargs['visible'] = kwargs.get('visible', False)
+ kwargs['resizable'] = kwargs.get('resizable', True)
+ kwargs['vsync'] = kwargs.get('vsync', 0)
+ pyglet.window.Window.__init__(self, *args, **kwargs)
+
+ # We keep track of modifier keys so we can pass them to mouse_motion
+ self._current_modifiers = set()
+ #self._buttons_accepted = 0
+ self._draw_ok = False # whether it is ok to draw yet
+ self._pending_position = None
+
+ # Override these ...
+ def flip(self):
+ # Is called by event loop after each draw
+ pass
+ def on_draw(self):
+ # Is called by event loop after each event, whatever event ... really
+ if not self._draw_ok:
+ self._draw_ok = True
+ self.our_paint_func()
+ def draw_mouse_cursor(self):
+ # Prevent legacy OpenGL
+ pass
+
+
+ def _vispy_set_current(self):
+ # Make this the current context
+ self.switch_to()
+
+ def _vispy_swap_buffers(self):
+ # Swap front and back buffer
+ pyglet.window.Window.flip(self)
+
+ def _vispy_set_title(self, title):
+ # Set the window title. Has no effect for widgets
+ self.set_caption(title)
+
+ def _vispy_set_size(self, w, h):
+ # Set size of the widget or window
+ self.set_size(w, h)
+
+ def _vispy_set_position(self, x, y):
+ # Set positionof the widget or window. May have no effect for widgets
+ if self._draw_ok:
+ self.set_location(x, y)
+ else:
+ self._pending_position = x, y
+
+ def _vispy_set_visible(self, visible):
+ # Show or hide the window or widget
+ self.set_visible(visible)
+
+ def _vispy_update(self):
+ # Invoke a redraw
+ pyglet.clock.schedule_once(self.our_paint_func, 0.0)
+
+ def _vispy_close(self):
+ # Force the window or widget to shut down
+ self.close()
+
+ def _vispy_get_geometry(self):
+ # Should return widget (x, y, w, h)
+ xy = self.get_location()
+ wh = self.get_size()
+ return xy + wh
+
+ def _vispy_get_size(self):
+ x,y = self.get_size()
+ return x,y
+
+ def _vispy_get_position(self):
+ w,h = self.get_location()
+ return w,h
+
+
+ def on_show(self):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.initialize()
+ # Set location now if we must. For some reason we get weird
+ # offsets in viewport if set_location is called before the
+ # widget is shown.
+ if self._pending_position:
+ x,y = self._pending_position
+ self._pending_position = None
+ self.set_location(x,y)
+ # Redraw
+ self._vispy_update()
+
+ def on_close(self):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.close()
+ self.close() # Or the window wont close
+
+ def on_resize(self, w, h):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.resize(size=(w,h))
+ #self._vispy_update()
+
+ def our_paint_func(self, dummy=None):
+ if not self._draw_ok or self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.paint(region=None)#(0, 0, self.width, self.height))
+
+
+ def on_mouse_press(self, x, y, button, modifiers=None):
+ if self._vispy_canvas is None:
+ return
+ ev2 = self._vispy_mouse_press(
+ pos=(x, self.get_size()[1] - y),
+ button=BUTTONMAP.get(button, 0),
+ modifiers=self._modifiers(),
+ )
+# if ev2.handled:
+# self._buttons_accepted |= button
+
+ def on_mouse_release(self, x, y, button, modifiers=None):
+ if self._vispy_canvas is None:
+ return
+ if True:#(button & self._buttons_accepted) > 0:
+ self._vispy_mouse_release(
+ pos=(x, self.get_size()[1] - y),
+ button=BUTTONMAP.get(button, 0),
+ modifiers=self._modifiers(),
+ )
+ #self._buttons_accepted &= ~button
+
+ def on_mouse_motion(self, x, y, dx, dy):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_mouse_move(
+ pos=(x, self.get_size()[1] - y),
+ modifiers=self._modifiers(),
+ )
+
+ def on_mouse_drag(self, x, y, dx, dy, button, modifiers):
+ self.on_mouse_motion(x, y, dx, dy)
+
+ def on_mouse_scroll(self, x, y, scroll_x, scroll_y):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.mouse_wheel(
+ delta=(float(scroll_x), float(scroll_y)),
+ pos=(x, y),
+ modifiers=self._modifiers(),
+ )
+
+
+ def on_key_press(self, key, modifiers):
+ # Process modifiers
+ if key in ( pyglet.window.key.LCTRL, pyglet.window.key.RCTRL,
+ pyglet.window.key.LALT, pyglet.window.key.RALT,
+ pyglet.window.key.LSHIFT, pyglet.window.key.RSHIFT):
+ self._current_modifiers.add(key)
+ # Get txt
+ try:
+ text = chr(key)
+ except Exception:
+ text = ''
+ # Emit
+ self._vispy_canvas.events.key_press(
+ key=self._processKey(key),
+ text='', # Handlers that trigger on text wont see this event
+ modifiers=self._modifiers(modifiers),
+ )
+
+
+ def on_text(self, text):
+ # Typically this is called after on_key_press and before
+ # on_key_release
+ self._vispy_canvas.events.key_press(
+ key=None, # Handlers that trigger on key wont see this event
+ text=text,
+ modifiers=self._modifiers(),
+ )
+
+
+ def on_key_release(self, key, modifiers):
+ # Process modifiers
+ if key in ( pyglet.window.key.LCTRL, pyglet.window.key.RCTRL,
+ pyglet.window.key.LALT, pyglet.window.key.RALT,
+ pyglet.window.key.LSHIFT, pyglet.window.key.RSHIFT):
+ self._current_modifiers.discard(key)
+ # Get txt
+ try:
+ text = chr(key)
+ except Exception:
+ text = ''
+ # Emit
+ self._vispy_canvas.events.key_release(
+ key= self._processKey(key),
+ text=text,
+ modifiers=self._modifiers(modifiers)
+ )
+
+ def _processKey(self, key):
+ if 97 <= key <= 122:
+ key -= 32
+ if key in KEYMAP:
+ return KEYMAP[key]
+ elif key>=32 and key <= 127:
+ return keys.Key(chr(key))
+ else:
+ return None
+
+ def _modifiers(self, pygletmod=None):
+ mod = ()
+ if pygletmod is None:
+ pygletmod = self._current_modifiers
+ if isinstance(pygletmod, set):
+ for key in pygletmod:
+ mod += KEYMAP[key],
+ else:
+ if pygletmod & pyglet.window.key.MOD_SHIFT:
+ mod += keys.SHIFT,
+ if pygletmod & pyglet.window.key.MOD_CTRL:
+ mod += keys.CONTROL,
+ if pygletmod & pyglet.window.key.MOD_ALT:
+ mod += keys.ALT,
+ return mod
+
+
+
+class TimerBackend(app.TimerBackend):
+
+ def _vispy_start(self, interval):
+ interval = self._vispy_timer._interval
+ if self._vispy_timer.max_iterations == 1:
+ pyglet.clock.schedule_once(self._vispy_timer._timeout, interval)
+ else:
+ # seems pyglet does not give the expected behavior when interval==0
+ if interval == 0:
+ interval = 1e-9
+ pyglet.clock.schedule_interval(self._vispy_timer._timeout, interval)
+
+ def _vispy_stop(self):
+ pyglet.clock.unschedule(self._vispy_timer._timeout)
+
+ def _vispy_get_native_timer(self):
+ return pyglet.clock
diff --git a/vispy/app/backends/qt.py b/vispy/app/backends/qt.py
new file mode 100644
index 0000000..6e2a1d4
--- /dev/null
+++ b/vispy/app/backends/qt.py
@@ -0,0 +1,322 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+vispy backend for Qt (PySide and PyQt4).
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import vispy
+from vispy import app
+from vispy import keys
+from vispy.app.backends import ATTEMPTED_BACKENDS
+from vispy.util.six import text_type
+
+# Get what qt lib to try
+if len(ATTEMPTED_BACKENDS):
+ qt_lib = ATTEMPTED_BACKENDS[-1].lower()
+ if qt_lib.lower() == 'qt':
+ qt_lib = vispy.config['qt_lib'].lower()
+else:
+ qt_lib = 'any'
+
+# Import PySide or PyQt4
+if qt_lib in ('any', 'qt'):
+ try:
+ from PyQt4 import QtGui, QtCore, QtOpenGL
+ except ImportError:
+ from PySide import QtGui, QtCore, QtOpenGL
+elif qt_lib in ('pyqt', 'pyqt4'):
+ from PyQt4 import QtGui, QtCore, QtOpenGL
+elif qt_lib == 'pyside':
+ from PySide import QtGui, QtCore, QtOpenGL
+else:
+ raise Exception("Do not recognize Qt library '%s'. Options are 'pyqt4', 'pyside', or 'qt'])." % str(qt_lib))
+
+# todo: add support for distinguishing left and right shift/ctrl/alt keys.
+# Linux scan codes: (left, right)
+# Shift 50, 62
+# Ctrl 37, 105
+# Alt 64, 108
+KEYMAP = {
+ QtCore.Qt.Key_Shift: keys.SHIFT,
+ QtCore.Qt.Key_Control: keys.CONTROL,
+ QtCore.Qt.Key_Alt: keys.ALT,
+ QtCore.Qt.Key_AltGr: keys.ALT,
+ QtCore.Qt.Key_Meta: keys.META,
+
+ QtCore.Qt.Key_Left: keys.LEFT,
+ QtCore.Qt.Key_Up: keys.UP,
+ QtCore.Qt.Key_Right: keys.RIGHT,
+ QtCore.Qt.Key_Down: keys.DOWN,
+ QtCore.Qt.Key_PageUp: keys.PAGEUP,
+ QtCore.Qt.Key_PageDown: keys.PAGEDOWN,
+
+ QtCore.Qt.Key_Insert: keys.INSERT,
+ QtCore.Qt.Key_Delete: keys.DELETE,
+ QtCore.Qt.Key_Home: keys.HOME,
+ QtCore.Qt.Key_End: keys.END,
+
+ QtCore.Qt.Key_Escape: keys.ESCAPE,
+ QtCore.Qt.Key_Backspace: keys.BACKSPACE,
+
+ QtCore.Qt.Key_F1: keys.F1,
+ QtCore.Qt.Key_F2: keys.F2,
+ QtCore.Qt.Key_F3: keys.F3,
+ QtCore.Qt.Key_F4: keys.F4,
+ QtCore.Qt.Key_F5: keys.F5,
+ QtCore.Qt.Key_F6: keys.F6,
+ QtCore.Qt.Key_F7: keys.F7,
+ QtCore.Qt.Key_F8: keys.F8,
+ QtCore.Qt.Key_F9: keys.F9,
+ QtCore.Qt.Key_F10: keys.F10,
+ QtCore.Qt.Key_F11: keys.F11,
+ QtCore.Qt.Key_F12: keys.F12,
+
+ QtCore.Qt.Key_Space: keys.SPACE,
+ QtCore.Qt.Key_Enter: keys.ENTER,
+ QtCore.Qt.Key_Return: keys.ENTER,
+ QtCore.Qt.Key_Tab: keys.TAB,
+}
+
+BUTTONMAP = {0:0, 1:1, 2:2, 4:3, 8:4, 16:5}
+
+
+class ApplicationBackend(app.ApplicationBackend):
+
+ def __init__(self):
+ app.ApplicationBackend.__init__(self)
+
+ def _vispy_get_backend_name(self):
+ if 'pyside' in QtCore.__name__.lower():
+ return 'PySide (qt)'
+ else:
+ return 'PyQt4 (qt)'
+
+ def _vispy_process_events(self):
+ app = self._vispy_get_native_app()
+ app.flush()
+ app.processEvents()
+
+ def _vispy_run(self):
+ app = self._vispy_get_native_app()
+ if hasattr(app, '_in_event_loop') and app._in_event_loop:
+ pass # Already in event loop
+ else:
+ return app.exec_()
+
+ def _vispy_quit(self):
+ return self._vispy_get_native_app().quit()
+
+ def _vispy_get_native_app(self):
+ # Get native app in save way. Taken from guisupport.py
+ app = QtGui.QApplication.instance()
+ if app is None:
+ app = QtGui.QApplication([''])
+ # Store so it won't be deleted, but not on a visvis object,
+ # or an application may produce error when closed
+ QtGui._qApp = app
+ # Return
+ return app
+
+
+
+class CanvasBackend(QtOpenGL.QGLWidget, app.CanvasBackend):
+ """Qt backend for Canvas abstract class."""
+
+ def __init__(self, *args, **kwargs):
+ app.CanvasBackend.__init__(self)
+ QtOpenGL.QGLWidget.__init__(self, *args, **kwargs)
+ self.setAutoBufferSwap(False) # to make consistent with other backends
+ self.setMouseTracking(True)
+
+ def _vispy_set_current(self):
+ # Make this the current context
+ self.makeCurrent()
+
+ def _vispy_swap_buffers(self):
+ # Swap front and back buffer
+ self.swapBuffers()
+
+ def _vispy_set_title(self, title):
+ # Set the window title. Has no effect for widgets
+ self.setWindowTitle(title)
+
+ def _vispy_set_size(self, w, h):
+ # Set size of the widget or window
+ self.resize(w, h)
+
+ def _vispy_set_position(self, x, y):
+ # Set location of the widget or window. May have no effect for widgets
+ self.move(x, y)
+
+ def _vispy_set_visible(self, visible):
+ # Show or hide the window or widget
+ if visible:
+ self.show()
+ else:
+ self.hide()
+
+ def _vispy_update(self):
+ # Invoke a redraw
+ self.update()
+
+ def _vispy_close(self):
+ # Force the window or widget to shut down
+ self.close()
+
+ def _vispy_get_geometry(self):
+ # Should return widget (x, y, w, h)
+ g = self.geometry()
+ return (g.x(), g.y(), g.width(), g.height())
+
+ def _vispy_get_position(self):
+ g = self.geometry()
+ return g.x(), g.y()
+
+ def _vispy_get_size(self):
+ g = self.geometry()
+ return g.width(), g.height()
+
+ def initializeGL(self):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.initialize()
+
+ def resizeGL(self, w, h):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.resize(size=(w,h))
+
+ def paintGL(self):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.paint(region=None)#(0, 0, self.width(), self.height()))
+
+ def closeEvent(self, ev):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_canvas.events.close()
+
+ def mousePressEvent(self, ev):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_mouse_press(
+ native=ev,
+ pos=(ev.pos().x(), ev.pos().y()),
+ button=BUTTONMAP.get(ev.button(), 0),
+ modifiers = self._modifiers(ev),
+ )
+
+ def mouseReleaseEvent(self, ev):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_mouse_release(
+ native=ev,
+ pos=(ev.pos().x(), ev.pos().y()),
+ button=BUTTONMAP[ev.button()],
+ modifiers = self._modifiers(ev),
+ )
+
+ def mouseMoveEvent(self, ev):
+ if self._vispy_canvas is None:
+ return
+ self._vispy_mouse_move(
+ native=ev,
+ pos=(ev.pos().x(), ev.pos().y()),
+ modifiers=self._modifiers(ev),
+ )
+
+ def wheelEvent(self, ev):
+ if self._vispy_canvas is None:
+ return
+ # Get scrolling
+ deltax, deltay = 0.0, 0.0
+ if ev.orientation == QtCore.Qt.Horizontal:
+ deltax = ev.delta()/120.0
+ else:
+ deltay = ev.delta()/120.0
+ # Emit event
+ self._vispy_canvas.events.mouse_wheel(
+ native=ev,
+ delta=(deltax, deltay),
+ pos=(ev.pos().x(), ev.pos().y()),
+ modifiers=self._modifiers(ev),
+ )
+
+
+ def keyPressEvent(self, ev):
+ self._vispy_canvas.events.key_press(
+ native = ev,
+ key = self._processKey(ev),
+ text = text_type(ev.text()),
+ modifiers = self._modifiers(ev),
+ )
+
+ def keyReleaseEvent(self, ev):
+ #if ev.isAutoRepeat():
+ #return # Skip release auto repeat events
+ self._vispy_canvas.events.key_release(
+ native = ev,
+ key = self._processKey(ev),
+ text = text_type(ev.text()),
+ modifiers = self._modifiers(ev),
+ )
+
+ def _processKey(self, event):
+ # evaluates the keycode of qt, and transform to vispy key.
+ key = int(event.key())
+ if key in KEYMAP:
+ return KEYMAP[key]
+ elif key>=32 and key <= 127:
+ return keys.Key(chr(key))
+ else:
+ return None
+
+ def _modifiers(self, event):
+ # Convert the QT modifier state into a tuple of active modifier keys.
+ mod = ()
+ qtmod = event.modifiers()
+ if QtCore.Qt.ShiftModifier & qtmod:
+ mod += keys.SHIFT,
+ if QtCore.Qt.ControlModifier & qtmod:
+ mod += keys.CONTROL,
+ if QtCore.Qt.AltModifier & qtmod:
+ mod += keys.ALT,
+ if QtCore.Qt.MetaModifier & qtmod:
+ mod += keys.META,
+ return mod
+
+
+
+# class QtMouseEvent(MouseEvent):
+# # special subclass of MouseEvent for propagating acceptance info back to Qt.
+# @MouseEvent.handled.setter
+# def handled(self, val):
+# self._handled = val
+# if val:
+# self.qt_event.accept()
+# else:
+# self.qt_event.ignore()
+
+
+class TimerBackend(app.TimerBackend, QtCore.QTimer):
+ def __init__(self, vispy_timer):
+ if QtGui.QApplication.instance() is None:
+ global QAPP
+ QAPP = QtGui.QApplication([])
+ app.TimerBackend.__init__(self, vispy_timer)
+ QtCore.QTimer.__init__(self)
+ self.timeout.connect(self._vispy_timeout)
+
+ def _vispy_start(self, interval):
+ self.start(interval*1000.)
+
+ def _vispy_stop(self):
+ self.stop()
+
+ def _vispy_timeout(self):
+ self._vispy_timer._timeout()
+
diff --git a/vispy/app/backends/template.py b/vispy/app/backends/template.py
new file mode 100644
index 0000000..4c5eac9
--- /dev/null
+++ b/vispy/app/backends/template.py
@@ -0,0 +1,170 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" This module provides an template for creating backends for vispy.
+It clearly indicates what methods should be implemented and what events
+should be emitted.
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import vispy
+from vispy import app
+from vispy import keys
+
+# Map native keys to vispy keys
+KEYMAP = {
+ -1: keys.SHIFT,
+ -2: keys.CONTROL,
+ -3: keys.ALT,
+ -4: keys.META,
+
+ -5: keys.LEFT,
+ -6: keys.UP,
+ -7: keys.RIGHT,
+ -8: keys.DOWN,
+ -9: keys.PAGEUP,
+ -10: keys.PAGEDOWN,
+
+ -11: keys.INSERT,
+ -12: keys.DELETE,
+ -13: keys.HOME,
+ -14: keys.END,
+
+ -15: keys.ESCAPE,
+ -16: keys.BACKSPACE,
+
+ -17: keys.SPACE,
+ -18: keys.ENTER,
+ -19: keys.TAB,
+
+ -20: keys.F1,
+ -21: keys.F2,
+ -22: keys.F3,
+ -23: keys.F4,
+ -24: keys.F5,
+ -25: keys.F6,
+ -26: keys.F7,
+ -27: keys.F8,
+ -28: keys.F9,
+ -29: keys.F10,
+ -30: keys.F11,
+ -31: keys.F12,
+}
+
+
+
+class ApplicationBackend(app.ApplicationBackend):
+
+ def __init__(self):
+ app.ApplicationBackend.__init__(self)
+
+ def _vispy_get_backend_name(self):
+ return 'ThisBackendsName'
+
+ def _vispy_process_events(self):
+ raise NotImplementedError()
+
+ def _vispy_run(self):
+ raise NotImplementedError()
+
+ def _vispy_quit(self):
+ raise NotImplementedError()
+
+ def _vispy_get_native_app(self):
+ raise NotImplementedError()
+
+
+
+class CanvasBackend(app.CanvasBackend): # You can mix this class with the native widget
+
+ def __init__(self, vispy_canvas, *args, **kwargs):
+ #NativeWidgetClass.__init__(self, *args, **kwargs)
+ app.CanvasBackend.__init__(self, vispy_canvas)
+
+ def _vispy_set_current(self):
+ # Make this the current context
+ raise NotImplementedError()
+
+ def _vispy_swap_buffers(self):
+ # Swap front and back buffer
+ raise NotImplementedError()
+
+ def _vispy_set_title(self, title):
+ # Set the window title. Has no effect for widgets
+ raise NotImplementedError()
+
+ def _vispy_set_size(self, w, h):
+ # Set size of the widget or window
+ raise NotImplementedError()
+
+ def _vispy_set_position(self, x, y):
+ # Set location of the widget or window. May have no effect for widgets
+ raise NotImplementedError()
+
+ def _vispy_set_visible(self, visible):
+ # Show or hide the window or widget
+ raise NotImplementedError()
+
+ def _vispy_update(self):
+ # Invoke a redraw
+ raise NotImplementedError()
+
+ def _vispy_close(self):
+ # Force the window or widget to shut down
+ raise NotImplementedError()
+
+ def _vispy_get_size(self):
+ # Should return widget size
+ raise NotImplementedError()
+
+ def _vispy_get_position(self):
+ # Should return widget (x, y, w, h)
+ raise NotImplementedError()
+
+ def _vispy_get_native_canvas(self):
+ # Should return the native widget object.
+ # If this is self, this method can be omitted.
+ return self
+
+
+ def events_to_emit(self):
+ """ Shown here in one method, but most backends will probably
+ have one method for each event.
+ """
+ if self._vispy_canvas is None:
+ return
+
+ self._vispy_canvas.events.initialize()
+ self._vispy_canvas.events.resize(size=(w,h))
+ self._vispy_canvas.events.paint(region=None)
+ self._vispy_canvas.events.close()
+
+ self._vispy_canvas.events.mouse_press(pos=(x, y), button=1, modifiers=())
+ self._vispy_canvas.events.mouse_release(pos=(x, y), button=1, modifiers=())
+ self._vispy_canvas.events.mouse_move(pos=(x, y), modifiers=())
+ self._vispy_canvas.events.mouse_wheel(pos=(x, y), delta=(0,0), modifiers=())
+
+ self._vispy_canvas.events.key_press(key=key, text=text, modifiers=())
+ self._vispy_canvas.events.key_release(key=key, text=text, modifiers=())
+
+
+
+class TimerBackend(app.TimerBackend): # Can be mixed with native timer class
+ def __init__(self, vispy_timer):
+ app.TimerBackend.__init__(self, vispy_timer)
+
+ def _vispy_start(self, interval):
+ raise NotImplementedError()
+
+ def _vispy_stop(self):
+ raise NotImplementedError()
+
+ def _vispy_timeout(self):
+ raise NotImplementedError()
+
+ def _vispy_get_native_timer(self):
+ # Should return the native widget object.
+ # If this is self, this method can be omitted.
+ return self
diff --git a/vispy/app/canvas.py b/vispy/app/canvas.py
new file mode 100644
index 0000000..02a2f00
--- /dev/null
+++ b/vispy/app/canvas.py
@@ -0,0 +1,616 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+from __future__ import print_function, division, absolute_import
+
+from vispy.util.event import EmitterGroup, Event
+import vispy
+import numpy as np
+
+# todo: add functions for asking about current mouse/keyboard state
+# todo: add hover enter/exit events
+# todo: add focus events
+
+
+
+class Canvas(object):
+ """ Representation of a GUI element that can be rendered to by an OpenGL
+ context. The args and kwargs are used to instantiate the native widget.
+
+ Receives the following events:
+ initialize, resize, paint,
+ mouse_press, mouse_release, mouse_move, mouse_wheel,
+ key_press, key_release,
+ stylus, touch, close
+
+ Keyword arguments
+ -----------------
+ title :: str
+ The widget title
+ app :: Application
+ Give vispy Application instance to use as a backend.
+ (vispy.app is used by default.)
+ create_native :: bool
+ Whether to create the widget immediately. Default True.
+ size :: (width, height)
+ The size of the window.
+ position :: (x, y)
+ The position of the window in screen coordinates.
+ show :: bool
+ Whether to show the widget immediately. Default False.
+ autoswap :: bool
+ Whether to swap the buffers automatically after a paint event.
+ Default True.
+
+ """
+
+ def __init__(self, *args, **kwargs):
+ self.events = EmitterGroup(source=self,
+ initialize=Event,
+ resize=ResizeEvent,
+ paint=PaintEvent,
+ mouse_press=MouseEvent,
+ mouse_release=MouseEvent,
+ mouse_move=MouseEvent,
+ mouse_wheel=MouseEvent,
+ key_press=KeyEvent,
+ key_release=KeyEvent,
+ stylus=Event,
+ touch=Event,
+ close=Event,
+ )
+
+ # Store input and initialize backend attribute
+ self._args = args
+ self._kwargs = kwargs
+ self._backend = None
+
+ # Extract kwargs that are for us
+ # Most are used in _set_backend
+ self._our_kwargs = {}
+ self._our_kwargs['title'] = kwargs.pop('title', 'Vispy canvas')
+ self._our_kwargs['show'] = kwargs.pop('show', False)
+ self._our_kwargs['autoswap'] = kwargs.pop('autoswap', True)
+ self._our_kwargs['size'] = kwargs.pop('size', (800,600))
+ self._our_kwargs['position'] = kwargs.pop('position', None)
+
+ # Initialise some values
+ self._title = ''
+
+ # Get app instance
+ self._app = kwargs.pop('app', vispy.app.default_app)
+
+ # Create widget now
+ if 'native' in kwargs:
+ self._set_backend(kwargs.pop('native'))
+ else:
+ self.create_native()
+
+
+ def create_native(self):
+ """ Create the native widget if not already done so. If the widget
+ is already created, this function does nothing.
+ """
+ if self._backend is None:
+ # Make sure that the app is active
+ self._app.use()
+ self._app.native
+ # Instantiate the backed with the right class
+ self._set_backend(self._app.backend_module.CanvasBackend(*self._args, **self._kwargs))
+
+ # Clean up
+ del self._args
+ del self._kwargs
+
+ def _set_backend(self, backend):
+ self._backend = backend
+ if backend is not None:
+ backend._vispy_canvas = self
+ else:
+ return
+
+ # Initialize it
+ self.title = self._our_kwargs['title']
+ self.size = self._our_kwargs['size']
+ if self._our_kwargs['position']:
+ self.position = self._our_kwargs['position']
+ if self._our_kwargs['autoswap']:
+ fun = lambda x:self._backend._vispy_swap_buffers()
+ self.events.paint.callbacks.append(fun) # Append callback to end
+ if self._our_kwargs['show']:
+ self.show()
+
+
+ @property
+ def app(self):
+ """ The vispy Application instance on which this Canvas is based.
+ """
+ return self._app
+
+
+ @property
+ def native(self):
+ """ The native widget object on which this Canvas is based.
+ """
+ return self._backend._vispy_get_native_canvas()
+
+
+ def connect(self, fun):
+ """ Connect a function to an event. The name of the function
+ should be on_X, with X the name of the event (e.g. 'on_paint').
+
+ This method is typically used as a decorater on a function
+ definition for an event handler.
+ """
+ # Get and check name
+ name = fun.__name__
+ if not name.startswith('on_'):
+ raise ValueError('When connecting a function based on its name, the name should start with "on_"')
+ eventname = name[3:]
+ # Get emitter
+ try:
+ emitter = self.events[eventname]
+ except KeyError:
+ raise ValueError('Event "%s" not available on this canvas.' % eventname)
+ # Connect
+ emitter.connect(fun)
+
+
+
+ # ---------------------------------------------------------------- size ---
+ @property
+ def size(self):
+ """ The size of canvas/window """
+ return self._backend._vispy_get_size()
+
+ @size.setter
+ def size(self, size):
+ return self._backend._vispy_set_size(size[0],size[1])
+
+
+ # ------------------------------------------------------------ position ---
+ @property
+ def position(self):
+ """ The position of canvas/window relative to screen """
+ return self._backend._vispy_get_position()
+
+ @position.setter
+ def position(self, position):
+ return self._backend._vispy_set_position(position[0],position[1])
+
+ # --------------------------------------------------------------- title ---
+ @property
+ def title(self):
+ """ The title of canvas/window """
+ return self._title
+
+ @title.setter
+ def title(self, title):
+ self._title = title
+ self._backend._vispy_set_title(title)
+
+
+ def swap_buffers(self):
+ """ Swap GL buffers such that the offscreen buffer becomes visible.
+ """
+ #if not self._our_kwargs['autoswap']:
+ self._backend._vispy_swap_buffers()
+
+
+ def resize(self, w, h):
+ """ Resize the canvas givan size """
+
+ return self._backend._vispy_set_size(w, h)
+
+
+ def move(self, x, y):
+ """ Move the widget or window to the given position """
+
+ self._backend._vispy_set_position(x,y)
+
+
+ def show(self, visible=True):
+ """ Show (or hide) the canvas """
+
+ return self._backend._vispy_set_visible(visible)
+
+
+ def update(self):
+ """ Inform the backend that the Canvas needs to be repainted """
+
+ return self._backend._vispy_update()
+
+
+ def close(self):
+ """ Close the canvas """
+
+ self._backend._vispy_close()
+
+
+ #def mouse_event(self, event):
+ #"""Called when a mouse input event has occurred (the mouse has moved,
+ #a button was pressed/released, or the wheel has moved)."""
+
+ #def key_event(self, event):
+ #"""Called when a keyboard event has occurred (a key was pressed or
+ #released while the canvas has focus)."""
+
+ #def touch_event(self, event):
+ #"""Called when the user touches the screen over a Canvas.
+
+ #Event properties:
+
+ #event.touches
+ #[ (x,y,pressure), ... ]
+ #"""
+
+ #def stylus_event(self, event):
+ #"""Called when a stylus has been used to interact with the Canvas.
+
+ #Event properties:
+
+ #event.device
+ #event.pos (x,y)
+ #event.pressure
+ #event.angle
+
+ #"""
+
+
+ #def initialize_event(self, event):
+ #"""Called when the OpenGL context is initialy made available for this
+ #Canvas."""
+
+ #def resize_event(self, event):
+ #"""Called when the Canvas is resized.
+
+ #Event properties:
+
+ #event.size (w,h)
+ #"""
+
+ #def paint_event(self, event):
+ #"""Called when all or part of the Canvas needs to be repainted.
+
+ #Event properties:
+
+ #event.region (x,y,w,h) region of Canvas requiring repaint
+ #"""
+
+
+
+class CanvasBackend(object):
+ """ CanvasBackend(vispy_canvas, *args, **kwargs)
+
+ Abstract class that provides an interface between backends and Canvas.
+ Each backend must implement a subclass of CanvasBackend, and
+ implement all its _vispy_xxx methods. Also, also a backend must
+ make sure to generate the following events: 'initialize', 'resize',
+ 'paint', 'mouse_press', 'mouse_release', 'mouse_move',
+ 'mouse_wheel', 'key_press', 'key_release', 'close'.
+ """
+
+ def __init__(self, *args, **kwargs):
+ # Initially the backend starts out with no canvas.
+ # Canvas takes care of setting this for us.
+ self._vispy_canvas = None
+
+ # Data used in the construction of new mouse events
+ self._vispy_mouse_data = {
+ 'buttons': [],
+ 'press_event': None,
+ 'last_event': None,
+ }
+
+ def _vispy_set_current(self):
+ # todo: this is currently not used internally
+ # --> I think the backends should call this themselves before emitting the paint event
+ # Make this the current context
+ raise NotImplementedError()
+
+ def _vispy_swap_buffers(self):
+ # Swap front and back buffer
+ raise NotImplementedError()
+
+ def _vispy_set_title(self, title):
+ # Set the window title. Has no effect for widgets
+ raise NotImplementedError()
+
+ def _vispy_set_size(self, w, h):
+ # Set size of the widget or window
+ raise NotImplementedError()
+
+ def _vispy_set_position(self, x, y):
+ # Set location of the widget or window. May have no effect for widgets
+ raise NotImplementedError()
+
+ def _vispy_set_visible(self, visible):
+ # Show or hide the window or widget
+ raise NotImplementedError()
+
+ def _vispy_update(self):
+ # Invoke a redraw
+ raise NotImplementedError()
+
+ def _vispy_close(self):
+ # Force the window or widget to shut down
+ raise NotImplementedError()
+
+ def _vispy_get_size(self):
+ # Should return widget size
+ raise NotImplementedError()
+
+ def _vispy_get_position(self):
+ # Should return widget position
+ raise NotImplementedError()
+
+ def _vispy_get_native_canvas(self):
+ # Should return the native widget object
+ # Most backends would not need to implement this
+ return self
+
+ def _vispy_mouse_press(self, **kwds):
+ # default method for delivering mouse press events to the canvas
+ kwds.update(self._vispy_mouse_data)
+ ev = self._vispy_canvas.events.mouse_press(**kwds)
+ if self._vispy_mouse_data['press_event'] is None:
+ self._vispy_mouse_data['press_event'] = ev
+
+ self._vispy_mouse_data['buttons'].append(ev.button)
+ self._vispy_mouse_data['last_event'] = ev
+ return ev
+
+ def _vispy_mouse_move(self, **kwds):
+ # default method for delivering mouse move events to the canvas
+ kwds.update(self._vispy_mouse_data)
+
+ # Break the chain of prior mouse events if no buttons are pressed
+ # (this means that during a mouse drag, we have full access to every
+ # move event generated since the drag started)
+ if self._vispy_mouse_data['press_event'] is None:
+ last_event = self._vispy_mouse_data['last_event']
+ if last_event is not None:
+ last_event._forget_last_event()
+
+ ev = self._vispy_canvas.events.mouse_move(**kwds)
+ self._vispy_mouse_data['last_event'] = ev
+ return ev
+
+ def _vispy_mouse_release(self, **kwds):
+ # default method for delivering mouse release events to the canvas
+ kwds.update(self._vispy_mouse_data)
+ ev = self._vispy_canvas.events.mouse_release(**kwds)
+ if ev.button == self._vispy_mouse_data['press_event'].button:
+ self._vispy_mouse_data['press_event'] = None
+
+ self._vispy_mouse_data['buttons'].remove(ev.button)
+ self._vispy_mouse_data['last_event'] = ev
+ return ev
+
+
+
+## Event subclasses specific to the Canvas
+
+
+class MouseEvent(Event):
+ """ Class describing mouse events.
+
+ Note that each event object has an attribute for each of the input
+ arguments listed below.
+
+ Input arguments
+ ---------------
+ type : str
+ String indicating the event type (e.g. mouse_press, key_release)
+ pos : (int, int)
+ The position of the mouse (in screen coordinates).
+ button : int
+ The button that generated this event (can be None).
+ Left=1, right=2, middle=3.
+ buttons : [int, ...]
+ The list of buttons depressed during this event.
+ modifiers : tuple of Key instances
+ Tuple that specifies which modifier keys were pressed down at the
+ time of the event (shift, control, alt, meta).
+ delta : (float, float)
+ The amount of scrolling in horizontal and vertical direction. One
+ "tick" corresponds to a delta of 1.0.
+ press_event : MouseEvent
+ The press event that was generated at the start of the current drag,
+ if any.
+ last_event : MouseEvent
+ The MouseEvent immediately preceding the current event. During drag
+ operations, all generated events retain their last_event properties,
+ allowing the entire drag to be reconstructed.
+ native : object (optional)
+ The native GUI event object
+ **kwds : keyword arguments
+ All extra keyword arguments become attributes of the event object.
+
+ """
+
+ def __init__(self, type, pos=None, button=None, buttons=None,
+ modifiers=None, delta=None, last_event=None, press_event=None,
+ **kwds):
+ Event.__init__(self, type, **kwds)
+ self._pos = (0,0) if (pos is None) else (pos[0], pos[1])
+ self._button = int(button) if (button is not None) else 0
+ self._buttons = [] if (buttons is None) else buttons
+ self._modifiers = tuple( modifiers or () )
+ self._delta = (0.0,0.0) if (delta is None) else (delta[0], delta[1])
+ self._last_event = last_event
+ self._press_event = press_event
+
+ @property
+ def pos(self):
+ return self._pos
+
+ @property
+ def button(self):
+ return self._button
+
+ @property
+ def buttons(self):
+ return self._buttons
+
+ @property
+ def modifiers(self):
+ return self._modifiers
+
+ @property
+ def delta(self):
+ return self._delta
+
+ @property
+ def press_event(self):
+ return self._press_event
+
+ @property
+ def last_event(self):
+ return self._last_event
+
+ def _forget_last_event(self):
+ # Needed to break otherwise endless last-event chains
+ self._last_event = None
+
+ @property
+ def is_dragging(self):
+ """ Indicates whether this event is part of a mouse drag operation.
+ """
+ return self.press_event is not None
+
+ def drag_events(self):
+ """ Return a list of all mouse events in the current drag operation.
+
+ Returns None if there is no current drag operation.
+ """
+ if not self.is_dragging:
+ return None
+
+ event = self
+ events = []
+ while True:
+ if event is None:
+ break
+ events.append(event)
+ event = event.last_event
+
+ return events[::-1]
+
+ def trail(self):
+ """ Return an (N, 2) array of mouse coordinates for every event in the
+ current mouse drag operation.
+
+ Returns None if there is no current drag operation.
+ """
+ events = self.drag_events()
+ if events is None:
+ return None
+
+ trail = np.empty((len(events), 2), dtype=int)
+ for i, ev in enumerate(events):
+ trail[i] = ev.pos
+
+ return trail
+
+
+
+class KeyEvent(Event):
+ """ Class describing mouse events.
+
+ Note that each event object has an attribute for each of the input
+ arguments listed below.
+
+ Input arguments
+ ---------------
+ type : str
+ String indicating the event type (e.g. mouse_press, key_release)
+ key : vispy.keys.Key instance
+ The Key object for this event. Can be compared to string names.
+ text : str
+ The text representation of the key (can be an empty string).
+ modifiers : tuple of Key instances
+ Tuple that specifies which modifier keys were pressed down at the
+ time of the event (shift, control, alt, meta).
+ native : object (optional)
+ The native GUI event object
+ **kwds : keyword arguments
+ All extra keyword arguments become attributes of the event object.
+ """
+
+ def __init__(self, type, key=None, text='', modifiers=None, **kwds):
+ Event.__init__(self, type, **kwds)
+ self._key = key
+ self._text = text
+ self._modifiers = tuple( modifiers or () )
+
+ @property
+ def key(self):
+ return self._key
+
+ @property
+ def text(self):
+ return self._text
+
+ @property
+ def modifiers(self):
+ return self._modifiers
+
+
+
+class ResizeEvent(Event):
+ """ Class describing canvas resize events.
+
+ Note that each event object has an attribute for each of the input
+ arguments listed below.
+
+ Input arguments
+ ---------------
+ type : str
+ String indicating the event type (e.g. mouse_press, key_release)
+ size : (int, int)
+ The new size of the Canvas.
+ native : object (optional)
+ The native GUI event object
+ **kwds : extra keyword arguments
+ All extra keyword arguments become attributes of the event object.
+ """
+
+ def __init__(self, type, size=None, **kwds):
+ Event.__init__(self, type, **kwds)
+ self._size = tuple(size)
+
+ @property
+ def size(self):
+ return self._size
+
+
+class PaintEvent(Event):
+ """ Class describing canvas paint events.
+ This type of event is sent to Canvas.events.paint when a repaint
+ is required.
+
+ Note that each event object has an attribute for each of the input
+ arguments listed below.
+
+ Input arguments
+ ---------------
+ type : str
+ String indicating the event type (e.g. mouse_press, key_release)
+ region : (int, int, int, int) or None
+ The region of the canvas which needs to be repainted (x, y, w, h).
+ If None, the entire canvas must be repainted.
+ native : object (optional)
+ The native GUI event object
+ **kwds : extra keyword arguments
+ All extra keyword arguments become attributes of the event object.
+ """
+
+ def __init__(self, type, region=None, **kwds):
+ Event.__init__(self, type, **kwds)
+ self._region = region
+
+ @property
+ def region(self):
+ return self._region
diff --git a/vispy/app/tests/qt-designer.ui b/vispy/app/tests/qt-designer.ui
new file mode 100644
index 0000000..c84cae6
--- /dev/null
+++ b/vispy/app/tests/qt-designer.ui
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Form</class>
+ <widget class="QWidget" name="Form">
+ <property name="geometry">
+ <rect>
+ <x>0</x>
+ <y>0</y>
+ <width>609</width>
+ <height>432</height>
+ </rect>
+ </property>
+ <property name="windowTitle">
+ <string>Form</string>
+ </property>
+ <layout class="QGridLayout" name="gridLayout">
+ <item row="0" column="0">
+ <widget class="QLabel" name="label">
+ <property name="text">
+ <string>For testing that vispy Canvas can be embedded in Qt designer GUI</string>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="0">
+ <widget class="QFrame" name="frame">
+ <property name="frameShape">
+ <enum>QFrame::StyledPanel</enum>
+ </property>
+ <property name="frameShadow">
+ <enum>QFrame::Raised</enum>
+ </property>
+ <layout class="QGridLayout" name="gridLayout_2">
+ <item row="0" column="0">
+ <widget class="CanvasBackend" name="canvas" native="true">
+ <property name="sizePolicy">
+ <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+ <horstretch>0</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ <customwidgets>
+ <customwidget>
+ <class>CanvasBackend</class>
+ <extends>QWidget</extends>
+ <header>vispy.app.backends.qt</header>
+ <container>1</container>
+ </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/vispy/app/tests/test_backends.py b/vispy/app/tests/test_backends.py
new file mode 100644
index 0000000..b40803c
--- /dev/null
+++ b/vispy/app/tests/test_backends.py
@@ -0,0 +1,140 @@
+""" Tests to quickly see if the backends look good.
+This tests only to see if all the necessary methods are implemented,
+whether all the right events are mentioned, and whether the keymap
+contains all keys that should be supported.
+
+This test basically checks whether nothing was forgotten, not that the
+implementation is corect.
+
+"""
+
+import sys
+
+import vispy
+from vispy import keys
+
+class BaseTestmodule:
+
+ def __init__(self, module=None):
+ self._module = module
+ if module is None:
+ print("Skipping %s." % self.__class__.__name__)
+ self.test_events = lambda : None
+ self.test_keymap = lambda : None
+ self.test_methods = lambda : None
+
+
+ def test_keymap(self):
+ """ Test that the keymap contains all keys supported by vispy.
+ """
+ keymap = self._module.KEYMAP
+ vispy_keys = keymap.values()
+ for keyname in dir(keys):
+ if keyname.upper() != keyname:
+ continue
+ key = getattr(keys, keyname)
+ assert key in vispy_keys
+
+
+ def test_methods(self):
+ """ Test that all _vispy_x methods are there.
+ """
+ exceptions = ('_vispy_get_native_canvas', '_vispy_get_native_timer', '_vispy_get_native_app',
+ '_vispy_mouse_move', '_vispy_mouse_press', '_vispy_mouse_release')
+
+ Klass = self._module.CanvasBackend
+ KlassRef = vispy.app.canvas.CanvasBackend
+ for key in dir(KlassRef):
+ if not key.startswith('__'):
+ method = getattr(Klass, key)
+ if key not in exceptions:
+ if hasattr(method, '__module__'):
+ mod_str = method.__module__ # Py3k
+ else:
+ mod_str = method.im_func.__module__
+ assert mod_str == self._module.__name__, "Method %s.%s not defined in %s"%(Klass, key, self._module.__name__)
+
+ Klass = self._module.TimerBackend
+ KlassRef = vispy.app.timer.TimerBackend
+ for key in dir(KlassRef):
+ if not key.startswith('__'):
+ method = getattr(Klass, key)
+ if key not in exceptions:
+ if hasattr(method, '__module__'):
+ assert method.__module__ == self._module.__name__ # Py3k
+ else:
+ assert method.im_func.__module__ == self._module.__name__
+
+ Klass = self._module.ApplicationBackend
+ KlassRef = vispy.app.application.ApplicationBackend
+ for key in dir(KlassRef):
+ if not key.startswith('__'):
+ method = getattr(Klass, key)
+ if key not in exceptions:
+ if hasattr(method, '__module__'):
+ assert method.__module__ == self._module.__name__ # Py3k
+ else:
+ assert method.im_func.__module__ == self._module.__name__
+
+
+ def test_events(self):
+ """ Test that all events seem to be emitted.
+ """
+ # Get text
+ fname = self._module.__file__.strip('c')
+ text = open(fname, 'rb').read().decode('utf-8')
+
+ canvas = vispy.app.Canvas(native=None)
+ # Stylus and touch are ignored because they are not yet implemented.
+ # Mouse events are emitted from the CanvasBackend base class.
+ ignore = set(['stylus', 'touch', 'mouse_press', 'mouse_move', 'mouse_release'])
+ eventNames = set(canvas.events._emitters.keys()) - ignore
+
+ for name in eventNames:
+ assert 'events.%s'%name in text, 'events.%s does not appear in %s'%(name, fname)
+
+
+
+class Test_TemplateBackend(BaseTestmodule):
+ def __init__(self):
+ from vispy.app.backends import template
+ BaseTestmodule.__init__(self, template)
+
+class Test_QtBackend(BaseTestmodule):
+ def __init__(self):
+ from vispy.app.backends import qt
+ BaseTestmodule.__init__(self, qt)
+
+class Test_PygletBackend(BaseTestmodule):
+ def __init__(self):
+ if sys.version_info[0] == 3:
+ pyglet = None
+ else:
+ try:
+ from vispy.app.backends import pyglet
+ except Exception as err:
+ print("Error imporing pyglet:\n%s" % str(err))
+ pyglet = None
+ BaseTestmodule.__init__(self, pyglet)
+
+class Test_GlutBackend(BaseTestmodule):
+ def __init__(self):
+ from vispy.app.backends import glut
+ BaseTestmodule.__init__(self, glut)
+
+
+
+if __name__ == '__main__':
+
+ for klass in [ Test_TemplateBackend,
+ Test_QtBackend,
+ Test_PygletBackend,
+ Test_GlutBackend
+ ]:
+ test = klass()
+ test.test_keymap()
+ test.test_methods()
+ test.test_events()
+ print('ok %s' % klass.__name__)
+
+
\ No newline at end of file
diff --git a/vispy/app/tests/test_qt.py b/vispy/app/tests/test_qt.py
new file mode 100644
index 0000000..3ec663a
--- /dev/null
+++ b/vispy/app/tests/test_qt.py
@@ -0,0 +1,53 @@
+# Import PyQt4, vispy will see this and use that as a backend
+# Also import QtOpenGL, because vispy needs it.
+
+# This is a strange test: vispy does not need designer or uic stuff to run!
+
+
+try:
+ from PyQt4 import QtCore, QtGui, QtOpenGL, uic
+ test_uic = True
+except ImportError:
+ from PySide import QtCore, QtGui, QtOpenGL
+ test_uic = False
+
+
+import OpenGL.GL as gl
+from vispy.app import Canvas
+import os
+
+
+app = QtGui.QApplication([])
+
+def test_qt_designer():
+ """Embed Canvas via Qt Designer"""
+
+ if not test_uic:
+ return
+
+ path = os.path.dirname(__file__)
+ WindowTemplate, TemplateBaseClass = uic.loadUiType(os.path.join(path, 'qt-designer.ui'))
+
+ class MainWindow(TemplateBaseClass):
+ def __init__(self):
+ TemplateBaseClass.__init__(self)
+
+ self.ui = WindowTemplate()
+ self.ui.setupUi(self)
+ self.show()
+
+ global win
+ win = MainWindow()
+ win.show()
+ canvas = Canvas(native=win.ui.canvas)
+
+ @canvas.events.paint.connect
+ def on_paint(ev):
+ gl.glClearColor(0.0, 0.0, 0.0, 0.0)
+ gl.glClear(gl.GL_COLOR_BUFFER_BIT)
+ canvas.swap_buffers()
+
+
+
+if __name__ == '__main__':
+ test_qt_designer()
diff --git a/vispy/app/timer.py b/vispy/app/timer.py
new file mode 100644
index 0000000..5d04540
--- /dev/null
+++ b/vispy/app/timer.py
@@ -0,0 +1,155 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+from __future__ import print_function, division, absolute_import
+
+import vispy
+from vispy.util.event import Event, EmitterGroup
+from vispy.util.ptime import time as precision_time
+
+
+class Timer(object):
+ """Timer used to schedule events in the future or on a repeating schedule.
+ """
+ def __init__(self, interval=0.0, connect=None, iterations=-1, start=False, app=None):
+ self.events = EmitterGroup(source=self,
+ start=Event,
+ stop=Event,
+ timeout=Event)
+ #self.connect = self.events.timeout.connect
+ #self.disconnect = self.events.timeout.disconnect
+
+ # Get app instance and make sure that it has an associated backend
+ self._app = vispy.app.default_app if app is None else app
+ self._app.use()
+
+ # Instantiate the backed with the right class
+ self._backend = self._app.backend_module.TimerBackend(self)
+
+ self._interval = interval
+ self._running = False
+ self._last_emit_time = None
+ self.iter_count = 0
+ self.max_iterations = iterations
+ if connect is not None:
+ self.connect(connect)
+ if start:
+ self.start()
+
+
+ @property
+ def app(self):
+ """ The vispy Application instance on which this Timer is based.
+ """
+ return self._app
+
+
+ @property
+ def interval(self):
+ return self._interval
+
+ @interval.setter
+ def interval(self, val):
+ self._interval = val
+ if self.running:
+ self.stop()
+ self.start()
+
+ @property
+ def running(self):
+ return self._running
+
+ def start(self, interval=None, iterations=None):
+ """Start the timer.
+
+ A timeout event will be generated every *interval* seconds.
+ If *interval* is None, then self.interval will be used.
+
+ If *iterations* is specified, the timer will stop after
+ emitting that number of events. If unspecified, then
+ the previous value of self.iterations will be used. If the value is
+ negative, then the timer will continue running until stop() is called.
+ """
+ self.iter_count = 0
+ if interval is not None:
+ self.interval = interval
+ if iterations is not None:
+ self.max_iterations = iterations
+ self._backend._vispy_start(self.interval)
+ self._running = True
+ self._last_emit_time = None
+ self.events.start(type='timer_start')
+
+
+ def stop(self):
+ """Stop the timer."""
+ self._backend._vispy_stop()
+ self._running = False
+ self.events.stop(type='timer_stop')
+
+ # use timer.app.run() and .quit() instead.
+ #def run_event_loop(self):
+ #"""Execute the event loop for this Timer's backend.
+ #"""
+ #return self._backend._vispy_run()
+
+ #def quit_event_loop(self):
+ #"""Exit the event loop for this Timer's backend.
+ #"""
+ #return self._backend._vispy_quit()
+
+ @property
+ def native(self):
+ """ The native timer on which this Timer is based.
+ """
+ return self._backend._vispy_get_native_timer()
+
+ def _timeout(self, *args):
+ # called when the backend timer has triggered.
+ if not self.running:
+ return
+ if self.max_iterations >= 0 and self.iter_count >= self.max_iterations:
+ self.stop()
+ return
+
+ # compute dt since last event
+ now = precision_time()
+ if self._last_emit_time is None:
+ dt = None
+ else:
+ dt = now - self._last_emit_time
+ self._last_emit_time = now
+
+ self.events.timeout(type='timer_timeout', iteration=self.iter_count, dt=dt)
+ self.iter_count += 1
+
+ def connect(self, callback):
+ """ Alias for self.events.timeout.connect() """
+ return self.events.timeout.connect(callback)
+
+ def disconnect(self, callback=None):
+ """ Alias for self.events.timeout.disconnect() """
+ return self.events.timeout.disconnect(callback)
+
+
+class TimerBackend(object):
+ """ TimerBackend(vispy_timer)
+
+ Abstract class that provides an interface between backends and Timer.
+ Each backend must implement a subclass of TimerBackend, and
+ implement all its _vispy_xxx methods.
+ """
+ def __init__(self, vispy_timer):
+ self._vispy_timer = vispy_timer
+
+ def _vispy_start(self, interval):
+ raise Exception("Method must be reimplemented in subclass.")
+
+ def _vispy_stop(self):
+ raise Exception("Method must be reimplemented in subclass.")
+
+ def _vispy_get_native_timer(self):
+ # Should return the native timer object
+ # Most backends would not need to implement this
+ return self
diff --git a/vispy/data/crate.bz2 b/vispy/data/crate.bz2
new file mode 100644
index 0000000..e3fe0ec
Binary files /dev/null and b/vispy/data/crate.bz2 differ
diff --git a/vispy/data/cube.obj b/vispy/data/cube.obj
new file mode 100644
index 0000000..1496c12
--- /dev/null
+++ b/vispy/data/cube.obj
@@ -0,0 +1,36 @@
+# A cube with normals and texcoords
+# from http://www.3dvia.com/models/B10B55A7B98B9DAF
+
+v -0.8 -0.8 -0.8
+v -0.8 -0.8 0.8
+v -0.8 0.8 -0.8
+v -0.8 0.8 0.8
+v 0.8 -0.8 -0.8
+v 0.8 -0.8 0.8
+v 0.8 0.8 -0.8
+v 0.8 0.8 0.8
+
+vn 0.0 0.0 1.0
+vn 0.0 0.0 -1.0
+vn 0.0 1.0 0.0
+vn 0.0 -1.0 0.0
+vn 1.0 0.0 0.0
+vn -1.0 0.0 0.0
+
+vt 0.0 0.0
+vt 1.0 0.0
+vt 1.0 1.0
+vt 0.0 1.0
+
+f 1/1/2 7/3/2 5/2/2
+f 1/1/2 3/4/2 7/3/2
+f 1/1/6 4/3/6 3/4/6
+f 1/1/6 2/2/6 4/3/6
+f 3/1/3 8/3/3 7/4/3
+f 3/1/3 4/2/3 8/3/3
+f 5/2/5 7/3/5 8/4/5
+f 5/2/5 8/4/5 6/1/5
+f 1/1/4 5/2/4 6/3/4
+f 1/1/4 6/3/4 2/4/4
+f 2/1/1 6/2/1 8/3/1
+f 2/1/1 8/3/1 4/4/1
diff --git a/vispy/data/triceratops.obj b/vispy/data/triceratops.obj
new file mode 100644
index 0000000..51f93db
--- /dev/null
+++ b/vispy/data/triceratops.obj
@@ -0,0 +1,8492 @@
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diff --git a/vispy/gloo/__init__.py b/vispy/gloo/__init__.py
new file mode 100644
index 0000000..5b7d2c7
--- /dev/null
+++ b/vispy/gloo/__init__.py
@@ -0,0 +1,88 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+Object oriented interface to OpenGL.
+
+This module implements classes for the things that are "objetcs" in
+OpenGL, such as textures, FBO's, VBO's and shaders. Further, some
+convenience classes are implemented (like the collection class?).
+
+This set of classes provides a friendly (Pythonic) interface
+to OpenGL, and is designed to provide OpenGL's full functionality.
+
+All classes inherit from GLObject, which provide a basic interface,
+enabling activatinge and deleting the object. Central to each
+visualization is the Program. Other objects, such as Texture2D and
+VertexBuffer should be set as uniforms and attributes of the Program
+object.
+
+Example::
+
+ # Init
+ program = gloo.Program(vertex_source, fragment_source)
+ program['a_position'] = gloo.VertexBuffer(my_positions_array)
+ program['s_texture'] = gloo.Texture2D(my_image)
+ ...
+
+ # Paint event handler
+ program['u_color'] = 0.0, 1.0, 0.0
+ program.draw(gl.GL_TRIANGLES)
+
+.. Note::
+
+ With vispy.gloo we strive to offer a Python interface that provides
+ the full functionality of OpenGL. However, this layer is a work in
+ progress and there are yet a few known limitations. Most notably:
+
+ * TextureCubeMap is not yet implemented
+ * FBO's can only do 2D textures (not 3D textures or cube maps)
+ * Sharing of Shaders and RenderBuffers (between multiple Program's and
+ FrameBuffers, respecitively) is not well supported.
+ * No support for compressed textures.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from vispy.util.six import string_types
+from . import gl
+
+
+def ext_available(extension_name):
+ """ Get whether an extension is available.
+ For now, this always returns True...
+ """
+ return True # for now
+
+
+def convert_to_enum(param, allow_none=False):
+ """ Convert parameter (e.g. a string) to GL enum.
+ """
+ if isinstance(param, string_types):
+ param = param.upper()
+ if not param.startswith('GL'):
+ param = 'GL_' + param
+ try:
+ param = getattr(gl, param)
+ except AttributeError:
+ raise ValueError('Unknown GL enum: "%s".' % param)
+ elif isinstance(param, int):
+ pass # We assume this is a valid enum
+ elif param is None and allow_none:
+ pass
+ else:
+ raise ValueError('Invalid type for GL enum: %r.' % type(param))
+ return param
+
+
+from .globject import GLObject
+
+from .buffer import VertexBuffer, ElementBuffer
+#from .buffer import ClientVertexBuffer, ClientElementBuffer
+from .texture import Texture2D, Texture3D, TextureCubeMap
+from .shader import VertexShader, FragmentShader
+from .framebuffer import FrameBuffer, RenderBuffer
+from .program import Program
+
diff --git a/vispy/gloo/buffer.py b/vispy/gloo/buffer.py
new file mode 100644
index 0000000..e75b8a6
--- /dev/null
+++ b/vispy/gloo/buffer.py
@@ -0,0 +1,870 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team. All Rights Reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+# -----------------------------------------------------------------------------
+""" Definition of VertexBuffer, ElemenBuffer and client buffer classes. """
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+import numpy as np
+
+from vispy.util import is_string
+from . import gl
+from . import GLObject
+from . import ext_available
+
+
+
+# ------------------------------------------------------------ Buffer class ---
+class Buffer(GLObject):
+ """ Interface to upload buffer data to the GPU. This class is shape
+ and dtype agnostic and considers the arrays as byte data.
+
+ In general, you will want to use the VertexBuffer or ElementBuffer.
+
+ Parameters
+ ----------
+ target : GLENUM
+ gl.GL_ARRAY_BUFFER or gl.GL_ELEMENT_ARRAY_BUFFER
+ data : ndarray
+ The data to set. Optional.
+ """
+
+
+ def __init__(self, target, data=None):
+ """ Initialize buffer into default state. """
+
+ GLObject.__init__(self)
+
+ # Store and check target
+ if target not in (gl.GL_ARRAY_BUFFER, gl.GL_ELEMENT_ARRAY_BUFFER):
+ raise ValueError("Invalid target for buffer object.")
+ self._target = target
+
+ # Total bytes consumed by the elements of the buffer
+ self._nbytes = 0
+
+ # Indicate if a resize has been requested
+ self._need_resize = False
+
+ # Buffer usage (GL_STATIC_DRAW, G_STREAM_DRAW or GL_DYNAMIC_DRAW)
+ self._usage = gl.GL_DYNAMIC_DRAW
+
+ # Set data
+ self._pending_data = []
+ if data is not None:
+ self.set_data(data)
+
+
+ def set_nbytes(self, nbytes):
+ """ Set how many bytes should be available for the buffer.
+ """
+ nbytes = int(nbytes)
+
+ # Set new bytes
+ if self._nbytes != nbytes:
+ self._nbytes = int(nbytes)
+ self._need_resize = True
+
+ # Clear pending subdata
+ self._pending_data = []
+
+
+ def set_data(self, data):
+ """ Set the bytes data. This accepts a numpy array,
+ but the data is not checked for dtype or shape.
+
+ Parameters
+ ----------
+ data : ndarray
+ The data to set.
+ """
+
+ # Check data is a numpy array
+ if not isinstance(data, np.ndarray):
+ raise ValueError("Data should be a numpy array.")
+
+ # Set shape if necessary
+ self.set_nbytes(data.nbytes)
+
+ # Set pending!
+ nbytes = data.nbytes
+ self._pending_data.append( (data, nbytes, 0) )
+ self._need_update = True
+
+
+ def set_subdata(self, offset, data):
+ """ Update a region of the buffer.
+
+ Parameters
+ ----------
+ offset : int
+ The offset (in bytes) at which to set the given data.
+ data : ndarray
+ The data to set.
+
+ """
+
+ # Check some size has been allocated
+ if not self._nbytes:
+ raise RuntimeError("Cannot set subdata if there is no space allocated.")
+
+ # Check data is a numpy array
+ if not isinstance(data, np.ndarray):
+ raise ValueError("Data should be a numpy array.")
+
+ # Get offset and nbytes
+ offset = int(offset)
+ nbytes = data.nbytes
+
+ # Check
+ if offset < 0:
+ raise ValueError("Offset must be > 0.")
+ if (offset+nbytes) > self._nbytes:
+ raise ValueError("Offseted data is too big for buffer.")
+
+ # Set pending!
+ self._pending_data.append( (data, nbytes, offset) )
+ self._need_update = True
+
+
+ @property
+ def nbytes(self):
+ """ The buffer size (in bytes). """
+ return self._nbytes
+
+
+ def _create(self):
+ """ Create buffer on GPU """
+ if not self._handle:
+ self._handle = gl.glGenBuffers(1)
+
+
+ def _delete(self):
+ """ Delete buffer from GPU """
+ gl.glDeleteBuffers(1 , [self._handle])
+
+
+ def _activate(self):
+ """ Bind the buffer to some target """
+ gl.glBindBuffer(self._target, self._handle)
+
+
+ def _deactivate(self):
+ """ Unbind the current bound buffer """
+ gl.glBindBuffer(self._target, 0)
+
+
+ def _update(self):
+ """ Upload all pending data to GPU. """
+
+ # Bind buffer now
+ gl.glBindBuffer(self._target, self._handle)
+
+ # Allocate new size if necessary
+ if self._need_resize:
+ # This will only allocate the buffer on GPU
+ # WARNING: we should check if this operation is ok
+ gl.glBufferData(self._target, self._nbytes, None, self._usage)
+ # debug
+ #print("Creating a new buffer (%d) of %d bytes"
+ # % (self._handle, self._nbytes))
+ self._need_resize = False
+
+ # Upload data
+ while self._pending_data:
+ data, nbytes, offset = self._pending_data.pop(0)
+ # debug
+ # print("Uploading %d bytes at offset %d to buffer (%d)"
+ # % (nbytes, offset, self._handle))
+ try:
+ gl.glBufferSubData(self._target, offset, nbytes, data)
+ except Exception as error:
+ # This might be due to a driver error (seen on ATI), issue #64.
+ # We try to detect this, and if we can use glBufferData instead
+ if ( hasattr(error, 'err') and
+ error.err == gl.GL_INVALID_VALUE and
+ offset == 0 and nbytes == self._nbytes ):
+ gl.glBufferData(self._target, nbytes, data, self._usage)
+ else:
+ raise
+
+
+
+
+# ------------------------------------------------------ DataBuffer class ---
+class DataBuffer(Buffer):
+ """ Interface to upload buffer data to the GPU. This class is based
+ on :class:`buffer.Buffer`, and adds awareness of shape, dtype and striding.
+
+ In general, you will want to use the VertexBuffer or ElementBuffer.
+
+ Parameters
+ ----------
+ target : GLENUM
+ gl.GL_ARRAY_BUFFER or gl.GL_ELEMENT_ARRAY_BUFFER
+ data : ndarray or dtype
+ The data to set. See docs of VertexBuffer and ElementBuffer for
+ details.
+
+ """
+
+
+ def __init__(self, target, data):
+ """ Initialize the buffer """
+ Buffer.__init__(self, target)
+
+ # Default offset is 0, only really used for View
+ self._offset = 0
+
+ # Allow smart initialziatin
+ if is_string(data):
+ data = np.dtype(data) # with a string, e.g. "float32"
+ elif isinstance(data, tuple):
+ data = np.dtype([data]) # With a tuple, e.g. ('a', np.float32, 3)
+ elif isinstance(data, list):
+ data = np.dtype(data) # With a list of the above tuples
+ elif isinstance(data, type) and issubclass(data, np.generic):
+ data = np.dtype(data) # With e.g. np.float32
+
+ # Initialize
+ if isinstance(data, np.ndarray):
+ # Fix dtype, vsize, stride. Initialize count
+ array_info = self._parse_array(data)
+ self._dtype, self._vsize, self._stride, self._count = array_info
+ # Set data now
+ if not isinstance(self, (ClientVertexBuffer, ClientElementBuffer)):
+ self.set_data(data)
+ elif isinstance(data, np.dtype):
+ # Fix dtype, vsize, stride. Initialize count
+ self._dtype, self._vsize, self._stride = self._parse_dtype(data)
+ self._count = 0
+ else:
+ raise ValueError("DataBuffer needs array or dtype to initialize.")
+
+ # Check data type
+ if self.dtype.fields:
+ for name in self.dtype.names:
+ dtype = self.dtype[name].base
+ if dtype.name not in self.DTYPE2GTYPE:
+ raise TypeError("Data type not allowed for %s: %s" %
+ (self.__class__.__name__, dtype.name) )
+ else:
+ if self.dtype.name not in self.DTYPE2GTYPE:
+ raise TypeError("Data type not allowed for %s: %s" %
+ (self.__class__.__name__, self.dtype.name) )
+
+
+
+ def _parse_array(self, data):
+ """ Return (dtype, vsize, stride, count), given an array.
+ NEED OVERLOADING
+ """
+ raise NotImplementedError()
+
+
+ def _parse_dtype(self, dtype):
+ """ Return (dtype, vsize, stride), given a dtype.
+ NEED OVERLOADING
+ """
+ raise NotImplementedError()
+
+
+ @property
+ def dtype(self):
+ """ The buffer data type. """
+ return self._dtype
+
+
+ @property
+ def vsize(self):
+ """ The vector size of each vertex in the buffer. This can be
+ 1, 2, 3 or 4, corresponding with float, vec2, vec3, vec4. """
+ return self._vsize
+
+
+ @property
+ def stride(self):
+ """ The number of bytes separating two elements. """
+ return self._stride
+
+
+ @property
+ def count(self):
+ """ The number of vertices in the buffer. """
+ return self._count
+
+
+ @property
+ def offset(self):
+ """ The byte offset in the buffer. """
+ return self._offset
+
+
+
+ def __setitem__(self, key, data):
+ """ Set data (deferred operation) """
+
+ # Deal with slices that have None or negatives in them
+ if isinstance(key, slice):
+ start = key.start or 0
+ if start < 0:
+ start = self._stride + start
+ step = key.step or 1
+ assert step > 0
+ stop = key.stop or self._stride
+ if stop < 0:
+ stop = self._stride + stop
+
+ # Check ellipsis (... notation)
+ if key == Ellipsis:
+ start = 0
+ nbytes = data.nbytes
+ # If key is not a slice
+ elif not isinstance(key, slice) or step > 1:
+ raise ValueError("Can only set contiguous block of data.")
+ # Else we're happy
+ else:
+ nbytes = (stop - start) * self._stride
+
+ # Check we have the right amount of data
+ if data.nbytes < nbytes:
+ raise ValueError("Not enough data.")
+ elif data.nbytes > nbytes:
+ raise ValueError("Too much data.")
+
+ # WARNING: Do we check data type here or do we cast the data to the
+ # same internal dtype ? This would make a silent copy of the data which
+ # can be problematic in some cases.
+ if data.dtype != self.dtype:
+ data = data.astype(self.dtype) # astype() always makes a copy
+ # Set
+ self.set_subdata(start, data)
+
+
+ def __getitem__(self, key):
+ """ Create a view on this buffer. """
+
+ if not is_string(key):
+ raise ValueError("Can only get access to a named field")
+
+ # Get dtype, e.g. ('x', '<f4', 2) so it has the vsize!
+ dtype = self._dtype[key] # not .base!
+ offset = self._dtype.fields[key][1]
+
+ return VertexBufferView(dtype, base=self, offset=offset)
+
+
+ def set_count(self, count):
+ """ Set the number of vertices for this buffer. This will
+ allocate data and discard any pending subdata.
+
+ Parameters
+ ----------
+ count : int
+ The new size of the buffer; the number of vertices.
+
+ """
+
+ # Set count
+ self._count = int(count)
+
+ # Update bytes
+ nbytes = self._count * self._stride
+ self.set_nbytes(nbytes)
+
+
+ def set_data(self, data):
+ """ Set the data for this buffer. Any pending data is discarted.
+ The dtype and vsize of this buffer should be respected.
+
+ Parameters
+ ----------
+ data :: np.ndarray
+ The data to upload.
+
+ """
+
+ # Check data is a numpy array
+ if not isinstance(data, np.ndarray):
+ raise ValueError("Data should be a numpy array.")
+
+ # If data is a structure array with a unique field
+ # we get this unique field as data
+ while data.dtype.fields and len(data.dtype.fields) == 1:
+ data = data[data.dtype.names[0]]
+
+ # Get props of the given data
+ dtype, vsize, stride, count = self._parse_array(data)
+
+ # Check dtype and vsize to see whether it is a match
+ if dtype != self.dtype:
+ raise ValueError('Given data must match dtype of the buffer.')
+ elif vsize != self.vsize:
+ raise ValueError('Given data must match vsize of the buffer.')
+
+ # Update count
+ self.set_count(count)
+
+ # Update stride for this newly given data
+ self._stride = stride
+
+ # Update data
+ Buffer.set_data(self, data)
+
+
+ def set_subdata(self, offset, data):
+ """ Set subdata. The dtype and vsize of this buffer should be
+ respected. And the data must fit in the current buffer.
+
+ Parameters
+ ----------
+ offset : int
+ The offset (in vertex indices) to set the data for.
+ data : np.ndarray
+ The data to update.
+ """
+
+ # If data is a structure array with a unique field
+ # we get this unique field as data
+ while data.dtype.fields and len(data.dtype.fields) == 1:
+ data = data[data.dtype.names[0]]
+
+ # Get props of the given data and check whether it's a match
+ dtype, vsize, stride, count = self._parse_array(data)
+ if dtype != self.dtype:
+ raise ValueError('Given data must match dtype of the buffer.')
+ elif vsize != self.vsize:
+ raise ValueError('Given data must match vsize of the buffer.')
+ elif stride != self.stride:
+ raise ValueError('Given data must match stride of the buffer.')
+
+ # Test whether it fits
+ if offset < 0:
+ raise ValueError('Offset in set_subdata should be >= 0.')
+ elif offset + count > self.count:
+ raise ValueError('Offset + data does not fit in this buffer.')
+
+ # Turn attribute-offset into a byte offset
+ offset = int(offset)
+ byte_offset = offset * self._stride
+
+ # Upload
+ Buffer.set_subdata(self, byte_offset, data)
+
+
+
+# ------------------------------------------------------ ElementBuffer class ---
+class ElementBuffer(DataBuffer):
+ """ The ElementBuffer allows to specify which element of a
+ VertexBuffer are to be used in a shader program.
+ Inherits :class:`buffer.DataBuffer`.
+
+ The given data must be of unsigned integer type. The shape of the
+ data is ignored; each element in the array is simply considered a
+ vertex index.
+
+ Parameters
+ ----------
+ data : ndarray or dtype
+ Specify the data, or the type of the data. The dtype can also
+ be something that evaluates to a dtype, such as a 'uint32' or
+ np.uint8.
+ client : bool
+ Should be given as a keyword argument. If True, a
+ ClientElementBuffer is used instead, which is a lightweight
+ wrapper class for storing element data in CPU memory.
+
+ Example
+ -------
+ indices = np.zeros(100, dtype=np.uint16)
+ buffer = ElementBuffer(indices)
+ program = Program(...)
+
+ program.draw(gl.GL_TRIANGLES, indices)
+ ...
+ """
+
+ # We need a DTYPE->GL map for the element buffer. Used in program.draw()
+ DTYPE2GTYPE = { 'uint8': gl.GL_UNSIGNED_BYTE,
+ 'uint16': gl.GL_UNSIGNED_SHORT,
+ 'uint32': gl.GL_UNSIGNED_INT,
+ }
+
+
+ def __new__(cls, *args, **kwargs):
+ if cls is ElementBuffer and kwargs.get('client', False):
+ return object.__new__(ClientElementBuffer) # __init__ will be called
+ else:
+ return object.__new__(cls) # __init__ will be called
+
+
+ def __init__(self, data, client=False):
+ DataBuffer.__init__(self, gl.GL_ELEMENT_ARRAY_BUFFER, data)
+
+
+ def _parse_array(self, data):
+ """ Return (dtype, vsize, stride, count), given an array.
+ """
+
+ # Check data
+ if data.dtype.fields:
+ raise ValueError('ElementBuffer does not support structured arrays.')
+
+ # Set dtype, vsize and stride
+ dtype, vsize, stride = self._parse_dtype(data.dtype)
+
+ # Count is simply the size
+ count = data.size
+
+ return dtype, vsize, stride, count
+
+
+ def _parse_dtype(self, dtype):
+ """ Return (dtype, vsize, stride), given a dtype.
+ """
+
+ # Check data
+ if dtype.fields:
+ raise ValueError('ElementBuffer does not support structured dtype.')
+
+ # Get base dtype, this will turn ('x', '<f4', 3) into np.float32
+ dtype_ = dtype.base
+
+ # vsize is one, the ElementBuffer contains indices, which are scalars
+ vsize = 1
+
+ # Get stride
+ stride = dtype.itemsize * vsize # == dtype.itemsize
+
+ return dtype_, vsize, stride
+
+
+
+# ------------------------------------------------------ VertexBuffer class ---
+class VertexBuffer(DataBuffer):
+ """ The VertexBuffer represents any kind of vertex data, and can also
+ represent an array-of-structures approach.
+ Inherits :class:`buffer.DataBuffer`.
+
+ The shape of the given data is interpreted in the following way:
+ If a normal array of one dimension is given, the vector-size (vsize)
+ is considered 1. Otherwise, data.shape[-1] is considered the vsize,
+ and the other dimensions are "collapsed" to get the vertex count.
+ If the data is a structured array, the number of elements in each
+ item is used as the vector-size (vsize).
+
+ Parameters
+ ----------
+ data : ndarray or dtype
+ Specify the data, or the type of the data. The dtype can also
+ be something that evaluates to a dtype, such as a 'uint32' or
+ np.uint8. If a structured array or dtype is given, and there
+ are more than 1 elements in the structure, this buffer is a
+ "structured" buffer. The corresponding items can be obtained
+ by indexing this buffer using their name. In most cases
+ one can use program.set_vars(structured_buffer) to map the
+ item names to their GLSL attribute names automatically.
+ client : bool
+ Should be given as a keyword argument. If True, a
+ ClientVertexBuffer is used instead, which is a lightweight
+ wrapper class for storing vertex data in CPU memory.
+
+ Example
+ -------
+ dtype = np.dtype( [ ('position', np.float32, 3),
+ ('texcoord', np.float32, 2),
+ ('color', np.float32, 4) ] )
+ data = np.zeros(100, dtype=dtype)
+
+ program = Program(...)
+
+ program.set_vars(VertexBuffer(data))
+ """
+
+ # Note that we do not actually use this, except the keys to test
+ # whether a data type is allowed; we parse the gtype from the
+ # attribute data.
+ DTYPE2GTYPE = { 'int8': gl.GL_BYTE,
+ 'uint8': gl.GL_UNSIGNED_BYTE,
+ 'uint16': gl.GL_UNSIGNED_SHORT,
+ 'int16': gl.GL_SHORT,
+ 'float32': gl.GL_FLOAT,
+ 'float16': gl.ext.GL_HALF_FLOAT,
+ }
+
+
+ def __new__(cls, *args, **kwargs):
+ if cls is VertexBuffer and kwargs.get('client', False):
+ return object.__new__(ClientVertexBuffer) # __init__ will be called
+ else:
+ return object.__new__(cls) # __init__ will be called
+
+
+ def __init__(self, data, client=False):
+ DataBuffer.__init__(self, gl.GL_ARRAY_BUFFER, data)
+
+
+ def _parse_array(self, data):
+ """ Return (dtype, vsize, stride, count), given an array.
+ """
+
+ # If data is a structure array with a unique field
+ # we get this unique field as data
+ while data.dtype.fields and len(data.dtype.fields) == 1:
+ data = data[data.dtype.names[0]]
+
+ # Set dtype, vsize and stride
+ dtype, vsize, stride = self._parse_dtype(data.dtype)
+
+ # Determine count and vsize
+ if dtype.fields:
+ # Structured array, vsize is already set
+ # Count is simply the number of elements in the base array
+ count = data.size
+
+ else:
+ # Normal array, we reset vsize using the data
+
+ if data.ndim <= 1:
+ # We take it the vector size is 1
+ vsize = 1
+ # Count is simply the number of elements.
+ count = data.size
+ else:
+ # Vector size is last dimension
+ vsize = data.shape[-1]
+ # Count is product of all dimensions except last
+ count = int(np.prod(data.shape[:-1]))
+
+ # Set stride
+ if data.base is None:
+ # There is no base. PyOpenGL will upload our data as-is,
+ # so we use strides of the numpy array. This occurs in most
+ # situations, but also if we do VertexBuffer(data) where
+ # data is a structured array.
+ stride = data.strides[0]
+ else:
+ # There is a base, PyOpenGL will make a local copy before
+ # uploading the data. Therefore data.strides[0] will be
+ # incorrect; we need to calcualate the stride that the local
+ # copy will have. This can differ fron data.strides[0] when
+ # we do e.g. VertexBuffer( data['a_position'] ).
+ stride = dtype.itemsize * vsize
+
+ # Done
+ return dtype, vsize, stride, count
+
+
+ def _parse_dtype(self, dtype):
+ """ Return (dtype, vsize, stride), given a dtype.
+ """
+
+ # If dtype is a structure with a unique field
+ # we get this unique field as dtype
+ while dtype.fields and len(dtype.fields) == 1:
+ dtype = dtype[dtype.names[0]]
+
+ # Get base dtype, this will turn ('x', '<f4', 3) into np.float32
+ dtype_ = dtype.base
+
+ # Determine count and vsize
+ if dtype.fields:
+ # Structured array: Vector size is 1: one element of this
+ # structured dtype per vertex
+ vsize = 1
+ # Or ... We set the sun of all vsizes
+ # No! because "stride = data.itemsize * vsize" will then fail!
+ #shapes = [dtype[name].shape for name in dtype.names]
+ #sizes = [int(np.prod(s)) for s in shapes]
+ #vsize = sum(sizes)
+
+ elif dtype.shape:
+ # e.g. ('x', '<f4', 3):
+ # Vector size is simply the number of elements in the dtype
+ vsize = int(np.prod(dtype.shape))
+
+ else:
+ # Plain dtype, assume scalar value
+ vsize = 1
+
+ # Get stride. Note that this will always be overriden by _parse_array
+ stride = dtype.itemsize * vsize
+
+ return dtype_, vsize, stride
+
+
+
+# ------------------------------------------------------ VertexBuffer class ---
+class VertexBufferView(VertexBuffer):
+ """ A VertexBufferView is a view on a VertexBuffer. It cannot be
+ used to set shape or data. You generally do not use this class
+ directly, but create an instance of this class by indexing in a
+ structured VertexBuffer.
+ """
+
+ def __init__(self, dtype, base, offset):
+ """ Initialize the view """
+ assert isinstance(dtype, np.dtype)
+ VertexBuffer.__init__(self, dtype)
+
+ self._base = base
+ self._offset = int(offset)
+ self._stride = base.stride # Override this
+
+
+ def set_count(self, *args, **kwargs):
+ raise RuntimeError('Cannot set count on a %s.' % self.__class__.__name__)
+
+ def set_data(self, *args, **kwargs):
+ raise RuntimeError('Cannot set data on a %s.' % self.__class__.__name__)
+
+ def set_subdata(self, *args, **kwargs):
+ raise RuntimeError('Cannot set subdata on a %s.' % self.__class__.__name__)
+
+
+ @property
+ def handle(self):
+ # Handle on base buffer. (avoid showing up in docs)
+ self._handle = self._base._handle
+ return self._handle
+
+
+ @property
+ def stride(self):
+ """ Byte number separating two elements. """
+ self._stride = self._base.stride
+ return self._stride
+
+
+ @property
+ def count(self):
+ """ Number of vertices in the buffer. """
+ self._count = self._base.count
+ return self._count
+
+
+ @property
+ def base(self):
+ """ Vertex buffer base of this view. """
+ return self._base
+
+
+ def _create(self):
+ """ Create buffer on GPU """
+ self._base._create()
+ self._handle = self._base._handle
+
+
+ def _delete(self):
+ """ Delete base buffer from GPU. """
+ self._base.delete()
+
+
+ def _activate(self):
+ """ Bind the base buffer to some target """
+ self._base.activate()
+
+
+ def _deactivate(self):
+ """ Unbind the base buffer """
+ self._base.deactivate()
+
+
+ def _update(self):
+ """ Update base buffer. """
+ pass # base._update is called from base.activate
+
+
+
+
+# ------------------------------------------------ ClientVertexBuffer class ---
+class ClientVertexBuffer(VertexBuffer):
+ """
+ A client buffer is a buffer that only exists (permanently) on the CPU. It
+ cannot be modified nor uploaded into a GPU buffer. It merely serves as
+ passing direct data during a drawing operations.
+
+ Note this kind of buffer is in general inefficient since data is
+ uploaded at each draw.
+ """
+
+ def __init__(self, data, client=True):
+ """ Initialize the buffer. """
+ if not isinstance(data, np.ndarray):
+ raise ValueError('ClientVertexBuffer needs a numpy array.')
+ VertexBuffer.__init__(self, data)
+ self._data = data
+
+
+ @property
+ def data(self):
+ """ Buffer data. """
+ return self._data
+
+
+ def set_count(self, *args, **kwargs):
+ raise RuntimeError('Cannot set count on a %s.' % self.__class__.__name__)
+
+ def set_data(self, *args, **kwargs):
+ raise RuntimeError('Cannot set data on a %s.' % self.__class__.__name__)
+
+ def set_subdata(self, *args, **kwargs):
+ raise RuntimeError('Cannot set subdata on a %s.' % self.__class__.__name__)
+
+
+ def __getitem__(self, key): pass
+ def __setitem__(self, key, data): pass
+ def _create(self): pass
+ def _delete(self): pass
+ def _activate(self): pass
+ def _deactivate(self): pass
+ def _update(self): pass
+
+
+
+# ----------------------------------------------- ClientElementBuffer class ---
+class ClientElementBuffer(ElementBuffer):
+ """
+ A client buffer is a buffer that only exists (permanently) on the CPU. It
+ cannot be modified nor uploaded into a GPU buffer. It merely serves as
+ passing direct data during a drawing operations.
+
+ Note this kind of buffer is in general inefficient since data is
+ uploaded at each draw.
+ """
+
+ def __init__(self, data, client=True):
+ """ Initialize the buffer. """
+ if not isinstance(data, np.ndarray):
+ raise ValueError('ClientElementBuffer needs a numpy array.')
+ ElementBuffer.__init__(self, data)
+ self._data = data
+
+
+ @property
+ def data(self):
+ """ Buffer data. """
+ return self._data
+
+
+ def set_count(self, *args, **kwargs):
+ raise RuntimeError('Cannot set count on a %s.' % self.__class__.__name__)
+
+ def set_data(self, *args, **kwargs):
+ raise RuntimeError('Cannot set data on a %s.' % self.__class__.__name__)
+
+ def set_subdata(self, *args, **kwargs):
+ raise RuntimeError('Cannot set subdata on a %s.' % self.__class__.__name__)
+
+
+ def __getitem__(self, key): pass
+ def __setitem__(self, key, data): pass
+ def _create(self): pass
+ def _delete(self): pass
+ def _activate(self): pass
+ def _deactivate(self): pass
+ def _update(self): pass
+
+
diff --git a/vispy/gloo/framebuffer.py b/vispy/gloo/framebuffer.py
new file mode 100644
index 0000000..c232b94
--- /dev/null
+++ b/vispy/gloo/framebuffer.py
@@ -0,0 +1,351 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Definition of Frame Buffer Object class and RenderBuffer class.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+import numpy as np
+
+from . import gl
+from . import GLObject, ext_available, convert_to_enum
+from . import Texture2D
+
+# todo: check and test all _delete methods
+
+# todo: we need a way to keep track of who uses a RenderBuffer,
+# so that it can be deleted when the last object stops using it.
+# Same for Shader class.
+# todo: support for 3D texture (need extension)
+# todo: support Cubemap
+
+
+class FrameBufferError(RuntimeError):
+ """ Raised when something goes wrong that depens on state that was set
+ earlier (due to deferred loading).
+ """
+ pass
+
+
+
+class RenderBuffer(GLObject):
+ """ Representation of a render buffer, to be attached to a
+ FrameBuffer object.
+ """
+
+ _COLOR_FORMATS = (gl.GL_RGB565, gl.GL_RGBA4, gl.GL_RGB5_A1,
+ gl.ext.GL_RGB8, gl.ext.GL_RGBA8)
+ _DEPTH_FORMATS = (gl.GL_DEPTH_COMPONENT16,
+ gl.ext.GL_DEPTH_COMPONENT24, gl.ext.GL_DEPTH_COMPONENT32)
+ _STENCIL_FORMATS = (gl.GL_STENCIL_INDEX8,
+ gl.ext.GL_STENCIL_INDEX1, gl.ext.GL_STENCIL_INDEX4)
+
+ _FORMATS = (_COLOR_FORMATS + _DEPTH_FORMATS + _STENCIL_FORMATS +
+ (gl.ext.GL_DEPTH24_STENCIL8,) )
+
+
+ def __init__(self, shape=None, format=None):
+ GLObject.__init__(self)
+
+ # Parameters
+ self._shape = None
+ self._format = None
+
+ # Set storage now?
+ if shape is not None:
+ self.set_shape(shape, format=format)
+
+
+ def set_shape(self, shape, format=None):
+ """ Allocate storage for this render buffer.
+
+ This function can be repeatedly called without much cost if
+ the shape is not changed.
+
+ In general, it's easier to just call FrameBuffer.set_size()
+ to allocate space for all attachements.
+
+ Parameters
+ ----------
+ shape : tuple
+ The shape of the "virtual" data. Note that shape[0] is height.
+ format : str
+ The format representation of the data. If not given or None,
+ it is determined automatically depending on the shape and
+ the kind of atatchment. Can be RGB565, RGBA4, RGB5_A1, RGB8,
+ RGBA8, DEPTH_COMPONENT16, DEPTH_COMPONENT24, DEPTH_COMPONENT32,
+ STENCIL_INDEX8, STENCIL_INDEX1, STENCIL_INDEX4. The OpenGL enum
+ can also be given.
+
+ """
+ # Set ndim
+ ndim = 2
+
+ # Convert format
+ format = convert_to_enum(format, True)
+
+ # Check shape
+ if not isinstance(shape, tuple):
+ raise ValueError("Shape must be a tuple.")
+ if not ( (len(shape) == ndim) or
+ len(shape) == ndim+1 and shape[-1] <= 4 ):
+ raise ValueError("Shape has invalid dimensions.")
+ shape = tuple([int(i) for i in shape])
+ if not all([i>0 for i in shape]):
+ raise ValueError("Cannot have negative shape.")
+
+ # Is this already my shape?
+ if format is None or format is self._format:
+ if self._shape is not None:
+ if self._shape[:ndim] == shape[:ndim]:
+ return
+
+ # Check format
+ if format is None:
+ # Set later by FBO.
+ # Note here, because default differs per color/depth/stencil
+ pass
+ elif format not in self._FORMATS:
+ raise ValueError('Given format not supported for RenderBuffer storage.')
+
+ # Set pending data
+ self._shape = shape
+ self._format = format or self._format
+ self._need_update = True
+
+
+ def _create(self):
+ self._handle = gl.glGenRenderbuffers(1)
+
+
+ def _delete(self):
+ gl.glDeleteRenderbuffers([self._handle])
+
+
+ def _activate(self):
+ gl.glBindRenderbuffer(gl.GL_RENDERBUFFER, self._handle)
+
+
+ def _deactivate(self):
+ gl.glBindRenderbuffer(gl.GL_RENDERBUFFER, 0)
+
+
+ def _update(self):
+
+ # Enable now
+ gl.glBindRenderbuffer(gl.GL_RENDERBUFFER, self._handle)
+
+ # Get data
+ shape, format = self._shape, self._format
+ if shape is None or format is None:
+ return
+ # Check size
+ MAX = gl.glGetIntegerv(gl.GL_MAX_RENDERBUFFER_SIZE)
+ if shape[0] > MAX or shape[1] > MAX:
+ raise FrameBufferError('Cannot create a render buffer of %ix%i (max is %i).' % (shape[1], shape[0], MAX))
+ # Set
+ gl.glRenderbufferStorage(gl.GL_RENDERBUFFER, format, shape[1], shape[0])
+
+
+
+
+class FrameBuffer(GLObject):
+ """ Representation of a frame buffer object (a.k.a. FBO).
+ FrameBuffers allow off-screen rendering instead of to the screen.
+ This is for instance used for special effects and post-processing.
+ """
+
+ def __init__(self, color=None, depth=None, stencil=None):
+ GLObject.__init__(self)
+
+ # Init pending attachments
+ self._pending_attachments = []
+ self._attachment_color = None
+ self._attachment_depth = None
+ self._attachment_stencil = None
+
+ # Set given attachments
+ if color is not None:
+ self.attach_color(color)
+ elif depth is not None:
+ self.attach_depth(depth)
+ elif stencil is not None:
+ self.attach_stencil(stencil)
+
+
+ @property
+ def color_attachment(self):
+ """ Get the color attachement.
+ """
+ return self._attachment_color
+
+
+ @property
+ def depth_attachment(self):
+ """ Get the depth attachement.
+ """
+ return self._attachment_depth
+
+
+ @property
+ def stencil_attachment(self):
+ """ Get the stencil attachement.
+ """
+ return self._attachment_stencil
+
+
+ def attach_color(self, object, level=0):
+ """ Attach a RenderBuffer of Texture instance to collect
+ color output for this FrameBuffer. Pass None for object
+ to detach the attachment. If a texture is given,
+ level specifies the mipmap level (default 0).
+ """
+ attachment = gl.GL_COLOR_ATTACHMENT0
+ if not isinstance(level, int):
+ raise ValueError("Level must be an int")
+
+ if object is None or object == 0:
+ # Detach
+ self._attachment_color = None
+ self._pending_attachments.append( (attachment, 0, None) )
+ elif isinstance(object, RenderBuffer):
+ # Render buffer
+ self._attachment_color = object
+ object._format = object._format or gl.GL_RGB565 # GL_RGB565 or GL_RGBA4
+ self._pending_attachments.append( (attachment, object, None) )
+ elif isinstance(object, Texture2D):
+ # Texture
+ self._attachment_color = object
+ self._pending_attachments.append( (attachment, object, level) )
+ else:
+ raise ValueError('Can only attach a RenderBuffer of Texture to a FrameBuffer.')
+ self._need_update = True
+
+
+ def attach_depth(self, object, level=0):
+ """ Attach a RenderBuffer of Texture instance to collect
+ depth output for this FrameBuffer. Pass None for object
+ to detach the attachment. If a texture is given,
+ level specifies the mipmap level (default 0).
+ """
+ attachment = gl.GL_DEPTH_ATTACHMENT
+ if not isinstance(level, int):
+ raise ValueError("Level must be an int")
+
+ if object is None or object == 0:
+ # Detach
+ self._attachment_depth = None
+ self._pending_attachments.append( (attachment, 0, None) )
+ elif isinstance(object, RenderBuffer):
+ # Render buffer
+ object._format = object._format or gl.GL_DEPTH_COMPONENT16
+ self._attachment_depth = object
+ self._pending_attachments.append( (attachment, object, None) )
+ elif isinstance(object, Texture2D):
+ # Texture
+ self._attachment_depth = object
+ self._attachment_depth = object
+ self._pending_attachments.append( (attachment, object, level) )
+ else:
+ raise ValueError('Can only attach a RenderBuffer or Texture to a FrameBuffer.')
+ self._need_update = True
+
+
+ def attach_stencil(self, object):
+ """ Attach a RenderBuffer instance to collect stencil output for
+ this FrameBuffer. Pass None for object to detach the
+ attachment.
+ """
+ attachment = gl.GL_STENCIL_ATTACHMENT
+ if object is None or object == 0:
+ # Detach
+ self._attachment_stencil = None
+ self._pending_attachments.append( (attachment, 0, None) )
+ elif isinstance(object, RenderBuffer):
+ object._format = object._format or gl.GL_STENCIL_INDEX8
+ # Detach
+ self._attachment_stencil = object
+ self._pending_attachments.append( (attachment, object, None) )
+ else:
+ raise ValueError('For stencil data, can only attach a RenderBuffer to a FrameBuffer.')
+ self._need_update = True
+
+
+ def set_size(self, width, height):
+ """ Convenience function to set the space allocated for all
+ attachments in use.
+ """
+ shape = height, width, 3
+ for attachment in ( self._attachment_color,
+ self._attachment_depth,
+ self._attachment_stencil):
+ if isinstance(attachment, Texture2D):
+ attachment.set_shape(shape)
+ elif isinstance(attachment, RenderBuffer):
+ attachment.set_shape(shape)
+
+
+ def _create(self):
+ self._handle = gl.glGenFramebuffers(1)
+
+
+ def _delete(self):
+ gl.glDeleteFramebuffers([self._handle])
+
+
+ def _activate(self):
+ gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self._handle)
+
+
+ def _deactivate(self):
+ gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, 0)
+
+
+ def _update(self):
+
+ # We need to activate before we can add attachements
+ gl.glBindFramebuffer(gl.GL_FRAMEBUFFER, self._handle)
+
+ # Attach any RenderBuffers or Textures
+ # Note that we only enable the object briefly to attach it.
+ # After that, the object does not need to be bound.
+ while self._pending_attachments:
+ attachment, object, level = self._pending_attachments.pop(0)
+ if object == 0:
+ gl.glFramebufferRenderbuffer(gl.GL_FRAMEBUFFER, attachment,
+ gl.GL_RENDERBUFFER, 0)
+ elif isinstance(object, RenderBuffer):
+ with object:
+ gl.glFramebufferRenderbuffer(gl.GL_FRAMEBUFFER, attachment,
+ gl.GL_RENDERBUFFER, object.handle)
+ elif isinstance(object, Texture2D):
+ # note that we use private variable _target from Texture
+ with object:
+ gl.glFramebufferTexture2D(gl.GL_FRAMEBUFFER, attachment,
+ object._target, object.handle, level)
+ else:
+ raise FrameBufferError('Invalid attachment. This should not happen.')
+
+ # Check
+ if True:
+ res = gl.glCheckFramebufferStatus(gl.GL_FRAMEBUFFER)
+ if res == gl.GL_FRAMEBUFFER_COMPLETE:
+ pass
+ elif res == 0:
+ raise FrameBufferError('Target not equal to GL_FRAMEBUFFER')
+ elif res == gl.GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
+ raise FrameBufferError('FrameBuffer attachments are incomplete.')
+ elif res == gl.GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
+ raise FrameBufferError('No valid attachments in the FrameBuffer.')
+ elif res == gl.GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS:
+ raise FrameBufferError('attachments do not have the same width and height.')
+ #elif res == gl.GL_FRAMEBUFFER_INCOMPLETE_FORMATS: # Not in our namespace?
+ # raise FrameBufferError('Internal format of attachment is not renderable.')
+ elif res == gl.GL_FRAMEBUFFER_UNSUPPORTED:
+ raise FrameBufferError('Combination of internal formats used by attachments is not supported.')
+
+
diff --git a/vispy/gloo/gl/__init__.py b/vispy/gloo/gl/__init__.py
new file mode 100644
index 0000000..6572ef2
--- /dev/null
+++ b/vispy/gloo/gl/__init__.py
@@ -0,0 +1,76 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+The raw API to OpenGL ES 2.0. There are multiple implementations of this API,
+available as submodules of this module. This module is a copy of one of these
+submodule implementations.
+"""
+
+# NOTE: modules in this package that start with one underscore are autogenerated
+
+from __future__ import print_function, division, absolute_import
+
+import vispy
+
+
+class _GL_ENUM(int):
+ """ Type to represent OpenGL constants.
+ """
+ def __new__(cls, name, value):
+ base = int.__new__(cls, value)
+ base.name = name
+ return base
+ def __repr__( self ):
+ return self.name
+
+
+def _make_debug_wrapper(funcname, func):
+ def cb(*args, **kwds):
+ argstr = ', '.join(list(map(repr,args)) + ['%s=%s' % item for item in kwds.items()])
+ print("%s(%s)" % (funcname, argstr))
+ ret = func(*args, **kwds)
+ print( " <= %s" % repr(ret))
+ return ret
+ return cb
+
+
+
+def use(target='desktop'):
+ """ Let Vispy use the target OpenGL ES 2.0 implementation.
+ Currently, only "desktop" is supported.
+ """
+ debug = vispy.config['gl_debug']
+
+ # Select modules to import names from
+ if target == 'desktop':
+ from . import desktop as mod
+ else:
+ raise ValueError('Invalid target to load OpenGL API from.')
+
+ # Import functions here
+ NS = globals()
+ funcnames = [name for name in dir(mod) if name.startswith('gl')]
+ for name in funcnames:
+ func = getattr(mod, name)
+ if debug:
+ func = _make_debug_wrapper(name, func)
+ NS[name] = func
+
+ # Import functions in ext
+ NS = ext.__dict__
+ funcnames = [name for name in dir(mod.ext) if name.startswith('gl')]
+ for name in funcnames:
+ func = getattr(mod.ext, name)
+ if debug:
+ func = _make_debug_wrapper(name, func)
+ NS[name] = func
+
+
+# Import ext namespace and constants
+from . import ext
+from ._constants import *
+
+# Fill this namespace with functions
+use()
diff --git a/vispy/gloo/gl/_constants.py b/vispy/gloo/gl/_constants.py
new file mode 100644
index 0000000..6fc4522
--- /dev/null
+++ b/vispy/gloo/gl/_constants.py
@@ -0,0 +1,315 @@
+"""
+
+THIS CODE IS AUTO-GENERATED. DO NOT EDIT.
+
+Constants for OpenGL ES 2.0.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from . import _GL_ENUM
+
+
+GL_ACTIVE_ATTRIBUTES = _GL_ENUM('GL_ACTIVE_ATTRIBUTES', 35721)
+GL_ACTIVE_ATTRIBUTE_MAX_LENGTH = _GL_ENUM('GL_ACTIVE_ATTRIBUTE_MAX_LENGTH', 35722)
+GL_ACTIVE_TEXTURE = _GL_ENUM('GL_ACTIVE_TEXTURE', 34016)
+GL_ACTIVE_UNIFORMS = _GL_ENUM('GL_ACTIVE_UNIFORMS', 35718)
+GL_ACTIVE_UNIFORM_MAX_LENGTH = _GL_ENUM('GL_ACTIVE_UNIFORM_MAX_LENGTH', 35719)
+GL_ALIASED_LINE_WIDTH_RANGE = _GL_ENUM('GL_ALIASED_LINE_WIDTH_RANGE', 33902)
+GL_ALIASED_POINT_SIZE_RANGE = _GL_ENUM('GL_ALIASED_POINT_SIZE_RANGE', 33901)
+GL_ALPHA = _GL_ENUM('GL_ALPHA', 6406)
+GL_ALPHA_BITS = _GL_ENUM('GL_ALPHA_BITS', 3413)
+GL_ALWAYS = _GL_ENUM('GL_ALWAYS', 519)
+GL_ARRAY_BUFFER = _GL_ENUM('GL_ARRAY_BUFFER', 34962)
+GL_ARRAY_BUFFER_BINDING = _GL_ENUM('GL_ARRAY_BUFFER_BINDING', 34964)
+GL_ATTACHED_SHADERS = _GL_ENUM('GL_ATTACHED_SHADERS', 35717)
+GL_BACK = _GL_ENUM('GL_BACK', 1029)
+GL_BLEND = _GL_ENUM('GL_BLEND', 3042)
+GL_BLEND_COLOR = _GL_ENUM('GL_BLEND_COLOR', 32773)
+GL_BLEND_DST_ALPHA = _GL_ENUM('GL_BLEND_DST_ALPHA', 32970)
+GL_BLEND_DST_RGB = _GL_ENUM('GL_BLEND_DST_RGB', 32968)
+GL_BLEND_EQUATION = _GL_ENUM('GL_BLEND_EQUATION', 32777)
+GL_BLEND_EQUATION_ALPHA = _GL_ENUM('GL_BLEND_EQUATION_ALPHA', 34877)
+GL_BLEND_EQUATION_RGB = _GL_ENUM('GL_BLEND_EQUATION_RGB', 32777)
+GL_BLEND_SRC_ALPHA = _GL_ENUM('GL_BLEND_SRC_ALPHA', 32971)
+GL_BLEND_SRC_RGB = _GL_ENUM('GL_BLEND_SRC_RGB', 32969)
+GL_BLUE_BITS = _GL_ENUM('GL_BLUE_BITS', 3412)
+GL_BOOL = _GL_ENUM('GL_BOOL', 35670)
+GL_BOOL_VEC2 = _GL_ENUM('GL_BOOL_VEC2', 35671)
+GL_BOOL_VEC3 = _GL_ENUM('GL_BOOL_VEC3', 35672)
+GL_BOOL_VEC4 = _GL_ENUM('GL_BOOL_VEC4', 35673)
+GL_BUFFER_SIZE = _GL_ENUM('GL_BUFFER_SIZE', 34660)
+GL_BUFFER_USAGE = _GL_ENUM('GL_BUFFER_USAGE', 34661)
+GL_BYTE = _GL_ENUM('GL_BYTE', 5120)
+GL_CCW = _GL_ENUM('GL_CCW', 2305)
+GL_CLAMP_TO_EDGE = _GL_ENUM('GL_CLAMP_TO_EDGE', 33071)
+GL_COLOR_ATTACHMENT0 = _GL_ENUM('GL_COLOR_ATTACHMENT0', 36064)
+GL_COLOR_BUFFER_BIT = _GL_ENUM('GL_COLOR_BUFFER_BIT', 16384)
+GL_COLOR_CLEAR_VALUE = _GL_ENUM('GL_COLOR_CLEAR_VALUE', 3106)
+GL_COLOR_WRITEMASK = _GL_ENUM('GL_COLOR_WRITEMASK', 3107)
+GL_COMPILE_STATUS = _GL_ENUM('GL_COMPILE_STATUS', 35713)
+GL_COMPRESSED_TEXTURE_FORMATS = _GL_ENUM('GL_COMPRESSED_TEXTURE_FORMATS', 34467)
+GL_CONSTANT_ALPHA = _GL_ENUM('GL_CONSTANT_ALPHA', 32771)
+GL_CONSTANT_COLOR = _GL_ENUM('GL_CONSTANT_COLOR', 32769)
+GL_CULL_FACE = _GL_ENUM('GL_CULL_FACE', 2884)
+GL_CULL_FACE_MODE = _GL_ENUM('GL_CULL_FACE_MODE', 2885)
+GL_CURRENT_PROGRAM = _GL_ENUM('GL_CURRENT_PROGRAM', 35725)
+GL_CURRENT_VERTEX_ATTRIB = _GL_ENUM('GL_CURRENT_VERTEX_ATTRIB', 34342)
+GL_CW = _GL_ENUM('GL_CW', 2304)
+GL_DECR = _GL_ENUM('GL_DECR', 7683)
+GL_DECR_WRAP = _GL_ENUM('GL_DECR_WRAP', 34056)
+GL_DELETE_STATUS = _GL_ENUM('GL_DELETE_STATUS', 35712)
+GL_DEPTH_ATTACHMENT = _GL_ENUM('GL_DEPTH_ATTACHMENT', 36096)
+GL_DEPTH_BITS = _GL_ENUM('GL_DEPTH_BITS', 3414)
+GL_DEPTH_BUFFER_BIT = _GL_ENUM('GL_DEPTH_BUFFER_BIT', 256)
+GL_DEPTH_CLEAR_VALUE = _GL_ENUM('GL_DEPTH_CLEAR_VALUE', 2931)
+GL_DEPTH_COMPONENT = _GL_ENUM('GL_DEPTH_COMPONENT', 6402)
+GL_DEPTH_COMPONENT16 = _GL_ENUM('GL_DEPTH_COMPONENT16', 33189)
+GL_DEPTH_FUNC = _GL_ENUM('GL_DEPTH_FUNC', 2932)
+GL_DEPTH_RANGE = _GL_ENUM('GL_DEPTH_RANGE', 2928)
+GL_DEPTH_TEST = _GL_ENUM('GL_DEPTH_TEST', 2929)
+GL_DEPTH_WRITEMASK = _GL_ENUM('GL_DEPTH_WRITEMASK', 2930)
+GL_DITHER = _GL_ENUM('GL_DITHER', 3024)
+GL_DONT_CARE = _GL_ENUM('GL_DONT_CARE', 4352)
+GL_DST_ALPHA = _GL_ENUM('GL_DST_ALPHA', 772)
+GL_DST_COLOR = _GL_ENUM('GL_DST_COLOR', 774)
+GL_DYNAMIC_DRAW = _GL_ENUM('GL_DYNAMIC_DRAW', 35048)
+GL_ELEMENT_ARRAY_BUFFER = _GL_ENUM('GL_ELEMENT_ARRAY_BUFFER', 34963)
+GL_ELEMENT_ARRAY_BUFFER_BINDING = _GL_ENUM('GL_ELEMENT_ARRAY_BUFFER_BINDING', 34965)
+GL_EQUAL = _GL_ENUM('GL_EQUAL', 514)
+GL_ES_VERSION_2_0 = _GL_ENUM('GL_ES_VERSION_2_0', 1)
+GL_EXTENSIONS = _GL_ENUM('GL_EXTENSIONS', 7939)
+GL_FALSE = _GL_ENUM('GL_FALSE', 0)
+GL_FASTEST = _GL_ENUM('GL_FASTEST', 4353)
+GL_FIXED = _GL_ENUM('GL_FIXED', 5132)
+GL_FLOAT = _GL_ENUM('GL_FLOAT', 5126)
+GL_FLOAT_MAT2 = _GL_ENUM('GL_FLOAT_MAT2', 35674)
+GL_FLOAT_MAT3 = _GL_ENUM('GL_FLOAT_MAT3', 35675)
+GL_FLOAT_MAT4 = _GL_ENUM('GL_FLOAT_MAT4', 35676)
+GL_FLOAT_VEC2 = _GL_ENUM('GL_FLOAT_VEC2', 35664)
+GL_FLOAT_VEC3 = _GL_ENUM('GL_FLOAT_VEC3', 35665)
+GL_FLOAT_VEC4 = _GL_ENUM('GL_FLOAT_VEC4', 35666)
+GL_FRAGMENT_SHADER = _GL_ENUM('GL_FRAGMENT_SHADER', 35632)
+GL_FRAMEBUFFER = _GL_ENUM('GL_FRAMEBUFFER', 36160)
+GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME = _GL_ENUM('GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME', 36049)
+GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE = _GL_ENUM('GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE', 36048)
+GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE = _GL_ENUM('GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE', 36051)
+GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL = _GL_ENUM('GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL', 36050)
+GL_FRAMEBUFFER_BINDING = _GL_ENUM('GL_FRAMEBUFFER_BINDING', 36006)
+GL_FRAMEBUFFER_COMPLETE = _GL_ENUM('GL_FRAMEBUFFER_COMPLETE', 36053)
+GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT = _GL_ENUM('GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT', 36054)
+GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS = _GL_ENUM('GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS', 36057)
+GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT = _GL_ENUM('GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT', 36055)
+GL_FRAMEBUFFER_UNSUPPORTED = _GL_ENUM('GL_FRAMEBUFFER_UNSUPPORTED', 36061)
+GL_FRONT = _GL_ENUM('GL_FRONT', 1028)
+GL_FRONT_AND_BACK = _GL_ENUM('GL_FRONT_AND_BACK', 1032)
+GL_FRONT_FACE = _GL_ENUM('GL_FRONT_FACE', 2886)
+GL_FUNC_ADD = _GL_ENUM('GL_FUNC_ADD', 32774)
+GL_FUNC_REVERSE_SUBTRACT = _GL_ENUM('GL_FUNC_REVERSE_SUBTRACT', 32779)
+GL_FUNC_SUBTRACT = _GL_ENUM('GL_FUNC_SUBTRACT', 32778)
+GL_GENERATE_MIPMAP_HINT = _GL_ENUM('GL_GENERATE_MIPMAP_HINT', 33170)
+GL_GEQUAL = _GL_ENUM('GL_GEQUAL', 518)
+GL_GREATER = _GL_ENUM('GL_GREATER', 516)
+GL_GREEN_BITS = _GL_ENUM('GL_GREEN_BITS', 3411)
+GL_HIGH_FLOAT = _GL_ENUM('GL_HIGH_FLOAT', 36338)
+GL_HIGH_INT = _GL_ENUM('GL_HIGH_INT', 36341)
+GL_IMPLEMENTATION_COLOR_READ_FORMAT = _GL_ENUM('GL_IMPLEMENTATION_COLOR_READ_FORMAT', 35739)
+GL_IMPLEMENTATION_COLOR_READ_TYPE = _GL_ENUM('GL_IMPLEMENTATION_COLOR_READ_TYPE', 35738)
+GL_INCR = _GL_ENUM('GL_INCR', 7682)
+GL_INCR_WRAP = _GL_ENUM('GL_INCR_WRAP', 34055)
+GL_INFO_LOG_LENGTH = _GL_ENUM('GL_INFO_LOG_LENGTH', 35716)
+GL_INT = _GL_ENUM('GL_INT', 5124)
+GL_INT_VEC2 = _GL_ENUM('GL_INT_VEC2', 35667)
+GL_INT_VEC3 = _GL_ENUM('GL_INT_VEC3', 35668)
+GL_INT_VEC4 = _GL_ENUM('GL_INT_VEC4', 35669)
+GL_INVALID_ENUM = _GL_ENUM('GL_INVALID_ENUM', 1280)
+GL_INVALID_FRAMEBUFFER_OPERATION = _GL_ENUM('GL_INVALID_FRAMEBUFFER_OPERATION', 1286)
+GL_INVALID_OPERATION = _GL_ENUM('GL_INVALID_OPERATION', 1282)
+GL_INVALID_VALUE = _GL_ENUM('GL_INVALID_VALUE', 1281)
+GL_INVERT = _GL_ENUM('GL_INVERT', 5386)
+GL_KEEP = _GL_ENUM('GL_KEEP', 7680)
+GL_LEQUAL = _GL_ENUM('GL_LEQUAL', 515)
+GL_LESS = _GL_ENUM('GL_LESS', 513)
+GL_LINEAR = _GL_ENUM('GL_LINEAR', 9729)
+GL_LINEAR_MIPMAP_LINEAR = _GL_ENUM('GL_LINEAR_MIPMAP_LINEAR', 9987)
+GL_LINEAR_MIPMAP_NEAREST = _GL_ENUM('GL_LINEAR_MIPMAP_NEAREST', 9985)
+GL_LINES = _GL_ENUM('GL_LINES', 1)
+GL_LINE_LOOP = _GL_ENUM('GL_LINE_LOOP', 2)
+GL_LINE_STRIP = _GL_ENUM('GL_LINE_STRIP', 3)
+GL_LINE_WIDTH = _GL_ENUM('GL_LINE_WIDTH', 2849)
+GL_LINK_STATUS = _GL_ENUM('GL_LINK_STATUS', 35714)
+GL_LOW_FLOAT = _GL_ENUM('GL_LOW_FLOAT', 36336)
+GL_LOW_INT = _GL_ENUM('GL_LOW_INT', 36339)
+GL_LUMINANCE = _GL_ENUM('GL_LUMINANCE', 6409)
+GL_LUMINANCE_ALPHA = _GL_ENUM('GL_LUMINANCE_ALPHA', 6410)
+GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS = _GL_ENUM('GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS', 35661)
+GL_MAX_CUBE_MAP_TEXTURE_SIZE = _GL_ENUM('GL_MAX_CUBE_MAP_TEXTURE_SIZE', 34076)
+GL_MAX_FRAGMENT_UNIFORM_VECTORS = _GL_ENUM('GL_MAX_FRAGMENT_UNIFORM_VECTORS', 36349)
+GL_MAX_RENDERBUFFER_SIZE = _GL_ENUM('GL_MAX_RENDERBUFFER_SIZE', 34024)
+GL_MAX_TEXTURE_IMAGE_UNITS = _GL_ENUM('GL_MAX_TEXTURE_IMAGE_UNITS', 34930)
+GL_MAX_TEXTURE_SIZE = _GL_ENUM('GL_MAX_TEXTURE_SIZE', 3379)
+GL_MAX_VARYING_VECTORS = _GL_ENUM('GL_MAX_VARYING_VECTORS', 36348)
+GL_MAX_VERTEX_ATTRIBS = _GL_ENUM('GL_MAX_VERTEX_ATTRIBS', 34921)
+GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS = _GL_ENUM('GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS', 35660)
+GL_MAX_VERTEX_UNIFORM_VECTORS = _GL_ENUM('GL_MAX_VERTEX_UNIFORM_VECTORS', 36347)
+GL_MAX_VIEWPORT_DIMS = _GL_ENUM('GL_MAX_VIEWPORT_DIMS', 3386)
+GL_MEDIUM_FLOAT = _GL_ENUM('GL_MEDIUM_FLOAT', 36337)
+GL_MEDIUM_INT = _GL_ENUM('GL_MEDIUM_INT', 36340)
+GL_MIRRORED_REPEAT = _GL_ENUM('GL_MIRRORED_REPEAT', 33648)
+GL_NEAREST = _GL_ENUM('GL_NEAREST', 9728)
+GL_NEAREST_MIPMAP_LINEAR = _GL_ENUM('GL_NEAREST_MIPMAP_LINEAR', 9986)
+GL_NEAREST_MIPMAP_NEAREST = _GL_ENUM('GL_NEAREST_MIPMAP_NEAREST', 9984)
+GL_NEVER = _GL_ENUM('GL_NEVER', 512)
+GL_NICEST = _GL_ENUM('GL_NICEST', 4354)
+GL_NONE = _GL_ENUM('GL_NONE', 0)
+GL_NOTEQUAL = _GL_ENUM('GL_NOTEQUAL', 517)
+GL_NO_ERROR = _GL_ENUM('GL_NO_ERROR', 0)
+GL_NUM_COMPRESSED_TEXTURE_FORMATS = _GL_ENUM('GL_NUM_COMPRESSED_TEXTURE_FORMATS', 34466)
+GL_NUM_SHADER_BINARY_FORMATS = _GL_ENUM('GL_NUM_SHADER_BINARY_FORMATS', 36345)
+GL_ONE = _GL_ENUM('GL_ONE', 1)
+GL_ONE_MINUS_CONSTANT_ALPHA = _GL_ENUM('GL_ONE_MINUS_CONSTANT_ALPHA', 32772)
+GL_ONE_MINUS_CONSTANT_COLOR = _GL_ENUM('GL_ONE_MINUS_CONSTANT_COLOR', 32770)
+GL_ONE_MINUS_DST_ALPHA = _GL_ENUM('GL_ONE_MINUS_DST_ALPHA', 773)
+GL_ONE_MINUS_DST_COLOR = _GL_ENUM('GL_ONE_MINUS_DST_COLOR', 775)
+GL_ONE_MINUS_SRC_ALPHA = _GL_ENUM('GL_ONE_MINUS_SRC_ALPHA', 771)
+GL_ONE_MINUS_SRC_COLOR = _GL_ENUM('GL_ONE_MINUS_SRC_COLOR', 769)
+GL_OUT_OF_MEMORY = _GL_ENUM('GL_OUT_OF_MEMORY', 1285)
+GL_PACK_ALIGNMENT = _GL_ENUM('GL_PACK_ALIGNMENT', 3333)
+GL_POINTS = _GL_ENUM('GL_POINTS', 0)
+GL_POLYGON_OFFSET_FACTOR = _GL_ENUM('GL_POLYGON_OFFSET_FACTOR', 32824)
+GL_POLYGON_OFFSET_FILL = _GL_ENUM('GL_POLYGON_OFFSET_FILL', 32823)
+GL_POLYGON_OFFSET_UNITS = _GL_ENUM('GL_POLYGON_OFFSET_UNITS', 10752)
+GL_RED_BITS = _GL_ENUM('GL_RED_BITS', 3410)
+GL_RENDERBUFFER = _GL_ENUM('GL_RENDERBUFFER', 36161)
+GL_RENDERBUFFER_ALPHA_SIZE = _GL_ENUM('GL_RENDERBUFFER_ALPHA_SIZE', 36179)
+GL_RENDERBUFFER_BINDING = _GL_ENUM('GL_RENDERBUFFER_BINDING', 36007)
+GL_RENDERBUFFER_BLUE_SIZE = _GL_ENUM('GL_RENDERBUFFER_BLUE_SIZE', 36178)
+GL_RENDERBUFFER_DEPTH_SIZE = _GL_ENUM('GL_RENDERBUFFER_DEPTH_SIZE', 36180)
+GL_RENDERBUFFER_GREEN_SIZE = _GL_ENUM('GL_RENDERBUFFER_GREEN_SIZE', 36177)
+GL_RENDERBUFFER_HEIGHT = _GL_ENUM('GL_RENDERBUFFER_HEIGHT', 36163)
+GL_RENDERBUFFER_INTERNAL_FORMAT = _GL_ENUM('GL_RENDERBUFFER_INTERNAL_FORMAT', 36164)
+GL_RENDERBUFFER_RED_SIZE = _GL_ENUM('GL_RENDERBUFFER_RED_SIZE', 36176)
+GL_RENDERBUFFER_STENCIL_SIZE = _GL_ENUM('GL_RENDERBUFFER_STENCIL_SIZE', 36181)
+GL_RENDERBUFFER_WIDTH = _GL_ENUM('GL_RENDERBUFFER_WIDTH', 36162)
+GL_RENDERER = _GL_ENUM('GL_RENDERER', 7937)
+GL_REPEAT = _GL_ENUM('GL_REPEAT', 10497)
+GL_REPLACE = _GL_ENUM('GL_REPLACE', 7681)
+GL_RGB = _GL_ENUM('GL_RGB', 6407)
+GL_RGB565 = _GL_ENUM('GL_RGB565', 36194)
+GL_RGB5_A1 = _GL_ENUM('GL_RGB5_A1', 32855)
+GL_RGBA = _GL_ENUM('GL_RGBA', 6408)
+GL_RGBA4 = _GL_ENUM('GL_RGBA4', 32854)
+GL_SAMPLER_2D = _GL_ENUM('GL_SAMPLER_2D', 35678)
+GL_SAMPLER_CUBE = _GL_ENUM('GL_SAMPLER_CUBE', 35680)
+GL_SAMPLES = _GL_ENUM('GL_SAMPLES', 32937)
+GL_SAMPLE_ALPHA_TO_COVERAGE = _GL_ENUM('GL_SAMPLE_ALPHA_TO_COVERAGE', 32926)
+GL_SAMPLE_BUFFERS = _GL_ENUM('GL_SAMPLE_BUFFERS', 32936)
+GL_SAMPLE_COVERAGE = _GL_ENUM('GL_SAMPLE_COVERAGE', 32928)
+GL_SAMPLE_COVERAGE_INVERT = _GL_ENUM('GL_SAMPLE_COVERAGE_INVERT', 32939)
+GL_SAMPLE_COVERAGE_VALUE = _GL_ENUM('GL_SAMPLE_COVERAGE_VALUE', 32938)
+GL_SCISSOR_BOX = _GL_ENUM('GL_SCISSOR_BOX', 3088)
+GL_SCISSOR_TEST = _GL_ENUM('GL_SCISSOR_TEST', 3089)
+GL_SHADER_BINARY_FORMATS = _GL_ENUM('GL_SHADER_BINARY_FORMATS', 36344)
+GL_SHADER_COMPILER = _GL_ENUM('GL_SHADER_COMPILER', 36346)
+GL_SHADER_SOURCE_LENGTH = _GL_ENUM('GL_SHADER_SOURCE_LENGTH', 35720)
+GL_SHADER_TYPE = _GL_ENUM('GL_SHADER_TYPE', 35663)
+GL_SHADING_LANGUAGE_VERSION = _GL_ENUM('GL_SHADING_LANGUAGE_VERSION', 35724)
+GL_SHORT = _GL_ENUM('GL_SHORT', 5122)
+GL_SRC_ALPHA = _GL_ENUM('GL_SRC_ALPHA', 770)
+GL_SRC_ALPHA_SATURATE = _GL_ENUM('GL_SRC_ALPHA_SATURATE', 776)
+GL_SRC_COLOR = _GL_ENUM('GL_SRC_COLOR', 768)
+GL_STATIC_DRAW = _GL_ENUM('GL_STATIC_DRAW', 35044)
+GL_STENCIL_ATTACHMENT = _GL_ENUM('GL_STENCIL_ATTACHMENT', 36128)
+GL_STENCIL_BACK_FAIL = _GL_ENUM('GL_STENCIL_BACK_FAIL', 34817)
+GL_STENCIL_BACK_FUNC = _GL_ENUM('GL_STENCIL_BACK_FUNC', 34816)
+GL_STENCIL_BACK_PASS_DEPTH_FAIL = _GL_ENUM('GL_STENCIL_BACK_PASS_DEPTH_FAIL', 34818)
+GL_STENCIL_BACK_PASS_DEPTH_PASS = _GL_ENUM('GL_STENCIL_BACK_PASS_DEPTH_PASS', 34819)
+GL_STENCIL_BACK_REF = _GL_ENUM('GL_STENCIL_BACK_REF', 36003)
+GL_STENCIL_BACK_VALUE_MASK = _GL_ENUM('GL_STENCIL_BACK_VALUE_MASK', 36004)
+GL_STENCIL_BACK_WRITEMASK = _GL_ENUM('GL_STENCIL_BACK_WRITEMASK', 36005)
+GL_STENCIL_BITS = _GL_ENUM('GL_STENCIL_BITS', 3415)
+GL_STENCIL_BUFFER_BIT = _GL_ENUM('GL_STENCIL_BUFFER_BIT', 1024)
+GL_STENCIL_CLEAR_VALUE = _GL_ENUM('GL_STENCIL_CLEAR_VALUE', 2961)
+GL_STENCIL_FAIL = _GL_ENUM('GL_STENCIL_FAIL', 2964)
+GL_STENCIL_FUNC = _GL_ENUM('GL_STENCIL_FUNC', 2962)
+GL_STENCIL_INDEX8 = _GL_ENUM('GL_STENCIL_INDEX8', 36168)
+GL_STENCIL_PASS_DEPTH_FAIL = _GL_ENUM('GL_STENCIL_PASS_DEPTH_FAIL', 2965)
+GL_STENCIL_PASS_DEPTH_PASS = _GL_ENUM('GL_STENCIL_PASS_DEPTH_PASS', 2966)
+GL_STENCIL_REF = _GL_ENUM('GL_STENCIL_REF', 2967)
+GL_STENCIL_TEST = _GL_ENUM('GL_STENCIL_TEST', 2960)
+GL_STENCIL_VALUE_MASK = _GL_ENUM('GL_STENCIL_VALUE_MASK', 2963)
+GL_STENCIL_WRITEMASK = _GL_ENUM('GL_STENCIL_WRITEMASK', 2968)
+GL_STREAM_DRAW = _GL_ENUM('GL_STREAM_DRAW', 35040)
+GL_SUBPIXEL_BITS = _GL_ENUM('GL_SUBPIXEL_BITS', 3408)
+GL_TEXTURE = _GL_ENUM('GL_TEXTURE', 5890)
+GL_TEXTURE0 = _GL_ENUM('GL_TEXTURE0', 33984)
+GL_TEXTURE1 = _GL_ENUM('GL_TEXTURE1', 33985)
+GL_TEXTURE10 = _GL_ENUM('GL_TEXTURE10', 33994)
+GL_TEXTURE11 = _GL_ENUM('GL_TEXTURE11', 33995)
+GL_TEXTURE12 = _GL_ENUM('GL_TEXTURE12', 33996)
+GL_TEXTURE13 = _GL_ENUM('GL_TEXTURE13', 33997)
+GL_TEXTURE14 = _GL_ENUM('GL_TEXTURE14', 33998)
+GL_TEXTURE15 = _GL_ENUM('GL_TEXTURE15', 33999)
+GL_TEXTURE16 = _GL_ENUM('GL_TEXTURE16', 34000)
+GL_TEXTURE17 = _GL_ENUM('GL_TEXTURE17', 34001)
+GL_TEXTURE18 = _GL_ENUM('GL_TEXTURE18', 34002)
+GL_TEXTURE19 = _GL_ENUM('GL_TEXTURE19', 34003)
+GL_TEXTURE2 = _GL_ENUM('GL_TEXTURE2', 33986)
+GL_TEXTURE20 = _GL_ENUM('GL_TEXTURE20', 34004)
+GL_TEXTURE21 = _GL_ENUM('GL_TEXTURE21', 34005)
+GL_TEXTURE22 = _GL_ENUM('GL_TEXTURE22', 34006)
+GL_TEXTURE23 = _GL_ENUM('GL_TEXTURE23', 34007)
+GL_TEXTURE24 = _GL_ENUM('GL_TEXTURE24', 34008)
+GL_TEXTURE25 = _GL_ENUM('GL_TEXTURE25', 34009)
+GL_TEXTURE26 = _GL_ENUM('GL_TEXTURE26', 34010)
+GL_TEXTURE27 = _GL_ENUM('GL_TEXTURE27', 34011)
+GL_TEXTURE28 = _GL_ENUM('GL_TEXTURE28', 34012)
+GL_TEXTURE29 = _GL_ENUM('GL_TEXTURE29', 34013)
+GL_TEXTURE3 = _GL_ENUM('GL_TEXTURE3', 33987)
+GL_TEXTURE30 = _GL_ENUM('GL_TEXTURE30', 34014)
+GL_TEXTURE31 = _GL_ENUM('GL_TEXTURE31', 34015)
+GL_TEXTURE4 = _GL_ENUM('GL_TEXTURE4', 33988)
+GL_TEXTURE5 = _GL_ENUM('GL_TEXTURE5', 33989)
+GL_TEXTURE6 = _GL_ENUM('GL_TEXTURE6', 33990)
+GL_TEXTURE7 = _GL_ENUM('GL_TEXTURE7', 33991)
+GL_TEXTURE8 = _GL_ENUM('GL_TEXTURE8', 33992)
+GL_TEXTURE9 = _GL_ENUM('GL_TEXTURE9', 33993)
+GL_TEXTURE_2D = _GL_ENUM('GL_TEXTURE_2D', 3553)
+GL_TEXTURE_BINDING_2D = _GL_ENUM('GL_TEXTURE_BINDING_2D', 32873)
+GL_TEXTURE_BINDING_CUBE_MAP = _GL_ENUM('GL_TEXTURE_BINDING_CUBE_MAP', 34068)
+GL_TEXTURE_CUBE_MAP = _GL_ENUM('GL_TEXTURE_CUBE_MAP', 34067)
+GL_TEXTURE_CUBE_MAP_NEGATIVE_X = _GL_ENUM('GL_TEXTURE_CUBE_MAP_NEGATIVE_X', 34070)
+GL_TEXTURE_CUBE_MAP_NEGATIVE_Y = _GL_ENUM('GL_TEXTURE_CUBE_MAP_NEGATIVE_Y', 34072)
+GL_TEXTURE_CUBE_MAP_NEGATIVE_Z = _GL_ENUM('GL_TEXTURE_CUBE_MAP_NEGATIVE_Z', 34074)
+GL_TEXTURE_CUBE_MAP_POSITIVE_X = _GL_ENUM('GL_TEXTURE_CUBE_MAP_POSITIVE_X', 34069)
+GL_TEXTURE_CUBE_MAP_POSITIVE_Y = _GL_ENUM('GL_TEXTURE_CUBE_MAP_POSITIVE_Y', 34071)
+GL_TEXTURE_CUBE_MAP_POSITIVE_Z = _GL_ENUM('GL_TEXTURE_CUBE_MAP_POSITIVE_Z', 34073)
+GL_TEXTURE_MAG_FILTER = _GL_ENUM('GL_TEXTURE_MAG_FILTER', 10240)
+GL_TEXTURE_MIN_FILTER = _GL_ENUM('GL_TEXTURE_MIN_FILTER', 10241)
+GL_TEXTURE_WRAP_S = _GL_ENUM('GL_TEXTURE_WRAP_S', 10242)
+GL_TEXTURE_WRAP_T = _GL_ENUM('GL_TEXTURE_WRAP_T', 10243)
+GL_TRIANGLES = _GL_ENUM('GL_TRIANGLES', 4)
+GL_TRIANGLE_FAN = _GL_ENUM('GL_TRIANGLE_FAN', 6)
+GL_TRIANGLE_STRIP = _GL_ENUM('GL_TRIANGLE_STRIP', 5)
+GL_TRUE = _GL_ENUM('GL_TRUE', 1)
+GL_UNPACK_ALIGNMENT = _GL_ENUM('GL_UNPACK_ALIGNMENT', 3317)
+GL_UNSIGNED_BYTE = _GL_ENUM('GL_UNSIGNED_BYTE', 5121)
+GL_UNSIGNED_INT = _GL_ENUM('GL_UNSIGNED_INT', 5125)
+GL_UNSIGNED_SHORT = _GL_ENUM('GL_UNSIGNED_SHORT', 5123)
+GL_UNSIGNED_SHORT_4_4_4_4 = _GL_ENUM('GL_UNSIGNED_SHORT_4_4_4_4', 32819)
+GL_UNSIGNED_SHORT_5_5_5_1 = _GL_ENUM('GL_UNSIGNED_SHORT_5_5_5_1', 32820)
+GL_UNSIGNED_SHORT_5_6_5 = _GL_ENUM('GL_UNSIGNED_SHORT_5_6_5', 33635)
+GL_VALIDATE_STATUS = _GL_ENUM('GL_VALIDATE_STATUS', 35715)
+GL_VENDOR = _GL_ENUM('GL_VENDOR', 7936)
+GL_VERSION = _GL_ENUM('GL_VERSION', 7938)
+GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING = _GL_ENUM('GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING', 34975)
+GL_VERTEX_ATTRIB_ARRAY_ENABLED = _GL_ENUM('GL_VERTEX_ATTRIB_ARRAY_ENABLED', 34338)
+GL_VERTEX_ATTRIB_ARRAY_NORMALIZED = _GL_ENUM('GL_VERTEX_ATTRIB_ARRAY_NORMALIZED', 34922)
+GL_VERTEX_ATTRIB_ARRAY_POINTER = _GL_ENUM('GL_VERTEX_ATTRIB_ARRAY_POINTER', 34373)
+GL_VERTEX_ATTRIB_ARRAY_SIZE = _GL_ENUM('GL_VERTEX_ATTRIB_ARRAY_SIZE', 34339)
+GL_VERTEX_ATTRIB_ARRAY_STRIDE = _GL_ENUM('GL_VERTEX_ATTRIB_ARRAY_STRIDE', 34340)
+GL_VERTEX_ATTRIB_ARRAY_TYPE = _GL_ENUM('GL_VERTEX_ATTRIB_ARRAY_TYPE', 34341)
+GL_VERTEX_SHADER = _GL_ENUM('GL_VERTEX_SHADER', 35633)
+GL_VIEWPORT = _GL_ENUM('GL_VIEWPORT', 2978)
+GL_ZERO = _GL_ENUM('GL_ZERO', 0)
diff --git a/vispy/gloo/gl/_constants_ext.py b/vispy/gloo/gl/_constants_ext.py
new file mode 100644
index 0000000..d350945
--- /dev/null
+++ b/vispy/gloo/gl/_constants_ext.py
@@ -0,0 +1,96 @@
+"""
+
+THIS CODE IS AUTO-GENERATED. DO NOT EDIT.
+
+Constants for OpenGL ES 2.0.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from . import _GL_ENUM
+
+
+GL_ALPHA8 = _GL_ENUM('GL_ALPHA8', 32828)
+GL_BUFFER_ACCESS = _GL_ENUM('GL_BUFFER_ACCESS', 35003)
+GL_BUFFER_MAPPED = _GL_ENUM('GL_BUFFER_MAPPED', 35004)
+GL_BUFFER_MAP_POINTER = _GL_ENUM('GL_BUFFER_MAP_POINTER', 35005)
+GL_DEPTH24_STENCIL8 = _GL_ENUM('GL_DEPTH24_STENCIL8', 35056)
+GL_DEPTH24_STENCIL8 = _GL_ENUM('GL_DEPTH24_STENCIL8', 35056)
+GL_DEPTH_COMPONENT16 = _GL_ENUM('GL_DEPTH_COMPONENT16', 33189)
+GL_DEPTH_COMPONENT24 = _GL_ENUM('GL_DEPTH_COMPONENT24', 33190)
+GL_DEPTH_COMPONENT32 = _GL_ENUM('GL_DEPTH_COMPONENT32', 33191)
+GL_DEPTH_COMPONENT32 = _GL_ENUM('GL_DEPTH_COMPONENT32', 33191)
+GL_DEPTH_STENCIL = _GL_ENUM('GL_DEPTH_STENCIL', 34041)
+GL_DEPTH_STENCIL = _GL_ENUM('GL_DEPTH_STENCIL', 34041)
+GL_EGL_image = _GL_ENUM('GL_EGL_image', 1)
+GL_EGL_image_external = _GL_ENUM('GL_EGL_image_external', 1)
+GL_ETC1_RGB8 = _GL_ENUM('GL_ETC1_RGB8', 36196)
+GL_FRAGMENT_SHADER_DERIVATIVE_HINT = _GL_ENUM('GL_FRAGMENT_SHADER_DERIVATIVE_HINT', 35723)
+GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET = _GL_ENUM('GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_3D_ZOFFSET', 36052)
+GL_FRAMEBUFFER_UNDEFINED = _GL_ENUM('GL_FRAMEBUFFER_UNDEFINED', 33305)
+GL_HALF_FLOAT = _GL_ENUM('GL_HALF_FLOAT', 36193)
+GL_INT_10_10_10_2 = _GL_ENUM('GL_INT_10_10_10_2', 36343)
+GL_LUMINANCE4_ALPHA4 = _GL_ENUM('GL_LUMINANCE4_ALPHA4', 32835)
+GL_LUMINANCE8 = _GL_ENUM('GL_LUMINANCE8', 32832)
+GL_LUMINANCE8_ALPHA8 = _GL_ENUM('GL_LUMINANCE8_ALPHA8', 32837)
+GL_MAX_3D_TEXTURE_SIZE = _GL_ENUM('GL_MAX_3D_TEXTURE_SIZE', 32883)
+GL_NUM_PROGRAM_BINARY_FORMATS = _GL_ENUM('GL_NUM_PROGRAM_BINARY_FORMATS', 34814)
+GL_PALETTE4_R5_G6_B5 = _GL_ENUM('GL_PALETTE4_R5_G6_B5', 35730)
+GL_PALETTE4_RGB5_A1 = _GL_ENUM('GL_PALETTE4_RGB5_A1', 35732)
+GL_PALETTE4_RGB8 = _GL_ENUM('GL_PALETTE4_RGB8', 35728)
+GL_PALETTE4_RGBA4 = _GL_ENUM('GL_PALETTE4_RGBA4', 35731)
+GL_PALETTE4_RGBA8 = _GL_ENUM('GL_PALETTE4_RGBA8', 35729)
+GL_PALETTE8_R5_G6_B5 = _GL_ENUM('GL_PALETTE8_R5_G6_B5', 35735)
+GL_PALETTE8_RGB5_A1 = _GL_ENUM('GL_PALETTE8_RGB5_A1', 35737)
+GL_PALETTE8_RGB8 = _GL_ENUM('GL_PALETTE8_RGB8', 35733)
+GL_PALETTE8_RGBA4 = _GL_ENUM('GL_PALETTE8_RGBA4', 35736)
+GL_PALETTE8_RGBA8 = _GL_ENUM('GL_PALETTE8_RGBA8', 35734)
+GL_PROGRAM_BINARY_FORMATS = _GL_ENUM('GL_PROGRAM_BINARY_FORMATS', 34815)
+GL_PROGRAM_BINARY_LENGTH = _GL_ENUM('GL_PROGRAM_BINARY_LENGTH', 34625)
+GL_REQUIRED_TEXTURE_IMAGE_UNITS = _GL_ENUM('GL_REQUIRED_TEXTURE_IMAGE_UNITS', 36200)
+GL_RGB565 = _GL_ENUM('GL_RGB565', 36194)
+GL_RGB5_A1 = _GL_ENUM('GL_RGB5_A1', 32855)
+GL_RGB8 = _GL_ENUM('GL_RGB8', 32849)
+GL_RGBA4 = _GL_ENUM('GL_RGBA4', 32854)
+GL_RGBA8 = _GL_ENUM('GL_RGBA8', 32856)
+GL_SAMPLER_3D = _GL_ENUM('GL_SAMPLER_3D', 35679)
+GL_SAMPLER_EXTERNAL = _GL_ENUM('GL_SAMPLER_EXTERNAL', 36198)
+GL_STENCIL_INDEX1 = _GL_ENUM('GL_STENCIL_INDEX1', 36166)
+GL_STENCIL_INDEX4 = _GL_ENUM('GL_STENCIL_INDEX4', 36167)
+GL_TEXTURE_3D = _GL_ENUM('GL_TEXTURE_3D', 32879)
+GL_TEXTURE_BINDING_3D = _GL_ENUM('GL_TEXTURE_BINDING_3D', 32874)
+GL_TEXTURE_BINDING_EXTERNAL = _GL_ENUM('GL_TEXTURE_BINDING_EXTERNAL', 36199)
+GL_TEXTURE_EXTERNAL = _GL_ENUM('GL_TEXTURE_EXTERNAL', 36197)
+GL_TEXTURE_WRAP_R = _GL_ENUM('GL_TEXTURE_WRAP_R', 32882)
+GL_UNSIGNED_INT_10_10_10_2 = _GL_ENUM('GL_UNSIGNED_INT_10_10_10_2', 36342)
+GL_UNSIGNED_INT_24_8 = _GL_ENUM('GL_UNSIGNED_INT_24_8', 34042)
+GL_UNSIGNED_INT_24_8 = _GL_ENUM('GL_UNSIGNED_INT_24_8', 34042)
+GL_VERTEX_ARRAY_BINDING = _GL_ENUM('GL_VERTEX_ARRAY_BINDING', 34229)
+GL_WRITE_ONLY = _GL_ENUM('GL_WRITE_ONLY', 35001)
+GL_compressed_ETC1_RGB8_texture = _GL_ENUM('GL_compressed_ETC1_RGB8_texture', 1)
+GL_compressed_paletted_texture = _GL_ENUM('GL_compressed_paletted_texture', 1)
+GL_depth24 = _GL_ENUM('GL_depth24', 1)
+GL_depth32 = _GL_ENUM('GL_depth32', 1)
+GL_depth_texture = _GL_ENUM('GL_depth_texture', 1)
+GL_element_index_uint = _GL_ENUM('GL_element_index_uint', 1)
+GL_fbo_render_mipmap = _GL_ENUM('GL_fbo_render_mipmap', 1)
+GL_fragment_precision_high = _GL_ENUM('GL_fragment_precision_high', 1)
+GL_get_program_binary = _GL_ENUM('GL_get_program_binary', 1)
+GL_mapbuffer = _GL_ENUM('GL_mapbuffer', 1)
+GL_packed_depth_stencil = _GL_ENUM('GL_packed_depth_stencil', 1)
+GL_required_internalformat = _GL_ENUM('GL_required_internalformat', 1)
+GL_rgb8_rgba8 = _GL_ENUM('GL_rgb8_rgba8', 1)
+GL_standard_derivatives = _GL_ENUM('GL_standard_derivatives', 1)
+GL_stencil1 = _GL_ENUM('GL_stencil1', 1)
+GL_stencil4 = _GL_ENUM('GL_stencil4', 1)
+GL_surfaceless_context = _GL_ENUM('GL_surfaceless_context', 1)
+GL_texture_3D = _GL_ENUM('GL_texture_3D', 1)
+GL_texture_float = _GL_ENUM('GL_texture_float', 1)
+GL_texture_float_linear = _GL_ENUM('GL_texture_float_linear', 1)
+GL_texture_half_float = _GL_ENUM('GL_texture_half_float', 1)
+GL_texture_half_float_linear = _GL_ENUM('GL_texture_half_float_linear', 1)
+GL_texture_npot = _GL_ENUM('GL_texture_npot', 1)
+GL_vertex_array_object = _GL_ENUM('GL_vertex_array_object', 1)
+GL_vertex_half_float = _GL_ENUM('GL_vertex_half_float', 1)
+GL_vertex_type_10_10_10_2 = _GL_ENUM('GL_vertex_type_10_10_10_2', 1)
diff --git a/vispy/gloo/gl/_desktop.py b/vispy/gloo/gl/_desktop.py
new file mode 100644
index 0000000..888a1b5
--- /dev/null
+++ b/vispy/gloo/gl/_desktop.py
@@ -0,0 +1,158 @@
+"""
+
+THIS CODE IS AUTO-GENERATED. DO NOT EDIT.
+
+OpenGL ES 2.0 API based on desktop OpenGL (via pyOpenGL).
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from ._constants import *
+
+
+_glfunctions = [
+ "glActiveTexture",
+ "glAttachShader",
+ "glBindAttribLocation",
+ "glBindBuffer",
+ "glBindFramebuffer",
+ "glBindRenderbuffer",
+ "glBindTexture",
+ "glBlendColor",
+ "glBlendEquation",
+ "glBlendEquationSeparate",
+ "glBlendFunc",
+ "glBlendFuncSeparate",
+ "glBufferData",
+ "glBufferSubData",
+ "glCheckFramebufferStatus",
+ "glClear",
+ "glClearColor",
+ "glClearDepthf",
+ "glClearStencil",
+ "glColorMask",
+ "glCompileShader",
+ "glCompressedTexImage2D",
+ "glCompressedTexSubImage2D",
+ "glCopyTexImage2D",
+ "glCopyTexSubImage2D",
+ "glCreateProgram",
+ "glCreateShader",
+ "glCullFace",
+ "glDeleteBuffers",
+ "glDeleteFramebuffers",
+ "glDeleteProgram",
+ "glDeleteRenderbuffers",
+ "glDeleteShader",
+ "glDeleteTextures",
+ "glDepthFunc",
+ "glDepthMask",
+ "glDepthRangef",
+ "glDetachShader",
+ "glDisable",
+ "glDisableVertexAttribArray",
+ "glDrawArrays",
+ "glDrawElements",
+ "glEnable",
+ "glEnableVertexAttribArray",
+ "glFinish",
+ "glFlush",
+ "glFramebufferRenderbuffer",
+ "glFramebufferTexture2D",
+ "glFrontFace",
+ "glGenBuffers",
+ "glGenFramebuffers",
+ "glGenRenderbuffers",
+ "glGenTextures",
+ "glGenerateMipmap",
+ "glGetActiveAttrib",
+ "glGetActiveUniform",
+ "glGetAttachedShaders",
+ "glGetAttribLocation",
+ "glGetBooleanv",
+ "glGetBufferParameteriv",
+ "glGetError",
+ "glGetFloatv",
+ "glGetFramebufferAttachmentParameteriv",
+ "glGetIntegerv",
+ "glGetProgramInfoLog",
+ "glGetProgramiv",
+ "glGetRenderbufferParameteriv",
+ "glGetShaderInfoLog",
+ "glGetShaderPrecisionFormat",
+ "glGetShaderSource",
+ "glGetShaderiv",
+ "glGetString",
+ "glGetTexParameterfv",
+ "glGetTexParameteriv",
+ "glGetUniformLocation",
+ "glGetUniformfv",
+ "glGetUniformiv",
+ "glGetVertexAttribPointerv",
+ "glGetVertexAttribfv",
+ "glGetVertexAttribiv",
+ "glHint",
+ "glIsBuffer",
+ "glIsEnabled",
+ "glIsFramebuffer",
+ "glIsProgram",
+ "glIsRenderbuffer",
+ "glIsShader",
+ "glIsTexture",
+ "glLineWidth",
+ "glLinkProgram",
+ "glPixelStorei",
+ "glPolygonOffset",
+ "glReadPixels",
+ "glReleaseShaderCompiler",
+ "glRenderbufferStorage",
+ "glSampleCoverage",
+ "glScissor",
+ "glShaderBinary",
+ "glShaderSource",
+ "glStencilFunc",
+ "glStencilFuncSeparate",
+ "glStencilMask",
+ "glStencilMaskSeparate",
+ "glStencilOp",
+ "glStencilOpSeparate",
+ "glTexImage2D",
+ "glTexParameter",
+ "glTexParameterf",
+ "glTexParameterfv",
+ "glTexParameteri",
+ "glTexParameteriv",
+ "glTexSubImage2D",
+ "glUniform1f",
+ "glUniform1fv",
+ "glUniform1i",
+ "glUniform1iv",
+ "glUniform2f",
+ "glUniform2fv",
+ "glUniform2i",
+ "glUniform2iv",
+ "glUniform3f",
+ "glUniform3fv",
+ "glUniform3i",
+ "glUniform3iv",
+ "glUniform4f",
+ "glUniform4fv",
+ "glUniform4i",
+ "glUniform4iv",
+ "glUniformMatrix2fv",
+ "glUniformMatrix3fv",
+ "glUniformMatrix4fv",
+ "glUseProgram",
+ "glValidateProgram",
+ "glVertexAttrib1f",
+ "glVertexAttrib1fv",
+ "glVertexAttrib2f",
+ "glVertexAttrib2fv",
+ "glVertexAttrib3f",
+ "glVertexAttrib3fv",
+ "glVertexAttrib4f",
+ "glVertexAttrib4fv",
+ "glVertexAttribPointer",
+ "glViewport",
+ ]
diff --git a/vispy/gloo/gl/_desktop_ext.py b/vispy/gloo/gl/_desktop_ext.py
new file mode 100644
index 0000000..970778f
--- /dev/null
+++ b/vispy/gloo/gl/_desktop_ext.py
@@ -0,0 +1,30 @@
+"""
+
+THIS CODE IS AUTO-GENERATED. DO NOT EDIT.
+
+OpenGL ES 2.0 API based on desktop OpenGL (via pyOpenGL).
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from ._constants_ext import *
+
+
+_glfunctions = [
+ "glBindVertexArray",
+ "glCompressedTexImage3D",
+ "glCompressedTexSubImage3D",
+ "glCopyTexSubImage3D",
+ "glDeleteVertexArrays",
+ "glFramebufferTexture3D",
+ "glGenVertexArrays",
+ "glGetBufferPointerv",
+ "glGetProgramBinary",
+ "glIsVertexArray",
+ "glMapBuffer",
+ "glProgramBinary",
+ "glTexImage3D",
+ "glTexSubImage3D",
+ "glUnmapBuffer",
+ ]
diff --git a/vispy/gloo/gl/desktop.py b/vispy/gloo/gl/desktop.py
new file mode 100644
index 0000000..7869ea3
--- /dev/null
+++ b/vispy/gloo/gl/desktop.py
@@ -0,0 +1,165 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" vispy.gloo.gl.desktop: namespace for OpenGL ES 2.0 API based on the
+desktop OpenGL implementation.
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from OpenGL import GL as _GL
+import OpenGL.GL.framebufferobjects as FBO
+
+from . import _GL_ENUM
+from . import _desktop, _desktop_ext
+
+# Prepare namespace with constants and ext
+from ._constants import *
+ext = _desktop_ext
+
+
+
+def _make_unavailable_func(funcname):
+ def cb(*args, **kwds):
+ raise RuntimeError('OpenGL API call "%s" is not available.' % funcname)
+ return cb
+
+
+def _get_function_from_pyopengl(funcname):
+ """ Try getting the given function from PyOpenGL, return
+ a dummy function (that prints a warning when called) if it
+ could not be found.
+ """
+ func = None
+ # Get function from GL
+ try:
+ func = getattr(_GL, funcname)
+ except AttributeError:
+ # Get function from FBO
+
+ try:
+ func = getattr(FBO, funcname)
+ except AttributeError:
+ # Some functions are known by a slightly different name
+ # e.g. glDepthRangef, glDepthRangef
+ if funcname.endswith('f'):
+ try:
+ func = getattr(_GL, funcname[:-1])
+ except AttributeError:
+ pass
+
+ # Set dummy function if we could not find it
+ if func is None:
+ func = _make_unavailable_func(funcname)
+ if True or show_warnings:
+ print('warning: %s not available' % funcname )
+ return func
+
+
+def _inject():
+ """ Get GL functions from pyopengl. Inject in *this* namespace
+ and the ext namespace.
+ Note the similatity with vispy.gloo.gl.use().
+ """
+ import vispy
+ show_warnings = vispy.config['show_warnings']
+ import OpenGL.GL.framebufferobjects as FBO
+
+ # Import functions here
+ NS = globals()
+ funcnames = _desktop._glfunctions
+ for name in funcnames:
+ func = _get_function_from_pyopengl(name)
+ NS[name] = func
+
+ # Import functions in ext
+ NS = ext.__dict__
+ funcnames = _desktop_ext._glfunctions
+ for name in funcnames:
+ func = _get_function_from_pyopengl(name)
+ NS[name] = func
+
+
+def _fix():
+ """ Apply some fixes and patches.
+ """
+ NS = globals()
+ # Fix glGetActiveAttrib, since if its just the ctypes function
+ if ( 'glGetActiveAttrib' in NS and
+ hasattr(NS['glGetActiveAttrib'], 'restype') ):
+ import ctypes
+ def new_glGetActiveAttrib(program, index):
+ # Prepare
+ bufsize = 32
+ length = ctypes.c_int()
+ size = ctypes.c_int()
+ type = ctypes.c_int()
+ name = ctypes.create_string_buffer(bufsize)
+ # Call
+ _GL.glGetActiveAttrib(program, index,
+ bufsize, ctypes.byref(length), ctypes.byref(size),
+ ctypes.byref(type), name)
+ # Return Python objects
+ #return name.value.decode('utf-8'), size.value, type.value
+ return name.value, size.value, type.value
+
+ # Patch
+ NS['glGetActiveAttrib'] = new_glGetActiveAttrib
+
+
+ # Monkey-patch pyopengl to fix a bug in glBufferSubData
+ import sys
+ if sys.version_info > (3,):
+ buffersubdatafunc = NS['glBufferSubData']
+ if hasattr(buffersubdatafunc, 'wrapperFunction'):
+ buffersubdatafunc = buffersubdatafunc.wrapperFunction
+ _m = sys.modules[buffersubdatafunc.__module__]
+ _m.long = int
+
+
+# Apply
+_inject()
+_fix()
+
+
+## Compatibility functions
+
+
+def glShaderSource_compat(handle, code):
+ """ This version of glShaderSource applies small modifications
+ to the given GLSL code in order to make it more compatible between
+ desktop and ES2.0 implementations. Specifically:
+ * It sets the #version pragma (if none is given already)
+ * It returns a (possibly empty) set of enums that should be enabled
+ (for automatically enabling point sprites)
+ """
+
+ # Make a string
+ if isinstance(code, (list, tuple)):
+ code = '\n'.join(code)
+
+ # Determine whether this is a vertex or fragment shader
+ code_ = '\n' + code
+ is_vertex = '\nattribute' in code_
+ is_fragment = not is_vertex
+
+ # Determine whether to write the #version pragma
+ write_version = True
+ for line in code.splitlines():
+ if line.startswith('#version'):
+ write_version = False
+ print('For compatibility accross different GL backends, ' +
+ 'avoid using the #version pragma.')
+ if write_version:
+ code = '#version 120\n#line 0\n' + code
+
+ # Do the call
+ glShaderSource(handle, [code])
+
+ # Determine whether to activate point sprites
+ enums = set()
+ if is_fragment and 'gl_PointCoord' in code:
+ enums.add( _GL_ENUM('GL_VERTEX_PROGRAM_POINT_SIZE', 34370) )
+ enums.add( _GL_ENUM('GL_POINT_SPRITE', 34913) )
+ return enums
diff --git a/vispy/gloo/gl/ext.py b/vispy/gloo/gl/ext.py
new file mode 100644
index 0000000..261d7d9
--- /dev/null
+++ b/vispy/gloo/gl/ext.py
@@ -0,0 +1,9 @@
+""" Namespace for functions and constants corresponding to
+OpenGL ES 2.0 extensions.
+"""
+
+from __future__ import print_function, division, absolute_import
+
+from ._constants_ext import *
+
+# Filled with functions when vispy.gloo.gl is imported
diff --git a/vispy/gloo/globject.py b/vispy/gloo/globject.py
new file mode 100644
index 0000000..beb17e2
--- /dev/null
+++ b/vispy/gloo/globject.py
@@ -0,0 +1,153 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Definition of the base class for all gloo objects.
+"""
+
+import vispy
+
+class GLObject(object):
+ """ Base class for classes that wrap an OpenGL object.
+ All GLObject's can be used as a context manager to enable them,
+ although some are better used by setting them as a uniform or
+ attribute of a Program.
+
+ All GLObject's apply deferred (a.k.a. lazy) loading, which means
+ that the objects can be created and data can be set even if no
+ OpenGL context is available yet.
+
+ There are a few exceptions, most notably when enabling an object
+ by using it as a context manager, and the delete method. In these
+ cases, the called should ensure that the proper OpenGL context is
+ current.
+ """
+
+ # Internal id counter to keep track of created objects
+ _idcount = 0
+
+ def __init__(self):
+
+ # The type of object (e.g. GL_TEXTURE_2D or GL_ARRAY_BUFFER)
+ # Used by some GLObjects internally
+ self._target = 0
+
+ # Name of this object on the GPU ( >0 means there is an OpenGL object)
+ # GLObjects should set this in _enable()
+ self._handle = 0
+
+ # Whether this object needs an update
+ # GLObjects can set this to True to receive a call to _update()
+ self._need_update = False
+
+ # Whether the object is in a state that it can be used
+ # Is set to True if _update() returns without errors
+ self._valid = False
+
+
+ # Error counters (only used here)
+ self._error_enter = 0 # Track error on __enter__
+ self._error_exit = 0 # track errors on __exit__
+
+ # Object internal id (for e.g. debugging)
+ GLObject._idcount += 1
+ self._id = GLObject._idcount
+
+
+ def __enter__(self):
+ """ Entering context """
+
+ try:
+ # Try to enable, reset error state on success
+ self.activate()
+ self._error_enter = 0
+ except Exception:
+ # Error: increase error state. If this is the first error, raise
+ self._error_enter += 1
+ if self._error_enter == 1:
+ raise
+ return self
+
+
+ def __exit__(self, type, value, traceback):
+ """ Leaving context """
+ returnval = None
+ if value is None:
+ # Reset error state on success
+ self._error_exit = 0
+ else:
+ # Error: increase error state. If not the first error, suppress
+ self._error_exit += 1
+ if self._error_enter or self._error_exit > 1:
+ returnval = True # Suppress error
+ self.deactivate()
+ return returnval
+
+
+ def __del__(self):
+ """ Delete the object from OpenGl memory. """
+ # You never know when this is goint to happen. The window might
+ # already be closed and no OpenGL context might be available.
+ # So we try, but suppress errors unless the user explicity asks them
+ try:
+ self.delete()
+ except Exception as err:
+ if vispy.config['show_warnings']:
+ print('Error deleting %r: %s' % (self, err))
+
+
+ def delete(self):
+ """ Delete the object from OpenGl memory. """
+
+ # Only delete object if it was created on GPU
+ if self._handle:
+ self._delete()
+ # Reset
+ self._handle = 0
+ self._valid = False
+
+
+ def activate(self):
+ """ Activate the object (a GL context must be available).
+ Note that the object can also be activated (and automatically
+ deactivated) by using it as a context manager.
+ """
+
+ # Ensure that the GPU equivalent of this object exists
+ if not self.handle:
+ try:
+ self._create()
+ except Exception:
+ raise RuntimeError('Could not create %r, perhaps there is no OpenGL context?' % self)
+ # Perform an update if necessary
+ if self._need_update:
+ self._update() # If it does not raise an error, assume valid
+ self._need_update = False
+ self._valid = True
+ # Activate
+ self._activate()
+
+
+ def deactivate(self):
+ """ Deactivate the object.
+ """
+
+ return self._deactivate()
+
+
+ @property
+ def handle(self):
+ """ Name of this object in GPU.
+ """
+
+ return self._handle
+
+
+ # Subclasses may need to overload methods below
+
+ def _create(self): pass
+ def _delete(self): pass
+ def _update(self): pass
+ def _activate(self): pass
+ def _deactivate(self): pass
+
diff --git a/vispy/gloo/program.py b/vispy/gloo/program.py
new file mode 100644
index 0000000..9e9c9f5
--- /dev/null
+++ b/vispy/gloo/program.py
@@ -0,0 +1,651 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Definition of shader program.
+
+This code is inspired by similar classes from Pygly.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import re
+import sys
+import weakref
+
+import numpy as np
+
+from . import gl
+from . import GLObject, ext_available, convert_to_enum
+from . import VertexBuffer, ElementBuffer
+from .buffer import ClientElementBuffer
+from .variable import Attribute, Uniform
+from .shader import VertexShader, FragmentShader
+from vispy.util import is_string
+
+
+
+class ProgramError(RuntimeError):
+ """ Raised when something goes wrong that depens on state that was set
+ earlier (due to deferred loading).
+ """
+ pass
+
+
+
+class Program(GLObject):
+ """ Representation of a shader program. It combines (links) a
+ vertex and a fragment shaders to compose a complete program.
+ On (normal, non-ES 2.0) implementations, multiple shaders of
+ each type are allowed).
+
+ Objects of this class are also used to set the uniforms and
+ attributes that are used by the shaders. To do so, simply add
+ attributes to the `uniforms` and `attributes` members. The names
+ of the added attributes should match with those used in the shaders.
+
+ Parameters
+ ----------
+ vert : Shader object or string
+ The VertexShader for this program. The string can be a file name
+ or the source of the shading code. It can also be a list of
+ shaders, but this is not supported on genuine OpenGL ES 2.0.
+ frag : Shader object or string
+ The FragmentShader for this program. The string can be a file name
+ or the source of the shading code. It can also be a list of
+ shaders, but this is not supported on genuine OpenGL ES 2.0.
+
+ """
+
+ def __init__(self, vert=None, frag=None):
+ GLObject.__init__(self)
+
+ # Manage enabled state (i.e. activated)
+ self._active = False
+ self._activated_objects = []
+
+ # List of varying names to use for feedback
+ self._feedback_vars = []
+
+ # Inis lists of shaders
+ self._verts = []
+ self._frags = []
+
+ # Containers for uniforms and attributes.
+ # name -> Variable
+ self._attributes = {}
+ self._uniforms = {}
+
+ # Keep track of which names are active (queried after linking)
+ # name -> location
+ self._active_attributes = {}
+ self._active_uniforms = {}
+
+ # Keep track of number of vertices
+ self._vertex_count = None
+
+ shaders = []
+
+ # Get all vertex shaders
+ if vert is None:
+ pass
+ elif isinstance(vert, VertexShader):
+ shaders.append(vert)
+ elif is_string(vert):
+ shaders.append(VertexShader(vert))
+ elif isinstance(vert, (list, tuple)):
+ for shader in vert:
+ if is_string(shader):
+ shader = VertexShader(shader)
+ shaders.append(shader)
+ else:
+ raise ValueError('Invalid value for VertexShader "%r"' % vert)
+
+ # Get all fragment shaders
+ if frag is None:
+ pass
+ elif isinstance(frag, FragmentShader):
+ shaders.append(frag)
+ elif is_string(frag):
+ shaders.append(FragmentShader(frag))
+ elif isinstance(frag, (list, tuple)):
+ for shader in frag:
+ if is_string(shader):
+ shader = FragmentShader(shader)
+ shaders.append(shader)
+ else:
+ raise ValueError('Invalid value for FragmentShader "%r"' % frag)
+
+ # Attach shaders now
+ if shaders:
+ self.attach(*shaders)
+
+
+ def __repr__(self):
+ return "<%s %d>" % (self.__class__.__name__, self._id)
+
+
+ def attach(self, *shaders):
+ """ Attach one or more vertex/fragment shaders to the program.
+
+ Paramaters
+ ----------
+ *shaders : Shader objects
+ The VertexShader or FragmentShader to attach.
+
+ """
+ # Tuple or list given?
+ if len(shaders)==1 and isinstance(shaders[0], (list,tuple)):
+ shaders = shaders[0]
+
+ # Process each shader
+ for shader in shaders:
+ if isinstance(shader, VertexShader):
+ self._verts.append(shader)
+ elif isinstance(shader, FragmentShader):
+ self._frags.append(shader)
+ else:
+ ValueError('Invalid value for shader "%r"' % shader)
+
+ # Ensure uniqueness of shaders
+ self._verts = list(set(self._verts))
+ self._frags = list(set(self._frags))
+
+ # Update dirty flag to induce a new build when necessary
+ self._need_update = True
+
+ # Build uniforms and attributes
+ self._build_uniforms()
+ self._build_attributes()
+
+
+ def detach(self, *shaders):
+ """ Detach one or several vertex/fragment shaders from the program.
+
+ Paramaters
+ ----------
+ *shaders : Shader objects
+ The VertexShader or FragmentShader to detach.
+
+ """
+ # Tuple or list given?
+ if len(shaders)==1 and isinstance(shaders[0], (list,tuple)):
+ shaders = shaders[0]
+
+ # Process each shader
+ for shader in shaders:
+ if isinstance(shader, VertexShader):
+ if shader in self._verts:
+ self._verts.remove(shader)
+ else:
+ raise ShaderException("Shader is not attached to the program")
+ elif isinstance(shader, FragmentShader):
+ if shader in self._frags:
+ self._frags.remove(shader)
+ else:
+ raise ShaderException("Shader is not attached to the program")
+ else:
+ ValueError('Invalid value for shader "%r"' % shader)
+
+ # Update dirty flag to induce a new build when necessary
+ self._need_update = True
+
+ # Build uniforms and attributes
+ self._build_uniforms()
+ self._build_attributes()
+
+
+ @property
+ def shaders(self):
+ """ List of shaders associated with this shading program.
+ """
+ return self._verts + self._frags
+
+
+ def __setitem__(self, name, data):
+ """ Behave a bit like a dict to assign attributes and uniforms.
+ This is the preferred way for the user to set uniforms and attributes.
+ """
+ if name in self._uniforms.keys():
+ # Set data and invalidate vertex count
+ self._uniforms[name].set_data(data)
+ self._vertex_count = None
+ elif name in self._attributes.keys():
+ # Set data
+ self._attributes[name].set_data(data)
+ else:
+ raise NameError("Unknown uniform or attribute: %s" % name)
+
+
+ def set_vars(self, vars=None, **keyword_vars):
+ """ Set variables from a dict-like object. vars can be a dict
+ or a structured numpy array. This is a convenience function
+ that is more or less equivalent to:
+ ``for name in vars: program[name] = vars[name]``
+
+ """
+ D = {}
+
+ # Process kwargs
+ D.update(keyword_vars)
+
+ # Process vars
+ if vars is None:
+ pass
+ elif isinstance(vars, np.ndarray):
+ # Structured array
+ if vars.dtype.fields:
+ print("Warning: attribute data given as a structured " +
+ "array, you probably want to use a VertexBuffer.")
+ for k in vars.dtype.fields:
+ D[k] = vars[k]
+ else:
+ raise ValueError("Program.set_attr accepts a structured " +
+ "array, but normal arrays must be given as keyword args.")
+
+ elif isinstance(vars, VertexBuffer):
+ # Vertex buffer
+ if vars.dtype.names:
+ for k in vars.dtype.names:
+ if k not in self._attributes.keys():
+ print('Dropping "%s" item; '
+ 'it is not a known attribute.' % k)
+ else:
+ D[k] = vars[k]
+ else:
+ raise ValueError('Can only set attributes with a ' +
+ 'structured VertexBuffer.')
+
+ elif isinstance(vars, dict):
+ # Dict
+ for k in vars:
+ if not (k in self._attributes.keys() or
+ k in self._uniforms.keys() ):
+ print('Dropping "%s" item; '
+ 'it is not a known attribute/uniform.' % k)
+ else:
+ D[k] = vars[k]
+ else:
+ raise ValueError("Don't know how to use attribute of type %r" %
+ type(vars))
+
+ # Apply each
+ for name, data in D.items():
+ self[name] = data
+
+
+ @property
+ def attributes(self):
+ """ A list of all Attribute objects associated with this program
+ (sorted by name).
+ """
+ return list( sorted(self._attributes.values(), key=lambda x:x.name ) )
+
+
+ @property
+ def uniforms(self):
+ """ A list of all Uniform objects associated with this program
+ (sorted by name).
+ """
+ return list( sorted(self._uniforms.values(), key=lambda x:x.name ) )
+
+
+ def _get_vertex_count(self):
+ """ Get count of the number of vertices.
+ The count will only be recalculated if necessary, so if the
+ attributes have not changed, this function call should be quick.
+ """
+ if self._vertex_count is None:
+ count = None
+ for attribute in self.attributes:
+ # Check if valid count
+ if attribute.count is None:
+ continue
+ # Update count
+ if count is None:
+ count = attribute.count
+ else:
+ #if count != attribute.count:
+ # print('Warning: attributes have unequal number of vertices.')
+ count = min(count, attribute.count)
+ self._vertex_count = count
+
+ # Return
+ return self._vertex_count
+
+
+ def _build_attributes(self):
+ """ Build the attribute objects.
+ Called when shader is atatched/detached.
+ """
+ # Get all attributes (There are no attribute in fragment shaders)
+ v_attributes, f_attributes = [], []
+ for shader in self._verts:
+ v_attributes.extend(shader._get_attributes())
+ attributes = list(set(v_attributes + f_attributes))
+
+ # Create Attribute objects for each one
+ self._attributes = {}
+ for (name, gtype) in attributes:
+ attribute = Attribute(name, gtype)
+ self._attributes[name] = attribute
+
+
+ def _build_uniforms(self):
+ """ Build the uniform objects.
+ Called when shader is atatched/detached.
+ """
+ # Get al; uniformes
+ v_uniforms, f_uniforms = [], []
+ for shader in self._verts:
+ v_uniforms.extend(shader._get_uniforms())
+ for shader in self._frags:
+ f_uniforms.extend(shader._get_uniforms())
+ uniforms = list(set(v_uniforms + f_uniforms))
+
+ # Create Uniform ojects for each one
+ self._uniforms = {}
+ for (name, gtype) in uniforms:
+ uniform = Uniform(name, gtype)
+ self._uniforms[name] = uniform
+
+
+ def _mark_active_attributes(self):
+ """ Mark which attributes are active and set the location.
+ Called after linking.
+ """
+
+ count = gl.glGetProgramiv(self.handle, gl.GL_ACTIVE_ATTRIBUTES)
+
+ # This match a name of the form "name[size]" (= array)
+ regex = re.compile("""(?P<name>\w+)\s*(\[(?P<size>\d+)\])""")
+
+ # Find active attributes
+ self._active_attributes = {}
+ for i in range(count):
+ name, size, gtype = gl.glGetActiveAttrib(self.handle, i)
+ loc = gl.glGetAttribLocation(self._handle, name)
+ name = name.decode('utf-8')
+ # This checks if the attribute is an array
+ # Name will be something like xxx[0] instead of xxx
+ m = regex.match(name)
+ # When attribute is an array, size corresponds to the highest used index
+ if m:
+ name = m.group('name')
+ if size >= 1:
+ for i in range(size):
+ name = '%s[%d]' % (m.group('name'),i)
+ self._active_attributes[name] = loc
+ else:
+ self._active_attributes[name] = loc
+
+ # Mark these as active (loc non-None means active)
+ for attribute in self._attributes.values():
+ attribute._loc = self._active_attributes.get(attribute.name, None)
+
+
+ def _mark_active_uniforms(self):
+ """ Mark which uniforms are actve and set the location,
+ for textures also set texture unit.
+ Called after linking.
+ """
+
+ count = gl.glGetProgramiv(self.handle, gl.GL_ACTIVE_UNIFORMS)
+
+ # This match a name of the form "name[size]" (= array)
+ regex = re.compile("""(?P<name>\w+)\s*(\[(?P<size>\d+)\])\s*""")
+
+ # Find active uniforms
+ self._active_uniforms = {}
+ for i in range(count):
+ name, size, gtype = gl.glGetActiveUniform(self.handle, i)
+ loc = gl.glGetUniformLocation(self._handle, name)
+ name = name.decode('utf-8')
+ # This checks if the uniform is an array
+ # Name will be something like xxx[0] instead of xxx
+ m = regex.match(name)
+ # When uniform is an array, size corresponds to the highest used index
+ if m:
+ name = m.group('name')
+ if size >= 1:
+ for i in range(size):
+ name = '%s[%d]' % (m.group('name'),i)
+ self._active_uniforms[name] = loc
+ else:
+ self._active_uniforms[name] = loc
+
+ # Mark these as active (loc non-None means active)
+ texture_count = 0
+ for uniform in self._uniforms.values():
+ uniform._loc = self._active_uniforms.get(uniform.name, None)
+ if uniform._loc is not None:
+ if uniform._textureClass:
+ uniform._texture_unit = texture_count
+ texture_count += 1
+
+
+
+ ## Behaver like a GLObject
+
+ def _create(self):
+ self._handle = gl.glCreateProgram()
+
+
+ def _delete(self):
+ gl.glDeleteProgram(self._handle)
+
+
+ def _activate(self):
+ """
+ * Activate ourselves
+ * Prepare for activating other objects.
+ * Upload pending variables.
+ """
+ # Use this program!
+ gl.glUseProgram(self._handle)
+
+ # Mark as enabled, prepare to enable other objects
+ self._active = True
+ self._activated_objects = []
+
+ # Check if one of our shaders nees an updata.
+ # If so, we force ourselve to update, which will re-attach
+ # and activate all shaders.
+ shaders_need_update = False
+ for shader in self.shaders:
+ shaders_need_update = shaders_need_update or shader._need_update
+
+ # Update?
+ if shaders_need_update:
+ self._need_update = True
+ # Recursive, but beware to deactivate first, or we get
+ # "stuck" in a false activated state
+ self._deactivate()
+ self.activate()
+
+
+ def _deactivate(self):
+ """ Deactivate any objects that were activated on our behalf,
+ and then deactivate ourself.
+ """
+ self._active = False
+ for ob in reversed(self._activated_objects):
+ ob.deactivate()
+ self._activated_objects = []
+ gl.glUseProgram(0)
+
+
+ def _update(self):
+ """ Called when the object is activated and the _need_update
+ flag is set
+ """
+ # Check if we have something to link
+ if not self._verts:
+ raise ProgramError("No vertex shader has been given")
+ if not self._frags:
+ raise ProgramError("No fragment shader has been given")
+
+ # Detach any attached shaders
+ attached = gl.glGetAttachedShaders(self._handle)
+ for handle in attached:
+ gl.glDetachShader(self._handle, handle)
+
+ # Attach and activate vertex and fragment shaders
+ for shader in self.shaders:
+ shader.activate()
+ gl.glAttachShader(self._handle, shader.handle)
+
+ # Only proceed if all shaders compiled ok
+ oks = [shader._valid for shader in self.shaders]
+ if not (oks and all(oks)):
+ raise ProgramError('Shaders did not compile.')
+
+ # Link the program
+ # todo: should there be a try-except around this?
+ gl.glLinkProgram(self._handle)
+ if not gl.glGetProgramiv(self._handle, gl.GL_LINK_STATUS):
+ errors = gl.glGetProgramInfoLog(self._handle)
+ errormsg = self._get_error(errors, 4)
+ #parse_shader_errors(errors)
+ raise ProgramError('Error linking %r:\n'%self + errormsg)
+
+ # Mark all active attributes and uniforms
+ self._mark_active_attributes()
+ self._mark_active_uniforms()
+
+ # Invalidate all uniforms and attributes
+ for var in self._uniforms.values():
+ var.invalidate()
+ for var in self._attributes.values():
+ var.invalidate()
+
+
+ def _get_error(self, errors, indentation=0):
+ """ Get linking error in a somewhat nicer format.
+ """
+ # Init
+ if not is_string(errors):
+ errors = errors.decode('utf-8', 'replace')
+ # Parse lines
+ results = [line for line in errors.splitlines() if line]
+ # Add indentation and return
+ results = [' '*indentation + r for r in results]
+ return '\n'.join(results)
+
+
+ ## Drawing and enabling
+
+
+ def activate_object(self, object):
+ """ Activate an object, e.g. a texture. The program
+ will make sure that the object is disabled again.
+ Can only be called while Program is active.
+ """
+ if not self._active:
+ raise ProgramError("Program cannot enable an object if not self being enabled.")
+ object.activate()
+ self._activated_objects.append(object)
+
+
+
+ def draw(self, mode, subset=None):
+ """ Draw the vertices in the specified mode.
+
+ If the program is not active, it is activated to do the
+ drawing and then deactivated.
+
+ Parameters
+ ----------
+ mode : str
+ POINTS, LINES, LINE_STRIP, LINE_LOOP, TRIANGLES, TRIANGLE_STRIP,
+ TRIANGLE_FAN. Case insensitive. Alternatively, the real GL enum
+ can also be given.
+ subset : {ElementBuffer, tuple}
+ The subset of vertices to draw. This can be an ElementBuffer
+ that specifies the indices of the vertices to draw, or a
+ tuple that specifies the slice: (start, end). The second
+ element in this tuple can be None to specify the maximum
+ length. If the subset is not given or None, all vertices
+ are drawn.
+ """
+
+ # Check if active. If not, call recursively, but activated
+ if not self._active:
+ with self:
+ if self._error_enter:
+ return # Do not draw if activation went wrong!
+ return self.draw(mode, subset)
+
+ # Check mode
+ mode = convert_to_enum(mode)
+ if mode not in [gl.GL_POINTS, gl.GL_LINES, gl.GL_LINE_STRIP,
+ gl.GL_LINE_LOOP, gl.GL_TRIANGLES, gl.GL_TRIANGLE_STRIP,
+ gl.GL_TRIANGLE_FAN]:
+ raise ValueError('Given mode is invalid: %r.' % mode)
+
+ # Allow subset None
+ if subset is None:
+ subset = (0, None)
+
+ # Upload any attributes and uniforms if necessary
+ for variable in (self.attributes + self.uniforms):
+ if variable.active:
+ variable.upload(self)
+
+ # Enable any other stuff
+ need_enabled = set()
+ for shader in self._verts + self._frags:
+ need_enabled.update(shader._need_enabled)
+ for enum in need_enabled:
+ gl.glEnable(enum)
+
+ if isinstance(subset, ElementBuffer):
+ # Draw elements
+
+ # Prepare pointer or offset
+ if isinstance(subset, ClientElementBuffer):
+ ptr = subset.data
+ else:
+ ptr = None # Note that this can also be a ctypes.pointer offset
+
+ # Activate
+ self.activate_object(subset)
+ # Prepare
+ gltype = ElementBuffer.DTYPE2GTYPE[subset.dtype.name]
+ if gltype == gl.GL_UNSIGNED_INT and not ext_available('element_index_uint'):
+ raise ValueError('element_index_uint extension needed for uint32 ElementBuffer.')
+ # Draw
+ gl.glDrawElements(mode, subset.count, gltype, ptr)
+
+
+ elif isinstance(subset, tuple):
+ # Draw arrays
+
+ # Check tuple
+ ok = [isinstance(i, (int, type(None))) for i in subset]
+ if len(subset) != 2 or not all(ok):
+ raise ValueError('Subset must be a two-element tuple with '
+ 'interegers or None.')
+ # Get start, end, refcount
+ start, end = subset
+ start = start or 0
+ refcount = self._get_vertex_count()
+ # Determine count
+ if end is None:
+ count = refcount
+ if count is None:
+ raise ProgramError("Could not determine element count for draw.")
+ else:
+ count = end - start
+ if refcount and count > refcount:
+ raise ValueError('Count is larger than known number of vertices.')
+ # Draw
+ gl.glDrawArrays(mode, start, count)
+
+ else:
+ raise ValueError('Given subset is of invalid type: %r.' % type(subset))
+
+ # Clean up
+ for enum in need_enabled:
+ gl.glDisable(enum)
diff --git a/vispy/gloo/shader.py b/vispy/gloo/shader.py
new file mode 100644
index 0000000..8750761
--- /dev/null
+++ b/vispy/gloo/shader.py
@@ -0,0 +1,343 @@
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------------
+# Copyright (c) 2013, Vispy Development Team. All rights reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+# -----------------------------------------------------------------------------
+"""
+VertexShader and FragmentShader classes.
+
+These classes are almost never created explicitly but are created implicitly
+from within a Program object.
+
+Example
+-------
+
+ vert = "some code"
+ frag = "some code"
+
+ program = Program(vert,frag)
+"""
+from __future__ import print_function, division
+
+import re
+import os
+import numpy as np
+
+from vispy.util import is_string
+from . import gl
+from . import GLObject
+
+
+
+# ------------------------------------------------------- class ShaderError ---
+class ShaderError(RuntimeError):
+ """ Shader error class """
+ pass
+
+
+
+
+
+# ------------------------------------------------------------ class Shader ---
+class Shader(GLObject):
+ """ Abstract shader class.
+ """
+
+ # Conversion of known uniform and attribute types to GL constants
+ _gtypes = {
+ 'float': gl.GL_FLOAT,
+ 'vec2': gl.GL_FLOAT_VEC2,
+ 'vec3': gl.GL_FLOAT_VEC3,
+ 'vec4': gl.GL_FLOAT_VEC4,
+ 'int': gl.GL_INT,
+ 'ivec2': gl.GL_INT_VEC2,
+ 'ivec3': gl.GL_INT_VEC3,
+ 'ivec4': gl.GL_INT_VEC4,
+ 'bool': gl.GL_BOOL,
+ 'bvec2': gl.GL_BOOL_VEC2,
+ 'bvec3': gl.GL_BOOL_VEC3,
+ 'bvec4': gl.GL_BOOL_VEC4,
+ 'mat2': gl.GL_FLOAT_MAT2,
+ 'mat3': gl.GL_FLOAT_MAT3,
+ 'mat4': gl.GL_FLOAT_MAT4,
+ 'sampler2D': gl.GL_SAMPLER_2D,
+ 'sampler3D': gl.ext.GL_SAMPLER_3D,
+ 'samplerCube': gl.GL_SAMPLER_CUBE }
+
+
+ def __init__(self, target, code=None):
+ """
+ Create the shader and store code.
+ """
+
+ GLObject.__init__(self)
+
+ # Check and store target
+ if target not in [gl.GL_VERTEX_SHADER, gl.GL_FRAGMENT_SHADER]:
+ raise ValueError('Target must be vertex or fragment shader.')
+ self._target = target
+
+ # For auto-enabling point sprites
+ self._need_enabled = set()
+
+ # Set code
+ self._code = None
+ self._source = None
+ if code is not None:
+ self.set_code(code)
+
+
+ def __repr__(self):
+ return "<%s %d (%s)>" % (self.__class__.__name__, self._id, self._source)
+
+
+ def set_code(self, code, source=None):
+ """ Set the code for this shader.
+
+ Parameters
+ ----------
+ code : str
+ The GLSL source code, or a filename that contains the code.
+ source : str
+ A specifier where the code came from. If not given,
+ "<string>" is used, or the filename where the code is loaded
+ from. Optional.
+ """
+
+ if not is_string(code):
+ raise TypeError('Code must be a string (%s)' % type(code))
+
+ # Set code and source
+ if os.path.isfile(code):
+ with open(code, 'rb') as file:
+ self._code = file.read().decode('utf-8')
+ self._source = os.path.basename(code)
+ else:
+ self._code = code
+ self._source = '<string>'
+
+ # Set given source?
+ if source is not None:
+ if not is_string(source):
+ raise TypeError('Source must be a string (%s)' % type(source))
+ self._source = source
+
+ # Set flags
+ self._need_update = True
+
+
+ @property
+ def code(self):
+ """ The GLSL code of this shader.
+ """
+ return self._code
+
+
+ @property
+ def source(self):
+ """ The source of the code for this shader
+ (as in where it came from, not the source code).
+ """
+ return self._source
+
+
+ def _get_attributes(self):
+ """
+ Extract attributes (name and type) from code.
+ """
+
+ attributes = []
+ regex = re.compile("""\s*attribute\s+(?P<type>\w+)\s+"""
+ """(?P<name>\w+)\s*(\[(?P<size>\d+)\])?\s*;""")
+ for m in re.finditer(regex,self._code):
+ size = -1
+ gtype = Shader._gtypes[m.group('type')]
+ if m.group('size'):
+ size = int(m.group('size'))
+ if size >= 1:
+ for i in range(size):
+ name = '%s[%d]' % (m.group('name'),i)
+ attributess.append((name, gtype))
+ else:
+ attributes.append((m.group('name'), gtype))
+
+ return attributes
+
+
+ def _get_uniforms(self):
+ """
+ Extract uniforms (name and type) from code.
+ """
+
+ uniforms = []
+ regex = re.compile("""\s*uniform\s+(?P<type>\w+)\s+"""
+ """(?P<name>\w+)\s*(\[(?P<size>\d+)\])?\s*;""")
+ for m in re.finditer(regex,self._code):
+ size = -1
+ gtype = Shader._gtypes[m.group('type')]
+ if m.group('size'):
+ size = int(m.group('size'))
+ if size >= 1:
+ for i in range(size):
+ name = '%s[%d]' % (m.group('name'),i)
+ uniforms.append((name, gtype))
+ else:
+ uniforms.append((m.group('name'), gtype))
+
+ return uniforms
+
+
+ def _create(self):
+ """
+ Create the shader.
+ """
+ self._handle = gl.glCreateShader(self._target)
+
+
+ def _delete(self):
+ """
+ Delete the shader.
+ """
+
+ gl.glDeleteShader(self._handle)
+
+
+ def _update(self):
+ """
+ Compile the shader.
+ """
+
+ # Check if we have source code
+ if not self._code:
+ raise ShaderError('No source code given for shader.')
+
+ # Set source
+ # Note, some implementations cannot deal with a sequence of chars
+ #gl.glShaderSource(self._handle, self._code)
+ #gl.glShaderSource(self._handle, [self._code])
+
+ # More compativle variant (also deals with above chars problem)
+ self._need_enabled = gl.glShaderSource_compat(self._handle, self._code)
+
+ # Compile the shader
+ # todo: can this raise exception?
+ gl.glCompileShader(self._handle)
+
+ # Check the compile status
+ status = gl.glGetShaderiv(self._handle, gl.GL_COMPILE_STATUS)
+ if not status:
+ errors = gl.glGetShaderInfoLog(self._handle)
+ errormsg = self._get_error(errors, 4)
+ raise ShaderError("Error compiling %r:\n"%self + errormsg)
+
+
+ def _parse_error(self, error):
+ """
+ Parses a single GLSL error and extracts the line number and error
+ description.
+
+ Parameters
+ ----------
+ error : str
+ An error string as returned byt the compilation process
+ """
+
+ # Nvidia
+ # 0(7): error C1008: undefined variable "MV"
+ match = re.match( r'(\d+)\((\d+)\)\s*:\s(.*)', error )
+ if match:
+ return int(match.group(2)), match.group(3)
+
+ # ATI / Intel
+ # ERROR: 0:131: '{' : syntax error parse error
+ match = re.match( r'ERROR:\s(\d+):(\d+):\s(.*)', error )
+ if match:
+ return int(match.group(2)), match.group( 3 )
+
+ # Nouveau
+ # 0:28(16): error: syntax error, unexpected ')', expecting '('
+ match = re.match( r'(\d+):(\d+)\((\d+)\):\s(.*)', error )
+ if match:
+ return int(match.group(2)), match.group(4)
+
+ # Other ...
+ return None, error
+
+
+ def _get_error(self, errors, indentation=0):
+ """
+ Get error and show the faulty line + some context
+
+ Parameters
+ ----------
+ error : str
+ An error string as returned byt the compilation process
+
+ lineno: int
+ Line where error occurs
+ """
+
+ # Init
+ if not is_string(errors):
+ errors = errors.decode('utf-8', 'replace')
+ results = []
+ lines = None
+ if self._code:
+ lines = [line.strip() for line in self._code.split('\n')]
+
+ for error in errors.split('\n'):
+ # Strip; skip empy lines
+ error = error.strip()
+ if not error:
+ continue
+ # Separate line number from description (if we can)
+ linenr, error = self._parse_error(error)
+ if None in (linenr, lines):
+ results.append('%s' % error)
+ else:
+ results.append('on line %i: %s' % (linenr, error))
+ if linenr>0 and linenr < len(lines):
+ results.append(' %s' % lines[linenr-1])
+
+ # Add indentation and return
+ results = [' '*indentation + r for r in results]
+ return '\n'.join(results)
+
+
+# ------------------------------------------------------ class VertexShader ---
+class VertexShader(Shader):
+ """ Vertex shader class. Inherits :class:`shader.Shader`.
+
+ Parameters
+ ----------
+ code : str
+ The GLSL source code, or a filename that contains the code.
+
+ """
+
+ def __init__(self, code=None):
+ """
+ Create the shader.
+ """
+
+ Shader.__init__(self, gl.GL_VERTEX_SHADER, code)
+
+
+
+# ---------------------------------------------------- class FragmentShader ---
+class FragmentShader(Shader):
+ """ Fragment shader class. Inherits :class:`shader.Shader`.
+
+ Parameters
+ ----------
+ code : str
+ The GLSL source code, or a filename that contains the code.
+
+ """
+
+ def __init__(self, code=None):
+ """
+ Create the shader.
+ """
+
+ Shader.__init__(self, gl.GL_FRAGMENT_SHADER, code)
diff --git a/vispy/gloo/tests/test_buffer.py b/vispy/gloo/tests/test_buffer.py
new file mode 100644
index 0000000..f940c7e
--- /dev/null
+++ b/vispy/gloo/tests/test_buffer.py
@@ -0,0 +1,410 @@
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team
+# All rights reserved.
+# -----------------------------------------------------------------------------
+import unittest
+import numpy as np
+from vispy.gloo import gl
+
+from vispy.gloo.buffer import Buffer
+from vispy.gloo.buffer import VertexBuffer, ClientVertexBuffer
+from vispy.gloo.buffer import ElementBuffer, ClientElementBuffer
+
+
+
+# -----------------------------------------------------------------------------
+class BufferTest(unittest.TestCase):
+
+ def test_init(self):
+ buffer = Buffer(target=gl.GL_ARRAY_BUFFER)
+ assert buffer._handle == 0
+ assert buffer._need_update == False
+ assert buffer._valid == False
+ assert buffer._nbytes == 0
+ assert buffer._usage == gl.GL_DYNAMIC_DRAW
+
+
+ def test_pending_data(self):
+ data = np.zeros(100, np.float32)
+
+ buffer = Buffer(target=gl.GL_ARRAY_BUFFER)
+ self.assertEqual(len(buffer._pending_data), 0)
+
+ buffer = Buffer(data=data, target=gl.GL_ARRAY_BUFFER)
+ self.assertEqual(len(buffer._pending_data), 1)
+
+ buffer.set_data(data)
+ self.assertEqual(len(buffer._pending_data), 1)
+
+ buffer.set_subdata(0, data[:50])
+ self.assertEqual(len(buffer._pending_data), 2)
+
+ buffer.set_data(data)
+ self.assertEqual(len(buffer._pending_data), 1)
+
+
+ def test_setting_size(self):
+ data = np.zeros(100, np.float32)
+ buffer = Buffer(target=gl.GL_ARRAY_BUFFER)
+
+ buffer.set_data(data)
+ self.assertEqual(buffer.nbytes, data.nbytes)
+
+ buffer.set_data( np.zeros(200, np.float32))
+ self.assertEqual(buffer.nbytes, 200*4)
+
+ buffer.set_nbytes(10)
+ self.assertEqual(buffer.nbytes, 10)
+
+ buffer.set_nbytes(20)
+ self.assertEqual(buffer.nbytes, 20)
+
+
+ def test_setting_subdata(self):
+
+ data = np.zeros(100, np.float32)
+ buffer = Buffer(target=gl.GL_ARRAY_BUFFER)
+
+ # Set subdata when no data is set
+ with self.assertRaises(RuntimeError):
+ buffer.set_subdata(0, data)
+
+ # Set nbytes and try again
+ buffer.set_nbytes(data.nbytes)
+ buffer.set_subdata(0, data)
+
+ # Subpart
+ buffer.set_subdata(0, data[:50])
+ buffer.set_subdata(50, data[50:])
+
+ # Too big
+ with self.assertRaises(ValueError):
+ buffer.set_subdata(1, data)
+
+ # Weird
+ with self.assertRaises(ValueError):
+ buffer.set_subdata(-1, data)
+
+ # Weirder
+ with self.assertRaises(ValueError):
+ buffer.set_subdata(1000000, data)
+
+
+ def test_wrong_data(self):
+ buffer = Buffer(target=gl.GL_ARRAY_BUFFER)
+
+ # String
+ with self.assertRaises(ValueError):
+ buffer.set_data('foo')
+
+ # Bytes
+ some_bytes = 'foo'.encode('utf-8')
+ with self.assertRaises(ValueError):
+ buffer.set_data(some_bytes)
+
+ # Now with subdata
+ data = np.zeros(100, np.float32)
+ buffer.set_data(data)
+
+
+ # String
+ with self.assertRaises(ValueError):
+ buffer.set_subdata(0, 'foo')
+ with self.assertRaises(ValueError):
+ buffer.set_subdata('foo', data)
+
+ # Bytes
+ some_bytes = 'foo'.encode('utf-8')
+ with self.assertRaises(ValueError):
+ buffer.set_subdata(0, some_bytes)
+ with self.assertRaises(ValueError):
+ buffer.set_subdata(some_bytes, data)
+
+
+
+# -----------------------------------------------------------------------------
+class VertexBufferTest(unittest.TestCase):
+
+ def test_init(self):
+ data = np.zeros(100, np.float32)
+ buffer = VertexBuffer(data=data)
+ assert buffer.count == 100
+ assert buffer.vsize == 1
+ assert buffer.dtype == np.float32
+
+
+ def test_init_with_data(self):
+
+ for dtype in (np.float32, np.uint8, np.int16):
+
+ data = np.zeros(100, dtype)
+ buffer = VertexBuffer(data)
+ assert buffer.count == 100
+ assert buffer.vsize == 1
+ assert buffer.dtype == dtype
+
+ data = np.zeros((100, 1), dtype)
+ buffer = VertexBuffer(data)
+ assert buffer.count == 100
+ assert buffer.vsize == 1
+ assert buffer.dtype == dtype
+
+ data = np.zeros((100,4), dtype)
+ buffer = VertexBuffer(data)
+ assert buffer.count == 100
+ assert buffer.vsize == 4
+ assert buffer.dtype == dtype
+
+
+ def test_init_with_structured_data(self):
+
+ # Singular 1
+ data = np.zeros(100, [('a', np.float32, 1)])
+ buffer = VertexBuffer(data)
+ assert buffer.count == 100
+ assert buffer.vsize == 1
+ assert buffer.dtype == np.float32
+
+ # Singular 2
+ data = np.zeros(100, [('a', np.float32, 4)])
+ buffer = VertexBuffer(data)
+ assert buffer.count == 100
+ assert buffer.vsize == 4
+ assert buffer.dtype == np.float32
+
+
+ # Multple
+ data = np.zeros(100, [ ('a', np.float32, 1),
+ ('b', np.uint8, 2),
+ ('c', np.int16, 3) ] )
+ buffer = VertexBuffer(data)
+
+ assert buffer.vsize == 1
+ assert buffer.dtype == data.dtype
+
+ assert buffer['a'].vsize == 1
+ assert buffer['a'].dtype == np.float32
+
+ assert buffer['b'].vsize == 2
+ assert buffer['b'].dtype == np.uint8
+
+ assert buffer['c'].vsize == 3
+ assert buffer['c'].dtype == np.int16
+
+
+ def test_init_with_dtype(self):
+
+ # Single element, this is simply unraveled
+ dtype = np.dtype([('a',np.float32,4)])
+ buffer = VertexBuffer(dtype)
+ assert buffer.count == 0
+ assert buffer.vsize == 4
+ assert buffer.dtype == np.float32
+
+ # Short notation specific to VertexBuffer
+ buffer = VertexBuffer(('a',np.float32,4))
+ assert buffer.vsize == 4
+ assert buffer.dtype == np.float32
+
+ # Plain dtype descriptor
+ buffer = VertexBuffer(np.float32)
+ assert buffer.vsize == 1
+ assert buffer.dtype == np.float32
+
+ # String dtype descirptor
+ buffer = VertexBuffer('float32')
+ assert buffer.vsize == 1
+ assert buffer.dtype == np.float32
+
+ # Multiple elements
+ dtype = dtype=[('a',np.float32,4), ('b',np.uint8,2)]
+ buffer = VertexBuffer(dtype)
+ assert buffer.count == 0
+ assert buffer.vsize == 1
+ assert buffer.dtype == np.dtype(dtype)
+ #
+ subbuffer = buffer['a']
+ assert subbuffer.count == 0
+ assert subbuffer.vsize == 4
+ assert subbuffer.dtype == np.float32
+ #
+ subbuffer = buffer['b']
+ assert subbuffer.count == 0
+ assert subbuffer.vsize == 2
+ assert subbuffer.dtype == np.uint8
+
+
+ def test_resize(self):
+
+ # Resize allowed with set_data (and offset=0)
+ V = VertexBuffer(np.float32)
+ V.set_data(np.ones(200, np.float32))
+ assert V.count == 200
+
+ V.set_data(np.ones(300, np.float32))
+ assert V.count == 300
+
+ # Resize not allowed with set_subdata
+ with self.assertRaises(ValueError):
+ V.set_subdata(0, np.ones(400, np.float32))
+
+
+ def test_offset(self):
+ dtype = np.dtype( [ ('position', np.float32, 3),
+ ('texcoord', np.float32, 2),
+ ('color', np.float32, 4) ] )
+ data = np.zeros(100, dtype=dtype)
+ buffer = VertexBuffer(data)
+
+ assert buffer['position'].offset == 0
+ assert buffer['texcoord'].offset == 3*np.dtype(np.float32).itemsize
+ assert buffer['color'].offset == (3+2)*np.dtype(np.float32).itemsize
+
+
+ def test_stride(self):
+ dtype = np.dtype( [ ('position', np.float32, 3),
+ ('texcoord', np.float32, 2),
+ ('color', np.float32, 4) ] )
+ data = np.zeros(100, dtype=dtype)
+ buffer = VertexBuffer(data)
+
+ assert buffer['position'].stride == 9*np.dtype(np.float32).itemsize
+ assert buffer['texcoord'].stride == 9*np.dtype(np.float32).itemsize
+ assert buffer['color'].stride == 9*np.dtype(np.float32).itemsize
+
+
+ buffer = VertexBuffer(data['position'])
+ assert buffer.offset == 0
+ assert buffer.stride == 3*np.dtype(np.float32).itemsize
+
+
+ def test_setitem(self):
+ dtype = np.dtype( [ ('position', np.float32, 3),
+ ('texcoord', np.float32, 2),
+ ('color', np.float32, 4) ] )
+ data = np.zeros(100, dtype=dtype)
+ buffer = VertexBuffer(data)
+
+ with self.assertRaises(ValueError):
+ buffer['color'] = data['color']
+
+ buffer[...] = data
+ assert len(buffer._pending_data) == 2
+
+ buffer[10:20] = data[10:20]
+ assert len(buffer._pending_data) == 3
+
+ # Discart all pending data
+ buffer.set_data(data)
+ assert len(buffer._pending_data) == 1
+
+ with self.assertRaises(ValueError):
+ buffer[10:20] = data[10:19]
+
+ with self.assertRaises(ValueError):
+ buffer[10:20] = data[10:21]
+
+
+ def test_set_data_on_view(self):
+
+ dtype = np.dtype( [ ('a', np.float32, 3),
+ ('b', np.float32, 2),
+ ('c', np.float32, 4) ] )
+ data = np.zeros(100, dtype=dtype)
+ buffer = VertexBuffer(data)
+
+ with self.assertRaises(RuntimeError):
+ buffer['a'].set_count(100)
+
+ with self.assertRaises(RuntimeError):
+ buffer['a'].set_data(data['a'])
+
+ with self.assertRaises(RuntimeError):
+ buffer['a'].set_subdata(data['a'])
+
+
+ def test_client_buffer(self):
+ data = np.zeros((100, 3), dtype=np.float32)
+ buffer = ClientVertexBuffer(data)
+ self.assertIs(buffer.data, data)
+
+ with self.assertRaises(RuntimeError):
+ buffer.set_data(data)
+ with self.assertRaises(RuntimeError):
+ buffer.set_subdata(data)
+
+
+ def test_typechecking(self):
+
+ # VertexBuffer supports these
+ for dtype in (np.uint8, np.int8, np.uint16, np.int16,
+ np.float32, np.float16):
+ buffer = VertexBuffer(dtype)
+
+ # VertexBuffer does *not* support these
+ float128 = getattr(np, 'float128', np.float64) # may not exist
+ for dtype in (np.uint32, np.int32, np.float64, float128):
+ with self.assertRaises(TypeError):
+ buffer = VertexBuffer(dtype)
+
+
+# -----------------------------------------------------------------------------
+class ElementBufferTest(unittest.TestCase):
+
+ def test_init(self):
+ data = np.zeros(100, np.uint32)
+ buffer = ElementBuffer(data=data)
+ assert buffer.count == 100
+ assert buffer.dtype == np.uint32
+
+
+ def test_shape_agnostic(self):
+
+ data = np.zeros(100, np.uint32)
+ buffer = ElementBuffer(data=data)
+ assert buffer.count == data.size
+ assert buffer.vsize == 1
+
+ data.shape = 50, 2
+ buffer = ElementBuffer(data=data)
+ assert buffer.count == data.size
+ assert buffer.vsize == 1
+
+ data.shape = 10, 5, 2
+ buffer = ElementBuffer(data=data)
+ assert buffer.count == data.size
+ assert buffer.vsize == 1
+
+
+ def test_typechecking(self):
+
+ # Elementbuffer does support for structured arrays
+ data = np.zeros(100, [('index', np.uint32,1)])
+ with self.assertRaises(ValueError):
+ buffer = ElementBuffer(data=data)
+
+ # ElementBuffer supports these
+ for dtype in (np.uint8, np.uint16, np.uint32):
+ buffer = ElementBuffer(dtype)
+
+ # ElementBuffer does *not* support these
+ for dtype in (np.int8, np.int16, np.int32, np.float32, np.float64):
+ with self.assertRaises(TypeError):
+ buffer = ElementBuffer(dtype)
+
+
+
+ def test_client_buffer(self):
+ data = np.zeros((100, 3), dtype=np.uint32)
+ buffer = ClientElementBuffer(data)
+ self.assertIs(buffer.data, data)
+
+ with self.assertRaises(RuntimeError):
+ buffer.set_data(data)
+ with self.assertRaises(RuntimeError):
+ buffer.set_subdata(data)
+
+
+
+if __name__ == "__main__":
+ unittest.main()
diff --git a/vispy/gloo/tests/test_framebuffer.py b/vispy/gloo/tests/test_framebuffer.py
new file mode 100644
index 0000000..9f9c0ce
--- /dev/null
+++ b/vispy/gloo/tests/test_framebuffer.py
@@ -0,0 +1,206 @@
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team
+# All rights reserved.
+# -----------------------------------------------------------------------------
+import unittest
+import numpy as np
+from vispy.gloo import gl
+
+from vispy.gloo.framebuffer import RenderBuffer, FrameBuffer
+from vispy.gloo.texture import Texture2D
+
+
+class RenderBufferTest(unittest.TestCase):
+
+ def test_init(self):
+ # Init without args
+ buffer = RenderBuffer()
+ self.assertEqual(buffer._handle, 0)
+ self.assertEqual(buffer._need_update, False)
+ self.assertEqual(buffer._valid, False)
+
+ # Init with shape
+ buffer = RenderBuffer((100, 100))
+ self.assertEqual(buffer._need_update, True)
+
+
+ def test_setting_shape(self):
+ buffer = RenderBuffer()
+
+ # No format
+ buffer.set_shape((100,100))
+ self.assertEqual(buffer._shape, (100,100))
+ self.assertEqual(buffer._format, None)
+ #
+ buffer.set_shape((100,100, 1))
+ self.assertEqual(buffer._shape, (100,100))
+ self.assertEqual(buffer._format, None)
+ #
+ buffer.set_shape((100,100, 3))
+ self.assertEqual(buffer._shape, (100,100))
+ self.assertEqual(buffer._format, None)
+
+ # With invalid shape
+ with self.assertRaises(ValueError):
+ buffer.set_shape(None)
+ with self.assertRaises(ValueError):
+ buffer.set_shape(4)
+ with self.assertRaises(ValueError):
+ buffer.set_shape('test')
+ with self.assertRaises(ValueError):
+ buffer.set_shape((100,))
+ with self.assertRaises(ValueError):
+ buffer.set_shape((100,100,9))
+ with self.assertRaises(ValueError):
+ buffer.set_shape((100,100,3, 3))
+
+ # With valid format
+ buffer.set_shape((100,100), gl.ext.GL_RGBA8)
+ self.assertEqual(buffer._shape, (100,100))
+ self.assertEqual(buffer._format, gl.ext.GL_RGBA8)
+ #
+ buffer.set_shape((100,100), gl.GL_DEPTH_COMPONENT16)
+ self.assertEqual(buffer._shape, (100,100))
+ self.assertEqual(buffer._format, gl.GL_DEPTH_COMPONENT16)
+
+ # With invalid format
+ with self.assertRaises(ValueError):
+ buffer.set_shape((100,100), gl.GL_LUMINANCE)
+ with self.assertRaises(ValueError):
+ buffer.set_shape((100,100), gl.GL_RGB)
+
+
+ def test_resetting_shape(self):
+ buffer = RenderBuffer()
+
+ # Set same shape
+ buffer.set_shape((100,100))
+ self.assertEqual(buffer._need_update, True)
+ buffer._need_update = False
+ #
+ buffer.set_shape((100,100))
+ self.assertEqual(buffer._need_update, False)
+ #
+ buffer.set_shape((100,100, 1))
+ self.assertEqual(buffer._need_update, False)
+ buffer.set_shape((100,100, 3))
+ self.assertEqual(buffer._need_update, False)
+
+ # Set different shape
+ buffer.set_shape((100,101))
+ self.assertEqual(buffer._need_update, True)
+
+
+
+class FrameBufferTest(unittest.TestCase):
+
+ def test_init(self):
+ # Init without args
+ fbo = FrameBuffer()
+ self.assertEqual(fbo._handle, 0)
+ self.assertEqual(fbo._need_update, False)
+ self.assertEqual(fbo._valid, False)
+
+ # Init with args
+ fbo = FrameBuffer(RenderBuffer())
+ self.assertEqual(fbo._need_update, True)
+
+
+ def test_attaching(self):
+ fbo = FrameBuffer()
+ buffer = RenderBuffer()
+ texture = Texture2D()
+
+ # Attaching color
+ fbo = FrameBuffer()
+ fbo.attach_color(buffer)
+ self.assertEqual(fbo._attachment_color, buffer)
+ self.assertEqual(len(fbo._pending_attachments), 1)
+ #
+ fbo.attach_color(texture)
+ self.assertEqual(fbo._attachment_color, texture)
+ self.assertEqual(len(fbo._pending_attachments), 2)
+ #
+ fbo.attach_color(None)
+ self.assertEqual(fbo._attachment_color, None)
+ self.assertEqual(len(fbo._pending_attachments), 3)
+ #
+ with self.assertRaises(ValueError):
+ fbo.attach_color("test")
+ with self.assertRaises(ValueError):
+ fbo.attach_color(3)
+
+ # Attaching depth
+ fbo = FrameBuffer()
+ fbo.attach_depth(buffer)
+ self.assertEqual(fbo._attachment_depth, buffer)
+ self.assertEqual(len(fbo._pending_attachments), 1)
+ #
+ fbo.attach_depth(texture)
+ self.assertEqual(fbo._attachment_depth, texture)
+ self.assertEqual(len(fbo._pending_attachments), 2)
+ #
+ fbo.attach_depth(None)
+ self.assertEqual(fbo._attachment_depth, None)
+ self.assertEqual(len(fbo._pending_attachments), 3)
+ #
+ with self.assertRaises(ValueError):
+ fbo.attach_depth("test")
+ with self.assertRaises(ValueError):
+ fbo.attach_depth(3)
+
+ # Attach stencil
+ fbo = FrameBuffer()
+ fbo.attach_stencil(buffer)
+ self.assertEqual(fbo._attachment_stencil, buffer)
+ self.assertEqual(len(fbo._pending_attachments), 1)
+ #
+ with self.assertRaises(ValueError):
+ fbo.attach_stencil(texture)
+ #
+ fbo.attach_stencil(None)
+ self.assertEqual(fbo._attachment_stencil, None)
+ self.assertEqual(len(fbo._pending_attachments), 2)
+ #
+ with self.assertRaises(ValueError):
+ fbo.attach_stencil("test")
+ with self.assertRaises(ValueError):
+ fbo.attach_stencil(3)
+
+
+ def test_level(self):
+ fbo = FrameBuffer()
+ buffer = RenderBuffer()
+ texture = Texture2D()
+
+ # Valid level
+ fbo.attach_color(texture, 1)
+ self.assertEqual(fbo._pending_attachments[-1][2], 1)
+ fbo.attach_color(texture, 2)
+ self.assertEqual(fbo._pending_attachments[-1][2], 2)
+
+ # Invalid level
+ with self.assertRaises(ValueError):
+ fbo.attach_color(texture, 1.1)
+ with self.assertRaises(ValueError):
+ fbo.attach_color(texture, "test")
+
+
+ def test_auto_format(self):
+ fbo = FrameBuffer()
+
+ buffer = RenderBuffer((100,100))
+ fbo.attach_color(buffer)
+ self.assertEqual(buffer._format, gl.GL_RGB565)
+
+ buffer = RenderBuffer((100,100))
+ fbo.attach_depth(buffer)
+ self.assertEqual(buffer._format, gl.GL_DEPTH_COMPONENT16)
+
+ buffer = RenderBuffer((100,100))
+ fbo.attach_stencil(buffer)
+ self.assertEqual(buffer._format, gl.GL_STENCIL_INDEX8)
+
+
+if __name__ == "__main__":
+ unittest.main()
diff --git a/vispy/gloo/tests/test_globject.py b/vispy/gloo/tests/test_globject.py
new file mode 100644
index 0000000..2297edc
--- /dev/null
+++ b/vispy/gloo/tests/test_globject.py
@@ -0,0 +1,217 @@
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------------
+# Vispy - Copyright (c) 2013, Vispy Development Team. All rights reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+# -----------------------------------------------------------------------------
+import unittest
+
+import numpy as np
+
+from vispy.gloo import gl
+from vispy import gloo
+
+
+def _dummy(*args, **kwargs):
+ """ Dummy method to replace all GL calls with.
+ Return 1 for glGenTextures etc.
+ """
+ return 1
+
+def _dummy_glGetProgramiv(handle, mode):
+ if mode in (gl.GL_ACTIVE_ATTRIBUTES, gl.GL_ACTIVE_UNIFORMS):
+ return 0
+ else:
+ return 1
+
+def _dummy_glGetAttachedShaders(*args, **kwargs):
+ return ()
+
+
+
+class GLObjectTest(unittest.TestCase):
+
+ def setUp(self):
+ #print('Dummyfying gl namespace.')
+ for key in dir(gl):
+ if key.startswith('gl'):
+ setattr(gl, key, _dummy)
+ #
+ for key in dir(gl.ext):
+ if key.startswith('gl'):
+ setattr(gl.ext, key, _dummy)
+ #
+ gl.glGetProgramiv = _dummy_glGetProgramiv
+ gl.glGetAttachedShaders = _dummy_glGetAttachedShaders
+
+
+ def tearDown(self):
+ gl.use('desktop')
+
+
+ def _fix_ob(self, ob):
+ """ Modify object so we can keep track of its calls to _create,
+ _update, etc.
+ """
+ ob._actions = []
+
+ def _create():
+ ob._actions.append('create')
+ return ob.__class__._create(ob)
+ def _activate():
+ ob._actions.append('activate')
+ return ob.__class__._activate(ob)
+ def _deactivate():
+ ob._actions.append('deactivate')
+ return ob.__class__._deactivate(ob)
+ def _update():
+ ob._actions.append('update')
+ return ob.__class__._update(ob)
+ def _delete():
+ ob._actions.append('delete')
+ return ob.__class__._delete(ob)
+
+
+ ob._create = _create
+ ob._activate = _activate
+ ob._deactivate = _deactivate
+ ob._update = _update
+ ob._delete = _delete
+
+
+ def test_init(self):
+ obj = gloo.GLObject()
+ assert obj._handle == 0
+ assert obj._need_update == False
+ assert obj._valid == False
+ # assert obj._id == 1
+
+
+ def test_buffer(self):
+
+ # Some data that we need
+ data = np.zeros(100, np.uint16)
+ im2 = np.zeros((50,50), np.uint16)
+ im3 = np.zeros((20,20, 20), np.uint16)
+ shaders = gloo.VertexShader("x"), gloo.FragmentShader("x")
+
+ items = [
+ # Buffers
+ (gloo.buffer.Buffer(target=gl.GL_ARRAY_BUFFER), 'set_data', data),
+ (gloo.buffer.VertexBuffer(np.uint16), 'set_data', data),
+ (gloo.buffer.ElementBuffer(np.uint16), 'set_data', data),
+ # Textures
+ (gloo.Texture2D(), 'set_data', im2),
+ (gloo.Texture3D(), 'set_data', im3),
+ # FBO stuff
+ (gloo.RenderBuffer(), 'set_shape', (1,1)),
+ (gloo.FrameBuffer(), 'attach_color', gloo.RenderBuffer((1,1)) ),
+ # Shader stuff
+ (gloo.VertexShader(), 'set_code', "x"),
+ (gloo.FragmentShader(), 'set_code', "x"),
+ (gloo.Program(), 'attach', shaders),
+ ]
+
+ for ob, funcname, value in items:
+ self._fix_ob(ob)
+ #print('Testing GLObject compliance for %s' % ob.__class__.__name__)
+
+ # Initially a clear state
+ self.assertEqual(ob._need_update, False)
+
+ # Set value, now we should have a "dirty" state
+ x = ob
+ for part in funcname.split('.'):
+ x = getattr(x, part)
+ x(value)
+ self.assertEqual(ob._need_update, True)
+
+ # Activate the object
+ ob.activate()
+ # Now we should be activated
+ self.assertEqual(len(ob._actions), 3)
+ self.assertEqual(ob._actions[0], 'create')
+ self.assertEqual(ob._actions.count('update'), 1)
+ self.assertEqual(ob._actions.count('activate'), 1)
+
+ # Deactivate
+ ob.deactivate()
+ # Now we should be deactivated
+ self.assertEqual(len(ob._actions), 4)
+ self.assertEqual(ob._actions[-1], 'deactivate')
+
+ # Activate some more
+ for i in range(10):
+ ob.activate()
+
+ # Create and update should not have been called
+ self.assertEqual(ob._actions.count('create'), 1)
+ self.assertEqual(ob._actions.count('update'), 1)
+
+
+ def test_buffer_view(self):
+ """ Same as above, but special case for VertexBufferView that
+ needs special attention.
+ """
+
+ # Some "data"
+ data = np.zeros(100, np.uint16)
+ baseBuffer = gloo.buffer.VertexBuffer(np.uint16)
+
+ # Create object
+ ob = gloo.buffer.VertexBufferView(np.dtype(np.uint16), baseBuffer, 0)
+ funcname = 'base.set_data'
+ value = data
+
+ self._fix_ob(ob)
+ self._fix_ob(baseBuffer)
+
+ # Initially a clear state
+ self.assertEqual(ob._need_update, False)
+
+ # Set value, now we should have a "dirty" state
+ x = ob
+ for part in funcname.split('.'):
+ x = getattr(x, part)
+ x(value)
+ self.assertEqual(ob.base._need_update, True)
+
+ # Activate the object
+ ob.activate()
+ # Now we should be activated
+ self.assertEqual(len(ob._actions), 2)
+ self.assertEqual(ob._actions[0], 'create')
+ self.assertEqual(ob._actions.count('activate'), 1)
+ # Now we should be activated
+ self.assertEqual(len(ob.base._actions), 3)
+ self.assertEqual(ob.base._actions[0], 'create')
+ self.assertEqual(ob.base._actions.count('update'), 1)
+ self.assertEqual(ob.base._actions.count('activate'), 1)
+
+ # Deactivate
+ ob.deactivate()
+ # Now we should be deactivated
+ self.assertEqual(len(ob.base._actions), 4)
+ self.assertEqual(ob.base._actions[-1], 'deactivate')
+
+ # Activate some more
+ for i in range(10):
+ ob.activate()
+
+ # Create and update should not have been called
+ self.assertEqual(ob._actions.count('create'), 1)
+ self.assertEqual(ob._actions.count('update'), 0)
+
+ # Create and update should not have been called
+ self.assertEqual(ob.base._actions.count('create'), 1)
+ self.assertEqual(ob.base._actions.count('update'), 1)
+
+
+ def test_foo(self):
+ pass
+
+
+
+
+
+if __name__ == "__main__":
+ unittest.main()
diff --git a/vispy/gloo/tests/test_program.py b/vispy/gloo/tests/test_program.py
new file mode 100644
index 0000000..c9657bd
--- /dev/null
+++ b/vispy/gloo/tests/test_program.py
@@ -0,0 +1,155 @@
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team
+# All rights reserved.
+# -----------------------------------------------------------------------------
+import unittest
+import numpy as np
+
+from vispy.gloo import gl
+from vispy.gloo.program import Program
+from vispy.gloo.shader import VertexShader
+from vispy.gloo.shader import FragmentShader
+from vispy.gloo.buffer import VertexBuffer
+from vispy.gloo.buffer import ClientVertexBuffer
+
+
+
+
+# -----------------------------------------------------------------------------
+class ProgramTest(unittest.TestCase):
+
+ def test_init(self):
+ program = Program()
+ assert program._handle == 0
+ assert program._need_update == False
+ assert program._valid == False
+ assert program.shaders == []
+
+ def test_delete_no_context(self):
+ program = Program()
+ program.delete()
+
+ def test_init_from_string(self):
+ program = Program("A","B")
+ assert len(program.shaders) == 2
+ assert program.shaders[0].code == "A"
+ assert program.shaders[1].code == "B"
+
+ def test_init_from_shader(self):
+ program = Program(VertexShader("A"),FragmentShader("B"))
+ assert len(program.shaders) == 2
+ assert program.shaders[0].code == "A"
+ assert program.shaders[1].code == "B"
+
+ def test_unique_shader(self):
+ vert = VertexShader("A")
+ frag = FragmentShader("B")
+ program = Program([vert,vert],[frag,frag,frag])
+ assert len(program.shaders) == 2
+
+ def test_uniform(self):
+ vert = VertexShader("uniform float A;")
+ frag = FragmentShader("uniform float A; uniform vec4 B;")
+ program = Program(vert,frag)
+ assert program.uniforms[0].name == 'A'
+ assert program.uniforms[0].gtype == gl.GL_FLOAT
+ assert program.uniforms[1].name == 'B'
+ assert program.uniforms[1].gtype == gl.GL_FLOAT_VEC4
+
+ def test_attributes(self):
+ vert = VertexShader("attribute float A;")
+ frag = FragmentShader("")
+ program = Program(vert,frag)
+ assert program.attributes[0].name == 'A'
+ assert program.attributes[0].gtype == gl.GL_FLOAT
+
+ def test_attach(self):
+ vert = VertexShader("A")
+ frag = FragmentShader("B")
+ program = Program(vert)
+ program.attach(frag)
+ assert len(program.shaders) == 2
+ assert program.shaders[0].code == "A"
+ assert program.shaders[1].code == "B"
+
+ def test_detach(self):
+ vert = VertexShader("A")
+ frag = FragmentShader("B")
+ program = Program(vert, frag)
+ program.detach(frag)
+ assert len(program.shaders) == 1
+ assert program.shaders[0].code == "A"
+
+ def test_failed_build(self):
+ vert = VertexShader("A")
+ frag = FragmentShader("B")
+
+ program = Program(vert = vert)
+ with self.assertRaises(RuntimeError):
+ program.activate()
+
+ program = Program(frag = frag)
+ with self.assertRaises(RuntimeError):
+ program.activate()
+
+ def test_setitem(self):
+ vert = VertexShader("")
+ frag = FragmentShader("")
+
+ program = Program(vert,frag)
+ with self.assertRaises(NameError):
+ program["A"] = 1
+
+ def test_set_uniform_vec4(self):
+ vert = VertexShader("uniform vec4 color;")
+ frag = FragmentShader("")
+
+ program = Program(vert,frag)
+ program["color"] = 1,1,1,1
+
+ def test_set_attribute_float(self):
+
+ vert = VertexShader("attribute float f;")
+ frag = FragmentShader("")
+
+ program = Program(vert,frag)
+ program["f"] = VertexBuffer(np.zeros(100, dtype=np.float32))
+ assert program._attributes["f"].count == 100
+
+ program = Program(vert,frag)
+ program["f"] = ClientVertexBuffer(np.zeros((100,1,1), dtype=np.float32))
+ assert program._attributes["f"].count == 100
+
+ program = Program(vert,frag)
+ with self.assertRaises(ValueError):
+ program["f"] = np.zeros((100,1,1), dtype=np.float32)
+
+
+
+ def test_set_attribute_vec4(self):
+ vert = VertexShader("attribute vec4 color;")
+ frag = FragmentShader("")
+
+ program = Program(vert,frag)
+ with self.assertRaises(ValueError):
+ program["color"] = np.array(3, dtype=np.float32)
+
+ program = Program(vert,frag)
+ with self.assertRaises(ValueError):
+ program["color"] = np.array((100,5), dtype=np.float32)
+
+ program = Program(vert,frag)
+ program["color"] = ClientVertexBuffer(np.zeros((100,4), dtype=np.float32))
+ assert program._attributes["color"].count == 100
+
+ program = Program(vert,frag)
+ program["color"] = ClientVertexBuffer(np.zeros((100,1,4), dtype=np.float32))
+ assert program._attributes["color"].count == 100
+
+ program = Program(vert,frag)
+ program["color"] = ClientVertexBuffer(np.zeros(100, dtype=(np.float32,4)))
+ assert program._attributes["color"].count == 100
+
+
+if __name__ == "__main__":
+ unittest.main()
diff --git a/vispy/gloo/tests/test_shader.py b/vispy/gloo/tests/test_shader.py
new file mode 100644
index 0000000..a0b017c
--- /dev/null
+++ b/vispy/gloo/tests/test_shader.py
@@ -0,0 +1,89 @@
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team
+# All rights reserved.
+# -----------------------------------------------------------------------------
+import unittest
+from vispy.gloo import gl
+
+from vispy.gloo.shader import ShaderError
+from vispy.gloo.shader import VertexShader
+from vispy.gloo.shader import FragmentShader
+
+
+
+# -----------------------------------------------------------------------------
+class VertexShaderTest(unittest.TestCase):
+
+ def test_init(self):
+ shader = VertexShader()
+ assert shader._target == gl.GL_VERTEX_SHADER
+
+# -----------------------------------------------------------------------------
+class FragmentShaderTest(unittest.TestCase):
+
+ def test_init(self):
+ shader = FragmentShader()
+ assert shader._target == gl.GL_FRAGMENT_SHADER
+
+
+# -----------------------------------------------------------------------------
+class ShaderTest(unittest.TestCase):
+
+ def test_init(self):
+ shader = VertexShader()
+ assert shader._handle == 0
+ assert shader._need_update == False
+ assert shader._valid == False
+ assert shader.code == None
+ assert shader.source == None
+
+ def test_sourcecode(self):
+ code = "/* Code */"
+ shader = VertexShader(code)
+ assert shader.code == code
+ assert shader.source == "<string>"
+
+ def test_setcode(self):
+ shader = VertexShader()
+ shader.set_code("")
+ assert shader._need_update == True
+
+ def test_empty_build(self):
+ shader = VertexShader()
+ assert shader._code is None
+ # This needs a context, because _init() will be called first
+ #with self.assertRaises(ShaderError):
+ # shader.activate()
+
+ def test_delete_no_context(self):
+ shader = VertexShader()
+ shader.delete()
+
+ def test_uniform_float(self):
+ shader = VertexShader("uniform float color;")
+ uniforms = shader._get_uniforms()
+ assert uniforms == [ ("color", gl.GL_FLOAT) ]
+
+ def test_uniform_vec4(self):
+ shader = VertexShader("uniform vec4 color;")
+ uniforms = shader._get_uniforms()
+ assert uniforms == [ ("color", gl.GL_FLOAT_VEC4) ]
+
+ def test_uniform_array(self):
+ shader = VertexShader("uniform float color[2];")
+ uniforms=shader._get_uniforms()
+ assert uniforms == [ ("color[0]", gl.GL_FLOAT),
+ ("color[1]", gl.GL_FLOAT) ]
+
+ def test_attribute_float(self):
+ shader = VertexShader("attribute float color;")
+ attributes = shader._get_attributes()
+ assert attributes == [ ("color", gl.GL_FLOAT) ]
+
+ def test_attribute_vec4(self):
+ shader = VertexShader("attribute vec4 color;")
+ attributes = shader._get_attributes()
+ assert attributes == [ ("color", gl.GL_FLOAT_VEC4) ]
+
+if __name__ == "__main__":
+ unittest.main()
diff --git a/vispy/gloo/tests/test_texture.py b/vispy/gloo/tests/test_texture.py
new file mode 100644
index 0000000..f6eaf9f
--- /dev/null
+++ b/vispy/gloo/tests/test_texture.py
@@ -0,0 +1,260 @@
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team
+# All rights reserved.
+# -----------------------------------------------------------------------------
+import unittest
+import numpy as np
+from vispy.gloo import gl
+from vispy.gloo.texture import Texture, Texture2D, Texture3D
+
+
+
+class TextureBasetests:
+
+ def test_init(self):
+
+ data = np.zeros(self._shape0, np.float32)
+ tex = self._klass(data)
+ self.assertEqual(tex._levels[0].format, gl.GL_LUMINANCE)
+ self.assertEqual(tex._levels[0].shape, data.shape)
+
+
+ def test_allocating_data(self):
+
+ tex = self._klass()
+
+ # Luminance
+ tex.set_shape(self._shape0)
+ self.assertEqual(tex._levels[0].format, gl.GL_LUMINANCE)
+ self.assertEqual(tex._levels[0].shape, self._shape0)
+
+ # Luminance again, but now an explicit color channel
+ tex.set_shape(self._shape1)
+ self.assertEqual(tex._levels[0].format, gl.GL_LUMINANCE)
+ self.assertEqual(tex._levels[0].shape, self._shape1)
+
+ # Luminance + alpha
+ tex.set_shape(self._shape2)
+ self.assertEqual(tex._levels[0].format, gl.GL_LUMINANCE_ALPHA)
+ self.assertEqual(tex._levels[0].shape, self._shape2)
+
+ # RGB
+ tex.set_shape(self._shape3)
+ self.assertEqual(tex._levels[0].format, gl.GL_RGB)
+ self.assertEqual(tex._levels[0].shape, self._shape3)
+
+ # RGBA
+ tex.set_shape(self._shape4)
+ self.assertEqual(tex._levels[0].format, gl.GL_RGBA)
+ self.assertEqual(tex._levels[0].shape, self._shape4)
+
+ # Alpha
+ tex.set_shape(self._shape0, format=gl.GL_ALPHA)
+ self.assertEqual(tex._levels[0].format, gl.GL_ALPHA)
+ self.assertEqual(tex._levels[0].shape, self._shape0)
+
+
+ def test_setting_data(self):
+
+ tex = self._klass()
+
+ # Luminance
+ data = np.zeros(self._shape0, np.float32)
+ tex.set_data(data)
+ self.assertEqual(tex._levels[0].format, gl.GL_LUMINANCE)
+ self.assertEqual(tex._levels[0].shape, data.shape)
+
+ # Luminance again, but now an explicit color channel
+ data = np.zeros(self._shape1, np.float32)
+ tex.set_data(data)
+ self.assertEqual(tex._levels[0].format, gl.GL_LUMINANCE)
+ self.assertEqual(tex._levels[0].shape, data.shape)
+
+ # Luminance + alpha
+ data = np.zeros(self._shape2, np.float32)
+ tex.set_data(data)
+ self.assertEqual(tex._levels[0].format, gl.GL_LUMINANCE_ALPHA)
+ self.assertEqual(tex._levels[0].shape, data.shape)
+
+ # RGB
+ data = np.zeros(self._shape3, np.float32)
+ tex.set_data(data)
+ self.assertEqual(tex._levels[0].format, gl.GL_RGB)
+ self.assertEqual(tex._levels[0].shape, data.shape)
+
+ # RGBA
+ data = np.zeros(self._shape4, np.float32)
+ tex.set_data(data)
+ self.assertEqual(tex._levels[0].format, gl.GL_RGBA)
+ self.assertEqual(tex._levels[0].shape, data.shape)
+
+ # Alpha
+ data = np.zeros(self._shape0, np.float32)
+ tex.set_data(data, format=gl.GL_ALPHA)
+ self.assertEqual(tex._levels[0].format, gl.GL_ALPHA)
+ self.assertEqual(tex._levels[0].shape, data.shape)
+
+
+ def test_invalid_shape(self):
+
+ tex = self._klass()
+
+ data = np.zeros(self._shape5, np.float32)
+ with self.assertRaises(ValueError):
+ tex.set_data(data)
+
+ # Format and shape mismatch
+ data = np.zeros(self._shape1, np.float32)
+ with self.assertRaises(ValueError):
+ tex.set_data(data, format=gl.GL_RGB)
+
+ # Format and shape mismatch
+ data = np.zeros(self._shape3, np.float32)
+ with self.assertRaises(ValueError):
+ tex.set_data(data, format=gl.GL_RGBA)
+
+ # Format and shape mismatch
+ data = np.zeros(self._shape4, np.float32)
+ with self.assertRaises(ValueError):
+ tex.set_data(data, format=gl.GL_RGB)
+
+ # Format and shape mismatch
+ data = np.zeros(self._shape3, np.float32)
+ with self.assertRaises(ValueError):
+ tex.set_data(data, format=gl.GL_ALPHA)
+
+ def test_dtype(self):
+ pass # No use, we convert dtype if necessary
+
+
+ def test_subdata(self):
+
+ tex = self._klass()
+ data = np.zeros(self._shape0, np.float32)
+ offset1 = [0 for i in self._shape0]
+ offset2 = [10 for i in self._shape0]
+
+ # No pending data now
+ self.assertEqual(len(tex._levels), 0)
+
+ # No data allocated yet
+ with self.assertRaises(RuntimeError):
+ tex.set_subdata(offset1, data)
+
+ # Allocate data
+ tex.set_shape(data.shape)
+
+ # Pending data
+ self.assertEqual(tex._levels[0].need_resize, True)
+ self.assertEqual(len(tex._levels[0].pending_data), 0)
+
+ # Now it should work
+ tex.set_subdata(offset1, data)
+ self.assertEqual(len(tex._levels[0].pending_data), 1)
+ #
+ tex.set_subdata(offset1, data)
+ self.assertEqual(len(tex._levels[0].pending_data), 2)
+
+ # Reset using set_shape (no pending data)
+ tex.set_shape(data.shape)
+ self.assertEqual(len(tex._levels[0].pending_data), 0)
+
+ # Again
+ tex.set_subdata(offset1, data)
+ tex.set_subdata(offset1, data)
+ self.assertEqual(len(tex._levels[0].pending_data), 2)
+
+ # Reset using set_data (1 pending data)
+ tex.set_data(data)
+ self.assertEqual(len(tex._levels[0].pending_data), 1)
+
+
+ def test_subdata_shape_and_format(self):
+
+ tex = self._klass()
+ data = np.zeros(self._shape0, np.float32)
+ offset1 = [0 for i in self._shape0]
+ offset2 = [9 for i in self._shape0]
+ offset3 = [-1 for i in self._shape0]
+ offset4 = [11 for i in self._shape0]
+
+ # Allocate data
+ tex.set_shape([i+10 for i in self._shape0])
+
+ # Some stuff that should work
+ tex.set_subdata(offset1, data)
+ tex.set_subdata(offset2, data)
+
+ # Some stuff that should not (shape)
+ with self.assertRaises(ValueError):
+ tex.set_subdata(offset3, data)
+ with self.assertRaises(ValueError):
+ tex.set_subdata(offset4, data)
+
+ # More stuff that should not (format)
+ with self.assertRaises(ValueError):
+ tex.set_subdata(offset1, data, format=gl.GL_RGB)
+ with self.assertRaises(ValueError):
+ tex.set_subdata(offset1, data, format=gl.GL_LUMINANCE_ALPHA)
+ with self.assertRaises(ValueError):
+ tex.set_subdata(offset1, data,format= gl.GL_LUMINANCE_ALPHA)
+
+ # But this should work
+ tex.set_shape([i+10 for i in self._shape0], format=gl.GL_ALPHA)
+ tex.set_subdata(offset1, data)
+
+
+ def test_levels(self):
+
+ # Create tex
+ tex = self._klass()
+ self.assertEqual(len(tex._levels), 0)
+
+ # Create level 0
+ tex.set_shape(self._shape3)
+ self.assertEqual(len(tex._levels), 1)
+ self.assertIn(0, tex._levels)
+
+ # Create level 2
+ tex.set_shape(self._shape3, 2)
+ self.assertEqual(len(tex._levels), 2)
+ self.assertIn(0, tex._levels)
+ self.assertIn(2, tex._levels)
+
+ # Create level 4
+ tex.set_shape(self._shape3, 4)
+ self.assertEqual(len(tex._levels), 3)
+ self.assertIn(0, tex._levels)
+ self.assertIn(2, tex._levels)
+ self.assertIn(4, tex._levels)
+
+
+
+class Texture2DTest(TextureBasetests, unittest.TestCase):
+ def setUp(self):
+ self._klass = Texture2D
+ self._shape0 = 100, 100
+ self._shape1 = 100, 100, 1
+ self._shape2 = 100, 100, 2
+ self._shape3 = 100, 100, 3
+ self._shape4 = 100, 100, 4
+ self._shape5 = 100, 100, 5
+
+
+
+class Texture3DTest(TextureBasetests, unittest.TestCase):
+ def setUp(self):
+ self._klass = Texture3D
+ self._shape0 = 10, 10, 10
+ self._shape1 = 10, 10, 10, 1
+ self._shape2 = 10, 10, 10, 2
+ self._shape3 = 10, 10, 10, 3
+ self._shape4 = 10, 10, 10, 4
+ self._shape5 = 10, 10, 10, 5
+
+
+if __name__ == "__main__":
+ unittest.main()
+# t = Texture2DTest()
+# t.setUp()
+# t.test_invalid_shape()
diff --git a/vispy/gloo/tests/test_variable.py b/vispy/gloo/tests/test_variable.py
new file mode 100644
index 0000000..14ed025
--- /dev/null
+++ b/vispy/gloo/tests/test_variable.py
@@ -0,0 +1,127 @@
+# -----------------------------------------------------------------------------
+# VisPy - Copyright (c) 2013, Vispy Development Team
+# All rights reserved.
+# -----------------------------------------------------------------------------
+import unittest
+import numpy as np
+from vispy.gloo import gl
+
+from vispy.gloo.variable import Uniform
+from vispy.gloo.variable import Variable
+from vispy.gloo.variable import Attribute
+
+
+# -----------------------------------------------------------------------------
+class VariableTest(unittest.TestCase):
+
+ def test_init(self):
+ variable = Variable("A", gl.GL_FLOAT)
+ assert variable._dirty == False
+ assert variable.name == "A"
+ assert variable.data is None
+ assert variable.gtype == gl.GL_FLOAT
+ assert variable.active == False
+
+
+ def test_init_wrong_type(self):
+ with self.assertRaises(ValueError):
+ v = Variable("A", gl.GL_INT_VEC2)
+ with self.assertRaises(ValueError):
+ v = Variable("A", gl.GL_INT_VEC3)
+ with self.assertRaises(ValueError):
+ v = Variable("A", gl.GL_INT_VEC4)
+
+ with self.assertRaises(ValueError):
+ v = Variable("A", gl.GL_BOOL_VEC2)
+ with self.assertRaises(ValueError):
+ v = Variable("A", gl.GL_BOOL_VEC3)
+ with self.assertRaises(ValueError):
+ v = Variable("A", gl.GL_BOOL_VEC4)
+
+
+
+# -----------------------------------------------------------------------------
+class UniformTest(unittest.TestCase):
+
+ def test_init(self):
+ uniform = Uniform("A", gl.GL_FLOAT)
+ assert uniform.texture_unit == -1
+
+ def test_float(self):
+ uniform = Uniform("A", gl.GL_FLOAT)
+ assert uniform.dtype == np.float32
+ assert uniform.size == 1
+
+ def test_vec2(self):
+ uniform = Uniform("A", gl.GL_FLOAT_VEC2)
+ assert uniform.dtype == np.float32
+ assert uniform.size == 2
+
+ def test_vec3(self):
+ uniform = Uniform("A", gl.GL_FLOAT_VEC2)
+ assert uniform.dtype == np.float32
+ assert uniform.size == 2
+
+ def test_vec4(self):
+ uniform = Uniform("A", gl.GL_FLOAT_VEC2)
+ assert uniform.dtype == np.float32
+ assert uniform.size == 2
+
+ def test_int(self):
+ uniform = Uniform("A", gl.GL_INT)
+ assert uniform.dtype == np.int32
+ assert uniform.size == 1
+
+ def test_mat2(self):
+ uniform = Uniform("A", gl.GL_FLOAT_MAT2)
+ assert uniform.dtype == np.float32
+ assert uniform.size == 4
+
+ def test_mat3(self):
+ uniform = Uniform("A", gl.GL_FLOAT_MAT3)
+ assert uniform.dtype == np.float32
+ assert uniform.size == 9
+
+ def test_mat4(self):
+ uniform = Uniform("A", gl.GL_FLOAT_MAT4)
+ assert uniform.dtype == np.float32
+ assert uniform.size == 16
+
+ def test_set(self):
+ uniform = Uniform("A", gl.GL_FLOAT_VEC4)
+
+ uniform.set_data(1)
+ assert (uniform.data == 1).all()
+
+ uniform.set_data([1,2,3,4])
+ assert (uniform.data == [1,2,3,4]).all()
+
+ def test_set_exception(self):
+ uniform = Uniform("A", gl.GL_FLOAT_VEC4)
+
+ with self.assertRaises(ValueError):
+ uniform.set_data([1,2])
+
+ with self.assertRaises(ValueError):
+ uniform.set_data([1,2,3,4,5])
+
+
+# -----------------------------------------------------------------------------
+class AttributeTest(unittest.TestCase):
+
+ def test_init(self):
+ attribute = Attribute("A", gl.GL_FLOAT)
+ assert attribute.size == 1
+
+ def test_set_generic(self):
+ attribute = Attribute("A", gl.GL_FLOAT_VEC4)
+
+ attribute.set_data([1,2,3,4])
+ assert type(attribute.data) is np.ndarray
+
+ attribute.set_data(1)
+ assert type(attribute.data) is np.ndarray
+
+
+if __name__ == "__main__":
+ unittest.main()
diff --git a/vispy/gloo/texture.py b/vispy/gloo/texture.py
new file mode 100644
index 0000000..59a26c7
--- /dev/null
+++ b/vispy/gloo/texture.py
@@ -0,0 +1,724 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Definition of Texture class.
+
+This code is inspired by similar classes from Visvis and Pygly.
+
+"""
+
+# todo: implement ext_available
+# todo: make a Texture1D that makes a nicer interface to a 2D texture
+# todo: same for Texture3D?
+# todo: Cubemap texture
+# todo: mipmapping, allow creating mipmaps
+# todo: compressed textures?
+
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+import numpy as np
+
+from vispy.util.six import string_types
+from . import gl
+from . import GLObject, ext_available, convert_to_enum
+
+
+
+
+
+class TextureError(RuntimeError):
+ """ Raised when something goes wrong that depens on state that was set
+ earlier (due to deferred loading).
+ """
+ pass
+
+
+
+class TextureLevel(object):
+ """ Minimal class to hold together some values that together
+ represent one texture level.
+ """
+ def __init__(self, level):
+ self.level = level # 0, 1, 2, etc.
+ self.format = None # GL_RGB, GL_LUMINANCE etc.
+ self.shape = None # Shape of a corresponding numpy array, zyx-order
+ self.need_resize = False # Whether shape or format has changed
+ self.pending_data = [] # Data to upload
+
+
+ def set(self, shape, format):
+ """ Set shape and format. Return True if this requires a resize.
+ """
+ # Discart pending data
+ self.pending_data = []
+ # If nothing changed, early exit. Otherwise we need a resize
+ if (self.shape == shape) and (self.format == format):
+ return False
+ else:
+ self.shape = shape
+ self.format = format
+ self.need_resize = True
+ return True
+
+
+
+class Texture(GLObject):
+ """ Representation of an OpenGL texture.
+
+ """
+
+ # Dict that maps numpy datatypes to openGL ES 2.0 data types
+ # We use strings to be more failsafe; e.g. np.float128 does not always exist
+ DTYPE2GTYPE = { 'uint8': gl.GL_UNSIGNED_BYTE,
+ 'float16': gl.ext.GL_HALF_FLOAT, # Needs GL_OES_texture_half_float
+ 'float32': gl.GL_FLOAT, # Needs GL_OES_texture_float
+ }
+
+
+ def __init__(self, target, data=None, format=None, clim=None):
+ GLObject.__init__(self)
+
+ # Store target (i.e. the texture type)
+ if target not in [gl.GL_TEXTURE_2D, gl.ext.GL_TEXTURE_3D]:
+ raise ValueError('Unsupported target "%r"' % target)
+ self._target = target
+
+ # Keep track of levels: dict of TextureLevel instances
+ # Each texLevel stores shape, format, pending data, need_resize
+ self._levels = {}
+
+ # The parameters that apply to this texture. One variable to
+ # keep track of pending parameters, the other for resetting
+ # parameters if its re-uploaded.
+ self._texture_params = {}
+ self._pending_params = {}
+
+ # Set default parameters for min and mag filter, otherwise an
+ # image is not shown by default, since the default min_filter
+ # is GL_NEAREST_MIPMAP_LINEAR
+ # Note that mipmapping is not allowed unless the texture_npot
+ # extension is available.
+ self.set_filter(gl.GL_LINEAR, gl.GL_LINEAR)
+
+ # Set default parameter for clamping. CLAMP_TO_EDGE since that
+ # is required if a texture is used as a render target.
+ # Also, in OpenGL ES 2.0, wrapping must be CLAMP_TO_EDGE if
+ # textures are not a power of two, unless the texture_npot extension
+ # is available.
+ if self._target == gl.ext.GL_TEXTURE_3D:
+ self.set_wrapping(gl.GL_CLAMP_TO_EDGE, gl.GL_CLAMP_TO_EDGE,
+ gl.GL_CLAMP_TO_EDGE)
+ else:
+ self.set_wrapping(gl.GL_CLAMP_TO_EDGE, gl.GL_CLAMP_TO_EDGE)
+
+ # Reset status; set_filter and set_wrapping were called.
+ self._need_update = False
+
+ # Set data?
+ if data is None:
+ pass
+ elif isinstance(data, np.ndarray):
+ self.set_data(data, format=format, clim=clim)
+ elif isinstance(data, tuple):
+ self.set_shape(data, format=format)
+ else:
+ raise ValueError('Invalid value to initialize Texture with.')
+
+
+ def set_filter(self, mag_filter, min_filter):
+ """ Set interpolation filters. EIther parameter can be None to
+ not (re)set it.
+
+ Parameters
+ ----------
+ mag_filter : str
+ The magnification filter (when texels are larger than screen
+ pixels). Can be NEAREST, LINEAR. The OpenGL enum can also be given.
+ min_filter : str
+ The minification filter (when texels are smaller than screen
+ pixels). For this filter, mipmapping can be applied to perform
+ antialiasing (if mipmaps are available for this texture).
+ Can be NEAREST, LINEAR, NEAREST_MIPMAP_NEAREST,
+ NEAREST_MIPMAP_LINEAR, LINEAR_MIPMAP_NEAREST,
+ LINEAR_MIPMAP_LINEAR. The OpenGL enum can also be given.
+ """
+ # Allow strings
+ mag_filter = convert_to_enum(mag_filter, True)
+ min_filter = convert_to_enum(min_filter, True)
+ # Check
+ assert mag_filter in (None, gl.GL_NEAREST, gl.GL_LINEAR)
+ assert min_filter in (None, gl.GL_NEAREST, gl.GL_LINEAR,
+ gl.GL_NEAREST_MIPMAP_NEAREST, gl.GL_NEAREST_MIPMAP_LINEAR,
+ gl.GL_LINEAR_MIPMAP_NEAREST, gl.GL_LINEAR_MIPMAP_LINEAR)
+
+ # Set
+ if mag_filter is not None:
+ self._pending_params[gl.GL_TEXTURE_MAG_FILTER] = mag_filter
+ self._texture_params[gl.GL_TEXTURE_MAG_FILTER] = mag_filter
+ if min_filter is not None:
+ self._pending_params[gl.GL_TEXTURE_MIN_FILTER] = min_filter
+ self._texture_params[gl.GL_TEXTURE_MIN_FILTER] = min_filter
+
+ self._need_update = True
+
+
+ def set_wrapping(self, wrapx, wrapy, wrapz=None):
+ """ Set texture coordinate wrapping.
+
+ Parameters
+ ----------
+ wrapx : str
+ The wrapping mode in the x-direction. Can be GL_REPEAT,
+ GL_CLAMP_TO_EDGE, GL_MIRRORED_REPEAT. The OpenGL enum can also
+ be given.
+ wrapy : str
+ Dito for y.
+ wrapz : str
+ Dito for z. Only makes sense for 3D textures, and requires
+ the texture_3d extension. Optional.
+ """
+ # Allow strings
+ wrapx = convert_to_enum(wrapx, True)
+ wrapy = convert_to_enum(wrapy, True)
+ wrapz = convert_to_enum(wrapz, True)
+ # Check
+ assert wrapx in (None, gl.GL_REPEAT, gl.GL_CLAMP_TO_EDGE, gl.GL_MIRRORED_REPEAT)
+ assert wrapy in (None, gl.GL_REPEAT, gl.GL_CLAMP_TO_EDGE, gl.GL_MIRRORED_REPEAT)
+ assert wrapz in (None, gl.GL_REPEAT, gl.GL_CLAMP_TO_EDGE, gl.GL_MIRRORED_REPEAT)
+
+ # Set
+ if wrapx is not None:
+ self._pending_params[gl.GL_TEXTURE_WRAP_S] = wrapx
+ self._texture_params[gl.GL_TEXTURE_WRAP_S] = wrapx
+ if wrapy is not None:
+ self._pending_params[gl.GL_TEXTURE_WRAP_T] = wrapy
+ self._texture_params[gl.GL_TEXTURE_WRAP_T] = wrapy
+ if wrapz is not None:
+ self._pending_params[gl.ext.GL_TEXTURE_WRAP_R] = wrapz
+ self._texture_params[gl.ext.GL_TEXTURE_WRAP_R] = wrapz
+
+ self._need_update = True
+
+
+ def set_shape(self, shape, level=0, format=None):
+ """ Allocate storage for this texture. This is useful if the texture
+ is used as a render target for an FBO.
+
+ A call that only uses the shape argument does not result in an
+ action if the call would not change the shape.
+
+ Parameters
+ ----------
+ shape : tuple
+ The shape of the "virtual" data. By specifying e.g. (20,20,3) for
+ a Texture2D, one implicitly sets the format to GL_RGB. Note
+ that shape[0] is height.
+ level : int
+ The mipmap level. Default 0.
+ format : str
+ The format representation of the data. If not given or None,
+ it is decuced from the given data. Can be RGB, RGBA, LUMINANCE,
+ LUMINANCE_ALPHA, ALPHA. The OpenGL enum can also be given.
+ """
+
+ # Check level, get texLevel instance
+ assert isinstance(level, int) and level >= 0
+ texLevel = self._levels.get(level, None)
+ if texLevel is None:
+ texLevel = self._levels[level] = TextureLevel(level)
+
+ # Get ndim
+ MAP = {gl.GL_TEXTURE_2D:2, gl.ext.GL_TEXTURE_3D:3}
+ ndim = MAP.get(self._target, 0)
+
+ # Check shape
+ shape = tuple([int(i) for i in shape])
+ if not len(shape) in (ndim, ndim+1):
+ raise ValueError('Shape must be ndim or ndim+1.')
+ if not all([i>0 for i in shape]):
+ raise ValueError('Shape cannot contain elements <= 0.')
+
+ # Check format
+ if format is None:
+ format = get_formats(shape, self._target)[0]
+ else:
+ format = convert_to_enum(format)
+ if format not in get_formats(shape, self._target):
+ raise ValueError('Given format does not match with shape.')
+
+ # Set new shape and format, force new update if necessary
+ self._need_update = texLevel.set(shape, format)
+
+
+ def set_data(self, data, level=0, format=None, clim=None):
+ """ Set the data for this texture. This method can be called at any
+ time (even if there is no context yet).
+
+ It is relatively cheap to call this function multiple times,
+ only the last data is set right before drawing. If the shape
+ of the given data matches the shape of the current texture, the
+ data is updated in a fast manner.
+
+ Parameters
+ ----------
+ data : numpy array
+ The texture data to set.
+ level : int
+ The mipmap level. Default 0.
+ format : str
+ The format representation of the data. If not given or None,
+ it is decuced from the given data. Can be RGB, RGBA, LUMINANCE,
+ LUMINANCE_ALPHA, ALPHA. The OpenGL enum can also be given.
+ clim : (min, max)
+ Contrast limits for the data. If specified, min will end
+ up being 0.0 (black) and max will end up as 1.0 (white).
+ If not given or None, clim is determined automatically. For
+ floats they become (0.0, 1.0). For integers the are mapped to
+ the full range of the type.
+
+ """
+
+ # Check level, get texLevel instance
+ assert isinstance(level, int) and level >= 0
+ texLevel = self._levels.get(level, None)
+ if texLevel is None:
+ texLevel = self._levels[level] = TextureLevel(level)
+
+ # Get ndim
+ MAP = {gl.GL_TEXTURE_2D:2, gl.ext.GL_TEXTURE_3D:3}
+ ndim = MAP.get(self._target, 0)
+
+ # Check data
+ shape = data.shape
+ if not isinstance(data, np.ndarray):
+ raise ValueError("Data should be a numpy array.")
+ if not data.ndim in (ndim, ndim+1):
+ raise ValueError('Data shape must be ndim or ndim+1.')
+
+ # Check format
+ if format is None:
+ format = get_formats(shape, self._target)[0]
+ else:
+ format = convert_to_enum(format)
+ if format not in get_formats(shape, self._target):
+ raise ValueError('Given format does not match with shape.')
+
+ # Check clim
+ assert clim is None or (isinstance(clim, tuple) and len(clim)==2)
+
+ # Get offset of all zeros
+ offset = [0 for i in data.shape[:ndim]]
+
+ # Set new shape and format, does not cause a resize if not necessary
+ texLevel.set(shape, format)
+
+ # Set pending data
+ texLevel.pending_data.append( (data, clim, offset) )
+ self._need_update = True
+
+
+ def set_subdata(self, offset, data, level=0, format=None, clim=None):
+ """ Set a region of data for this texture. This method can be
+ called at any time (even if there is no context yet).
+
+ In contrast to set_data(), each call to this method results in
+ an OpenGL api call.
+
+ Parameters
+ ----------
+ offset : tuple
+ The offset for each dimension, to update part of the texture.
+ data : numpy array
+ The texture data to set. The data (with offset) cannot exceed
+ the boundaries of the current texture.
+ level : int
+ The mipmap level. Default 0.
+ format : OpenGL enum
+ The format representation of the data. If not given or None,
+ it is decuced from the given data. Can be RGB, RGBA, LUMINANCE,
+ LUMINANCE_ALPHA, ALPHA. The OpenGL enum can also be given.
+ clim : (min, max)
+ Contrast limits for the data. If specified, min will end
+ up being 0.0 (black) and max will end up as 1.0 (white).
+ If not given or None, clim is determined automatically. For
+ floats they become (0.0, 1.0). For integers the are mapped to
+ the full range of the type.
+
+ """
+
+ # Check level, get texLevel instance
+ assert isinstance(level, int) and level >= 0
+ texLevel = self._levels.get(level, None)
+
+ # Is there data?
+ if not texLevel or not texLevel.shape:
+ raise RuntimeError('Cannot set subdata if there is no '
+ 'texture allocated yet.')
+
+ # Get ndim
+ MAP = {gl.GL_TEXTURE_2D:2, gl.ext.GL_TEXTURE_3D:3}
+ ndim = MAP.get(self._target, 0)
+
+ # Check data
+ shape = data.shape
+ if not isinstance(data, np.ndarray):
+ raise ValueError("Data should be a numpy array.")
+ if not data.ndim in (ndim, ndim+1):
+ raise ValueError('Data shape must be ndim or ndim+1.')
+
+ # Check offset
+ offset = tuple([int(i) for i in offset])
+ if not len(offset) == ndim:
+ raise ValueError('Offset must match with number of dimensions.')
+ if not all([i>=0 for i in offset]):
+ raise ValueError('Offset cannot contain elements < 0.')
+ fits = [(offset[i]+shape[i]<=texLevel.shape[i]) for i in range(ndim)]
+ if not all(fits):
+ raise ValueError("Given subdata does not fit in the existing texture.")
+
+ # Get format if not given
+ if format is None:
+ if texLevel.format not in get_formats(shape, self._target):
+ raise ValueError('Subdata shape does not match with current format.')
+ else:
+ format = convert_to_enum(format)
+ if format != texLevel.format:
+ raise ValueError('Subdata must have the same format as the existing data.')
+
+ # Check clim
+ assert clim is None or (isinstance(clim, tuple) and len(clim)==2)
+
+ # Set pending data
+ texLevel.pending_data.append( (data, clim, offset) )
+ self._need_update = True
+
+
+ def _create(self):
+ self._handle = gl.glGenTextures(1)
+
+
+ def _delete(self):
+ gl.glDeleteTextures([self._handle])
+
+
+ def _activate(self):
+ gl.glBindTexture(self._target, self._handle)
+
+
+ def _deactivate(self):
+ gl.glBindTexture(self._target, 0)
+
+
+ def _update(self):
+
+ # If we use a 3D texture, we need an extension
+ if self._target == gl.ext.GL_TEXTURE_3D:
+ if not ext_available('GL_texture_3D'):
+ raise TextureError('3D Texture not available.')
+
+
+ # For each level ...
+ for texLevel in self._levels.values():
+
+ # Need to resize?
+ if texLevel.need_resize:
+ texLevel.need_resize = False
+ new_texture_created = False
+ if self._valid and len(self._levels) == 1:
+ # We delete the existing texture first. In theory this
+ # should not be necessary, but some implementations cause
+ # memory leaks otherwise.
+ new_texture_created = True
+ self.delete()
+ self._create()
+ # Allocate texture on GPU
+ gl.glBindTexture(self._target, self._handle) #self._activate()
+ self._allocate_shape(texLevel)
+ # If not ok, warn (one time)
+ if not gl.glIsTexture(self._handle):
+ self._handle = 0
+ print('Warning enabling texture, the texture is not valid.')
+ return
+ if new_texture_created:
+ # We have a new texture: apply all parameters that were set
+ for param, value in self._texture_params.items():
+ gl.glTexParameter(self._target, param, value)
+ self._pending_params = {} # We just applied all
+
+ # Need to update some data?
+ while texLevel.pending_data:
+ data, clim, offset = texLevel.pending_data.pop(0)
+ # Apply clim and convert data type to one supported by OpenGL
+ data = convert_data(data, clim)
+ # Upload
+ gl.glBindTexture(self._target, self._handle) # self._activate()
+ self._upload_data(data, texLevel, offset)
+
+ # Check
+ #if not gl.glIsTexture(self._handle):
+ # raise TextureError('This should not happen (texture is invalid)')
+
+ # Need to update any parameters?
+ gl.glBindTexture(self._target, self._handle) # self._activate()
+ while self._pending_params:
+ param, value = self._pending_params.popitem()
+ gl.glTexParameter(self._target, param, value)
+
+
+ def _allocate_shape(self, texLevel):
+ """ Allocate space for the current texture object.
+ It should have been verified that the texture will fit.
+ """
+
+ # Get parameters that we need
+ target = self._target
+ shape, format, level = texLevel.shape, texLevel.format, texLevel.level
+
+ # Determine function and target from texType
+ D = { #gl.GL_TEXTURE_1D: (gl.glTexImage1D, 1),
+ gl.GL_TEXTURE_2D: (gl.glTexImage2D, 2),
+ gl.ext.GL_TEXTURE_3D: (gl.ext.glTexImage3D, 3)}
+ uploadFun, ndim = D[target]
+
+ # Determine type
+ gltype = gl.GL_UNSIGNED_BYTE
+
+ # Build args list
+ size = [i for i in reversed( shape[:ndim] )]
+ args = [target, level, format] + size + [0, format, gltype, None]
+
+ # Call
+ uploadFun(*tuple(args))
+
+
+ def _upload_data(self, data, texLevel, offset):
+ """ Upload a texture to the current texture object.
+ It should have been verified that the texture will fit.
+ """
+
+ # Get parameters that we need
+ target = self._target
+ format, level = texLevel.format, texLevel.level
+ alignment = self._get_alignment(data.shape[-1])
+
+ # Determine function and target from texType
+ D = { #gl.GL_TEXTURE_1D: (gl.glTexSubImage1D, 1),
+ gl.GL_TEXTURE_2D: (gl.glTexSubImage2D, 2),
+ gl.ext.GL_TEXTURE_3D: (gl.ext.glTexSubImage3D, 3)}
+ uploadFun, ndim = D[target]
+
+ # Reverse and check offset
+ offset = offset[::-1] #[i for i in offset]
+ assert len(offset) == ndim
+
+ # Determine type
+ thetype = data.dtype.name
+ if thetype not in self.DTYPE2GTYPE: # Note that we convert if necessary
+ raise TextureError("Cannot translate datatype %s to GL." % thetype)
+ gltype = self.DTYPE2GTYPE[thetype]
+
+ # Build args list
+ size = [i for i in reversed( data.shape[:ndim] )]
+ args = [target, level] + offset + size + [format, gltype, data]
+
+ # Check the alignment of the texture
+ if alignment != 4:
+ gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, alignment)
+
+ # Call
+ uploadFun(*tuple(args))
+
+ # Check if we need to reset our pixel store state
+ if alignment != 4:
+ gl.glPixelStorei(gl.GL_UNPACK_ALIGNMENT, 4)
+
+
+ # from pylgy
+ def _get_alignment(self, width):
+ """Determines a textures byte alignment.
+
+ If the width isn't a power of 2
+ we need to adjust the byte alignment of the image.
+ The image height is unimportant
+
+ http://www.opengl.org/wiki/Common_Mistakes#Texture_upload_and_pixel_reads
+ """
+
+ # we know the alignment is appropriate
+ # if we can divide the width by the
+ # alignment cleanly
+ # valid alignments are 1,2,4 and 8
+ # put 4 first, since it's the default
+ alignments = [4,8,2,1]
+ for alignment in alignments:
+ if width % alignment == 0:
+ return alignment
+
+
+
+class Texture2D(Texture):
+ """ Representation of a 2D texture. Inherits :class:`texture.Texture`.
+ """
+ def __init__(self, *args, **kwargs):
+ Texture.__init__(self, gl.GL_TEXTURE_2D, *args, **kwargs)
+
+
+
+class Texture3D(Texture):
+ """ Representation of a 3D texture. Note that for this the
+ GL_texture_3D extension needs to be available.
+ Inherits :class:`texture.Texture`.
+ """
+ def __init__(self, *args, **kwargs):
+ Texture.__init__(self, gl.ext.GL_TEXTURE_3D, *args, **kwargs)
+
+
+
+class TextureCubeMap(Texture):
+ """ Representation of a cube map, to store texture data for the
+ 6 sided of a cube. Used for instance to create environment mappings.
+ Inherits :class:`texture.Texture`.
+
+ This class is not yet implemented.
+ """
+ # Note that width and height for these textures should be equal
+ def __init__(self, *args, **kwargs):
+ raise NotImplementedError()
+ Texture.__init__(self, gl.GL_TEXTURE_CUBE_MAP, *args, **kwargs)
+
+
+
+## Utility functions
+
+
+def get_formats(shape, target):
+ """ Get formats for the texture, based on the target and the shape.
+ If the shape does not match with the texture type, an exception is
+ raised.
+ """
+
+ if target == gl.GL_TEXTURE_2D:
+ if len(shape)==2:
+ return gl.GL_LUMINANCE, gl.GL_ALPHA
+ elif len(shape)==3 and shape[2]==1:
+ return gl.GL_LUMINANCE,
+ elif len(shape)==3 and shape[2]==2:
+ return gl.GL_LUMINANCE_ALPHA,
+ elif len(shape)==3 and shape[2]==3:
+ return gl.GL_RGB,
+ elif len(shape)==3 and shape[2]==4:
+ return gl.GL_RGBA,
+ else:
+ shapestr = 'x'.join([str(i) for i in shape])
+ raise ValueError("Cannot determine format for %s texture from shape %s." %
+ ('2D', shapestr) )
+
+ elif target == gl.ext.GL_TEXTURE_3D:
+ if len(shape)==3:
+ return gl.GL_LUMINANCE, gl.GL_ALPHA
+ elif len(shape)==4 and shape[3]==1:
+ return gl.GL_LUMINANCE,
+ elif len(shape)==4 and shape[3]==2:
+ return gl.GL_LUMINANCE_ALPHA,
+ elif len(shape)==4 and shape[3]==3:
+ return gl.GL_RGB,
+ elif len(shape)==4 and shape[3]==4:
+ return gl.GL_RGBA,
+ else:
+ shapestr = 'x'.join([str(i) for i in shape])
+ raise ValueError("Cannot determine format for %s texture from shape %s." %
+ ('3D', shapestr) )
+
+ else:
+ raise ValueError("Cannot determine format with these dimensions.")
+
+
+
+def convert_data(data, clim=None):
+ """ Convert data to a type that OpenGL can deal with.
+ Also applies contrast limits if given.
+ """
+
+ # Prepare
+ FLOAT32_SUPPORT = ext_available('texture_float')
+ FLOAT16_SUPPORT = ext_available('texture_half_float')
+ CONVERTING = False
+
+ # Determine clim if not given, copy or make float32 if necessary.
+ # Copies may be necessary because following operations are in-place.
+ if data.dtype.name == 'bool':
+ # Bools are ... unsigned ints
+ data = data.astype(np.uint8)
+ clim = None
+ elif data.dtype.name == 'uint8':
+ # Uint8 is what we need! If clim is None, no action required
+ if clim is not None:
+ data = data.astype(np.float32)
+ elif data.dtype.name == 'float16':
+ # Float16 may be allowed. If clim is None, no action is required
+ if clim is not None:
+ data = data.copy()
+ elif not FLOAT16_SUPPORT:
+ CONVERTING = True
+ data = data.copy()
+ elif data.dtype.name == 'float32':
+ # Float32 may be allowed. If clim is None, no action is required
+ if clim is not None:
+ data = data.copy()
+ elif not FLOAT32_SUPPORT:
+ CONVERTING = True
+ data = data.copy()
+ elif 'float' in data.dtype.name:
+ # All other floats are converted with relative ease
+ CONVERTING = True
+ data = data.astype(np.float32)
+ elif data.dtype.name.startswith('int'):
+ # Integers, we need to parse the dtype
+ CONVERTING = True
+ if clim is None:
+ max = 2**int(data.dtype.name[3:])
+ clim = -max//2, max//2-1
+ data = data.astype(np.float32)
+ elif data.dtype.name.startswith('uint'):
+ # Unsigned integers, we need to parse the dtype
+ CONVERTING = True
+ if clim is None:
+ max = 2**int(data.dtype.name[4:])
+ clim = 0, max//2
+ data = data.astype(np.float32)
+ else:
+ raise TextureError('Could not convert data type %s.' % data.dtype.name)
+
+ # Apply limits if necessary
+ if clim is not None:
+ assert isinstance(clim, tuple)
+ assert len(clim) == 2
+ if clim[0] != 0.0:
+ data -= clim[0]
+ if clim[1]-clim[0] != 1.0:
+ data *= 1.0 / (clim[1]-clim[0])
+
+ #if CONVERTING:
+ # print('Warning, converting data.')
+
+ # Convert if necessary
+ if data.dtype == np.uint8:
+ pass # Always possible
+ elif data.dtype == np.float16 and FLOAT16_SUPPORT:
+ pass # Yeah
+ elif data.dtype == np.float32 and FLOAT32_SUPPORT:
+ pass # Yeah
+ elif data.dtype in (np.float16, np.float32):
+ # Arg, convert. Don't forget to clip
+ data *= 256.0
+ data[data<0.0] = 0.0
+ data[data>256.0] = 256.0
+ data = data.astype(np.uint8)
+ else:
+ raise TextureError('Error converting data type. This should not happen.')
+
+ # Done
+ return data
diff --git a/vispy/gloo/variable.py b/vispy/gloo/variable.py
new file mode 100644
index 0000000..f94cba3
--- /dev/null
+++ b/vispy/gloo/variable.py
@@ -0,0 +1,458 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Classes for uniform and attribute variables.
+
+These classes are mainly containers, the only gl functionality is
+the uploading of gl data to the GPU.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import ctypes
+import numpy as np
+
+from . import gl
+from . import GLObject
+from .buffer import ClientVertexBuffer, VertexBuffer, VertexBufferView
+from .texture import Texture, Texture2D, TextureCubeMap, Texture3D
+from vispy.util.six import string_types
+
+# todo: support arrays of uniforms
+
+gl_typeinfo = {
+ gl.GL_FLOAT : ( 1, gl.GL_FLOAT, np.float32),
+ gl.GL_FLOAT_VEC2 : ( 2, gl.GL_FLOAT, np.float32),
+ gl.GL_FLOAT_VEC3 : ( 3, gl.GL_FLOAT, np.float32),
+ gl.GL_FLOAT_VEC4 : ( 4, gl.GL_FLOAT, np.float32),
+ gl.GL_INT : ( 1, gl.GL_INT, np.int32),
+ gl.GL_INT_VEC2 : ( 2, gl.GL_INT, np.int32),
+ gl.GL_INT_VEC3 : ( 3, gl.GL_INT, np.int32),
+ gl.GL_INT_VEC4 : ( 4, gl.GL_INT, np.int32),
+ gl.GL_BOOL : ( 1, gl.GL_BOOL, np.bool),
+ gl.GL_BOOL_VEC2 : ( 2, gl.GL_BOOL, np.bool),
+ gl.GL_BOOL_VEC3 : ( 3, gl.GL_BOOL, np.bool),
+ gl.GL_BOOL_VEC4 : ( 4, gl.GL_BOOL, np.bool),
+ gl.GL_FLOAT_MAT2 : ( 4, gl.GL_FLOAT, np.float32),
+ gl.GL_FLOAT_MAT3 : ( 9, gl.GL_FLOAT, np.float32),
+ gl.GL_FLOAT_MAT4 : (16, gl.GL_FLOAT, np.float32),
+ gl.GL_SAMPLER_2D : ( 1, gl.GL_UNSIGNED_INT, np.uint32),
+ gl.ext.GL_SAMPLER_3D : ( 1, gl.GL_UNSIGNED_INT, np.uint32),
+ gl.GL_SAMPLER_CUBE : ( 1, gl.GL_UNSIGNED_INT, np.uint32), }
+
+
+class VariableError(RuntimeError):
+ """ Raised when something goes wrong that depens on state that was set
+ earlier (due to deferred loading).
+ """
+ pass
+
+
+
+class Variable(object):
+ """
+ A variable is an interface between a program and some data.
+ """
+
+ # NOTE: Variable, Uniform, Attribute are FRIENDS of Program,
+ # and Program manimpulates the private attributes of these objects.
+
+ # ---------------------------------
+ def __init__(self, name, gtype):
+ """ Initialize the data into default state """
+
+ # Make sure variable type is allowed (for ES 2.0 shader)
+ if gtype not in [ gl.GL_FLOAT, gl.GL_FLOAT_VEC2,
+ gl.GL_FLOAT_VEC3, gl.GL_FLOAT_VEC4,
+ gl.GL_INT, gl.GL_BOOL,
+ gl.GL_FLOAT_MAT2, gl.GL_FLOAT_MAT3,
+ gl.GL_FLOAT_MAT4, gl.GL_SAMPLER_2D,
+ gl.GL_SAMPLER_CUBE]:
+ raise ValueError("Unknown variable type")
+
+ # Name of this variable in the program
+ self._name = name
+
+ # GL type and size (i.e. size of the vector)
+ self._gtype = gtype
+ self._size, _, self._dtype = gl_typeinfo[self._gtype]
+
+ # CPU data
+ self._data = None
+
+ # Location of the variable in the program slots
+ self._loc = None
+
+ # Whether an upload is required
+ self._dirty = False
+
+ # To suppress warnings
+ self._show_warning_notset = True
+
+
+ def invalidate(self):
+ """ Set dirty flag, to force setting the variable on the Program
+ object. """
+ self._dirty = True
+
+
+ @property
+ def name(self):
+ """ The name of the variable. """
+ return self._name
+
+ @property
+ def gtype(self):
+ """ The type of the underlying variable (as a GL constant). """
+ return self._gtype
+
+ @property
+ def dtype(self):
+ """ The type of the underlying variable (as a np dtype). """
+ return self._dtype
+
+ @property
+ def size(self):
+ """ The size of the variable (i.e. size of the vector in GLSL). """
+ return self._size
+
+ @property
+ def active(self):
+ """ Whether this variable is active in the program. """
+ return self._loc is not None
+
+
+ @property
+ def data(self):
+ """ The data for this variable (ndarray, VertexBuffer or Texture). """
+ return self._data
+
+
+
+
+# ----------------------------------------------------------- Uniform class ---
+class Uniform(Variable):
+ """ A Uniform represents a program uniform variable. """
+
+ # NOTE: Variable, Uniform, Attribute are FRIENDS of Program,
+ # and Program manimpulates the private attributes of these objects.
+
+ _ufunctions = {
+ gl.GL_FLOAT: (gl.glUniform1fv, 1),
+ gl.GL_FLOAT_VEC2: (gl.glUniform2fv, 2),
+ gl.GL_FLOAT_VEC3: (gl.glUniform3fv, 3),
+ gl.GL_FLOAT_VEC4: (gl.glUniform4fv, 4),
+ gl.GL_INT: (gl.glUniform1iv, 1),
+ gl.GL_INT_VEC2: (gl.glUniform2iv, 2),
+ gl.GL_INT_VEC3: (gl.glUniform3iv, 3),
+ gl.GL_INT_VEC4: (gl.glUniform4iv, 4),
+ gl.GL_BOOL: (gl.glUniform1iv, 1),
+ gl.GL_BOOL_VEC2: (gl.glUniform2iv, 2),
+ gl.GL_BOOL_VEC3: (gl.glUniform3iv, 3),
+ gl.GL_BOOL_VEC4: (gl.glUniform4iv, 4),
+ gl.GL_FLOAT_MAT2: (gl.glUniformMatrix2fv, 4),
+ gl.GL_FLOAT_MAT3: (gl.glUniformMatrix3fv, 9),
+ gl.GL_FLOAT_MAT4: (gl.glUniformMatrix4fv, 16),
+ gl.GL_SAMPLER_2D: (gl.glUniform1i, 1),
+ gl.GL_SAMPLER_CUBE: (gl.glUniform1i, 1),
+ gl.ext.GL_SAMPLER_3D: (gl.glUniform1i, 1),
+ }
+
+
+ def __init__(self, name, gtype):
+ Variable.__init__(self, name, gtype)
+
+ # Get ufunc
+ self._ufunction, self._numel = Uniform._ufunctions[self._gtype]
+
+ # For textures:
+ self._texture_unit = -1 # Set by Program
+ self._textureClass = { gl.GL_SAMPLER_2D: Texture2D,
+ gl.GL_SAMPLER_CUBE: TextureCubeMap,
+ gl.ext.GL_SAMPLER_3D: Texture3D,}.get(gtype, None)
+
+
+ @property
+ def texture_unit(self):
+ """ The texture unit (only valid if this uniform is a sampler/texture.
+ """
+ return self._texture_unit
+
+
+ def set_data(self, data):
+ """ Set data for this uniform. Data can be anything that can be
+ conveted to a numpy array. If the uniform is a sampler, a Texture
+ object is required.
+ """
+
+ if self._gtype in (gl.GL_SAMPLER_2D, gl.GL_SAMPLER_CUBE, gl.ext.GL_SAMPLER_3D):
+ # Textures need special handling
+ if isinstance(data, Texture):
+ self._data = data
+ else:
+ raise ValueError('Expected a Texture for uniform %s.' % self.name)
+ else:
+ # Try to put it inside the array
+ if self._data is None:
+ size, _, dtype = gl_typeinfo[self._gtype]
+ self._data = np.zeros(size, dtype)
+ try:
+ if not isinstance(data, np.ndarray):
+ data = np.array(data)
+ self._data[...] = data.ravel()
+ except ValueError:
+ raise ValueError("Wrong data format for uniform %s" % self.name)
+
+ # Mark variable as dirty
+ self._dirty = True
+
+
+ def upload(self, program):
+ """ Actual upload of data to GPU memory """
+
+ # If there is not data, there is no point in uploading
+ if self._data is None:
+ if self._show_warning_notset:
+ print("Value for uniform '%s' is not set." % self.name)
+ self._show_warning_notset = False
+ return
+
+ # Check active status (mandatory)
+ if self._loc is None:
+ raise VariableError("Uniform is not active")
+
+ # WARNING : Uniform are supposed to keep their value between program
+ # activation/deactivation (from the GL documentation). It has
+ # been tested on some machines but if it is not the case on
+ # every machine, we can expect nasty bugs from these early
+ # returns
+
+ # Matrices (need a transpose argument)
+ if self._gtype in (gl.GL_FLOAT_MAT2, gl.GL_FLOAT_MAT3, gl.GL_FLOAT_MAT4):
+ if not self._dirty:
+ return
+ # OpenGL ES 2.0 does not support transpose
+ transpose = False
+ self._ufunction(self._loc, 1, transpose, self._data)
+ self._dirty = False
+
+ # Textures (need to get texture count)
+ elif self._gtype in (gl.GL_SAMPLER_2D, gl.GL_SAMPLER_CUBE):
+ # Always enable texture
+ texture = self.data
+ unit = self.texture_unit
+ gl.glActiveTexture(gl.GL_TEXTURE0 + unit)
+ program.activate_object(texture)
+ # Upload uniform only of needed
+ if not self._dirty:
+ return
+ gl.glUniform1i(self._loc, unit)
+
+ # Regular uniform
+ else:
+ if not self._dirty:
+ return
+ self._ufunction(self._loc, 1, self._data)
+
+ # Mark as uploaded
+ self._dirty = False
+
+
+
+
+
+# --------------------------------------------------------- Attribute class ---
+class Attribute(Variable):
+ """
+ An Attribute represents a program attribute variable.
+ """
+
+ # NOTE: Variable, Uniform, Attribute are FRIENDS of Program,
+ # and Program manimpulates the private attributes of these objects.
+
+ _afunctions = {
+ gl.GL_FLOAT: gl.glVertexAttrib1f,
+ gl.GL_FLOAT_VEC2: gl.glVertexAttrib2f,
+ gl.GL_FLOAT_VEC3: gl.glVertexAttrib3f,
+ gl.GL_FLOAT_VEC4: gl.glVertexAttrib4f
+ }
+
+
+ def __init__(self, name, gtype):
+ Variable.__init__(self, name, gtype)
+
+ # Count number of vertices
+ self._count = 0
+
+ # Whether this attribure is generic
+ self._generic = False
+
+
+ @property
+ def count(self):
+ """ The number of vertices for this attribute.
+ May be None for generic attributes. """
+ if self._generic or self._data is None:
+ return None
+ else:
+ return self._data.count
+
+
+ def set_data(self, data):
+ """ Set data for this attribute. """
+
+ # No magic conversion to VertexBuffer here. If we want it, we
+ # should do it in Program.__setitem__
+
+ # Data is a tuple with size <= 4, we assume this designates a generate
+ # vertex attribute.
+ if (isinstance(data, (float, int)) or
+ (isinstance(data, (tuple, list)) and len(data) in [1,2,3,4])):
+ # Get dtype, should be float32 for ES 2.0, see issue #9
+ _, _, dtype = gl_typeinfo[self._gtype]
+ if dtype != np.float32:
+ print('Warning: OpenGL ES 2.0 only supports float attributes.')
+ # Let numpy convert the data for us
+ self._data = np.array(data, dtype=dtype)
+ self._data.shape = self._data.size,
+ # Set generic and afunc
+ self._generic = True
+ self._afunction = Attribute._afunctions[self._gtype]
+
+ elif isinstance(data, (ClientVertexBuffer, VertexBuffer)):
+ # Just store the Buffer
+ self._data = data
+ self._generic = False
+ elif isinstance(data, np.ndarray):
+ raise ValueError('Cannot set attribute data using numpy arrays: ' +
+ 'use tuple, ClientVertexBuffer or VertexBuffer instead. ')
+ else:
+ raise ValueError('Wrong data for attribute.')
+
+ # Mark variable as dirty
+ self._dirty = True
+
+
+ def upload(self, program):
+ """ Actual upload of data to GPU memory """
+
+ # If there is not data, there is no point in uploading
+ if self._data is None:
+ if self._show_warning_notset:
+ print("Value for attribute '%s' is not set." % self.name)
+ self._show_warning_notset = False
+ return
+
+ # Check active status (mandatory)
+ if self._loc is None:
+ raise VariableError("Attribute is not active")
+
+ # Note: It has been seen (on my (AK) machine) that attributes
+ # are *not* local to the program object; the splitscreen example
+ # is broken if we use the early exits here.
+
+ # todo: instead of setting dirty to true, remove early exits
+ # (leaving for now for testing on other machines)
+ self._dirty = True
+
+ # Generic vertex attribute (all vertices receive the same value)
+ if self._generic:
+
+ # Tell OpenGL to use the constant value
+ gl.glDisableVertexAttribArray(self._loc)
+
+ # Early exit
+ if not self._dirty:
+ return
+
+ # Apply
+ self._afunction(self._loc, *self._data)
+
+ # Client side array
+ elif isinstance(self._data, ClientVertexBuffer):
+
+ # Tell OpenGL to use the array and not the glVertexAttrib* value
+ gl.glEnableVertexAttribArray(self._loc)
+
+ # Disable any VBO
+ gl.glBindBuffer(gl.GL_ARRAY_BUFFER, 0)
+
+ # Early exit (pointer to CPU-data is still known by Program)
+ if not self._dirty:
+ return
+
+ # Get numpy array from its container
+ data = self._data.data
+
+ # Check attribute format against data format
+ size, gtype, _ = gl_typeinfo[self._gtype]
+ #if self._gtype != self._data._gtype:
+ # raise ValueError("Data not compatible with attribute type")
+ offset = 0
+ stride = self._data.stride
+
+ # Apply (first disable any previous VertexBuffer)
+ gl.glVertexAttribPointer(self._loc, size, gtype, False, stride, data)
+
+ # Regular vertex buffer or vertex buffer view
+ else:
+
+ data = self._data
+ # todo: check offset = -1?
+
+ # Tell OpenGL to use the array and not the glVertexAttrib* value
+ gl.glEnableVertexAttribArray(self._loc)
+
+ # Enable the VBO
+ program.activate_object(data)
+
+ # Early exit
+ if not self._dirty:
+ return
+
+ # Check attribute format against data format
+ size, gtype, _ = gl_typeinfo[self._gtype]
+ #if self._gtype != self._data._gtype:
+ # raise ValueError("Data not compatible with attribute type")
+ offset = self._data.offset
+ stride = self._data.stride
+
+ #size, gtype, dtype = gl_typeinfo[self._gtype]
+ #offset, stride = data._offset, data._stride # view_params not on VertexBuffer
+
+ # Make offset a pointer, or it will be interpreted as a small array
+ offset = ctypes.c_void_p(offset)
+
+ # Apply
+ gl.glVertexAttribPointer(self._loc, size, gtype, False, stride, offset)
+
+ # Mark as uploaded
+ self._dirty = False
+ #print('upload attribute %s' % self.name, self._loc)
+
+
+# -----------------------------------------------------------------------------
+if __name__ == '__main__':
+
+ u = Uniform(0, "color", "vec4")
+ a = Attribute(0, "color", "vec4")
+
+ # Check setting data
+ color = 1,1,1,1
+ u.set_data(color)
+
+ # Check size mismatch
+# color = 0,0,0
+# u.set_data(color)
+
+
+ # Check setting data
+ color = 1,1,1,1
+ a.set_data(color)
+
+ # Check size mismatch
+ color = 0,0,0
+ a.set_data(color)
+
diff --git a/vispy/shaders/__init__.py b/vispy/shaders/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/vispy/shaders/shaders.py b/vispy/shaders/shaders.py
new file mode 100644
index 0000000..b165285
--- /dev/null
+++ b/vispy/shaders/shaders.py
@@ -0,0 +1,393 @@
+from OpenGL.GL import *
+from OpenGL.GL import shaders
+import re
+
+## For centralizing and managing vertex/fragment shader programs.
+
+def initShaders():
+ global Shaders
+ Shaders = [
+ ShaderProgram(None, []),
+
+ ## increases fragment alpha as the normal turns orthogonal to the view
+ ## this is useful for viewing shells that enclose a volume (such as isosurfaces)
+ ShaderProgram('balloon', [
+ VertexShader("""
+ varying vec3 normal;
+ void main() {
+ // compute here for use in fragment shader
+ normal = normalize(gl_NormalMatrix * gl_Normal);
+ gl_FrontColor = gl_Color;
+ gl_BackColor = gl_Color;
+ gl_Position = ftransform();
+ }
+ """),
+ FragmentShader("""
+ varying vec3 normal;
+ void main() {
+ vec4 color = gl_Color;
+ color.w = min(color.w + 2.0 * color.w * pow(normal.x*normal.x + normal.y*normal.y, 5.0), 1.0);
+ gl_FragColor = color;
+ }
+ """)
+ ]),
+
+ ## colors fragments based on face normals relative to view
+ ## This means that the colors will change depending on how the view is rotated
+ ShaderProgram('viewNormalColor', [
+ VertexShader("""
+ varying vec3 normal;
+ void main() {
+ // compute here for use in fragment shader
+ normal = normalize(gl_NormalMatrix * gl_Normal);
+ gl_FrontColor = gl_Color;
+ gl_BackColor = gl_Color;
+ gl_Position = ftransform();
+ }
+ """),
+ FragmentShader("""
+ varying vec3 normal;
+ void main() {
+ vec4 color = gl_Color;
+ color.x = (normal.x + 1.0) * 0.5;
+ color.y = (normal.y + 1.0) * 0.5;
+ color.z = (normal.z + 1.0) * 0.5;
+ gl_FragColor = color;
+ }
+ """)
+ ]),
+
+ ## colors fragments based on absolute face normals.
+ ShaderProgram('normalColor', [
+ VertexShader("""
+ varying vec3 normal;
+ void main() {
+ // compute here for use in fragment shader
+ normal = normalize(gl_Normal);
+ gl_FrontColor = gl_Color;
+ gl_BackColor = gl_Color;
+ gl_Position = ftransform();
+ }
+ """),
+ FragmentShader("""
+ varying vec3 normal;
+ void main() {
+ vec4 color = gl_Color;
+ color.x = (normal.x + 1.0) * 0.5;
+ color.y = (normal.y + 1.0) * 0.5;
+ color.z = (normal.z + 1.0) * 0.5;
+ gl_FragColor = color;
+ }
+ """)
+ ]),
+
+ ## very simple simulation of lighting.
+ ## The light source position is always relative to the camera.
+ ShaderProgram('shaded', [
+ VertexShader("""
+ varying vec3 normal;
+ void main() {
+ // compute here for use in fragment shader
+ normal = normalize(gl_NormalMatrix * gl_Normal);
+ gl_FrontColor = gl_Color;
+ gl_BackColor = gl_Color;
+ gl_Position = ftransform();
+ }
+ """),
+ FragmentShader("""
+ varying vec3 normal;
+ void main() {
+ float p = dot(normal, normalize(vec3(1.0, -1.0, -1.0)));
+ p = p < 0. ? 0. : p * 0.8;
+ vec4 color = gl_Color;
+ color.x = color.x * (0.2 + p);
+ color.y = color.y * (0.2 + p);
+ color.z = color.z * (0.2 + p);
+ gl_FragColor = color;
+ }
+ """)
+ ]),
+
+ ## colors get brighter near edges of object
+ ShaderProgram('edgeHilight', [
+ VertexShader("""
+ varying vec3 normal;
+ void main() {
+ // compute here for use in fragment shader
+ normal = normalize(gl_NormalMatrix * gl_Normal);
+ gl_FrontColor = gl_Color;
+ gl_BackColor = gl_Color;
+ gl_Position = ftransform();
+ }
+ """),
+ FragmentShader("""
+ varying vec3 normal;
+ void main() {
+ vec4 color = gl_Color;
+ float s = pow(normal.x*normal.x + normal.y*normal.y, 2.0);
+ color.x = color.x + s * (1.0-color.x);
+ color.y = color.y + s * (1.0-color.y);
+ color.z = color.z + s * (1.0-color.z);
+ gl_FragColor = color;
+ }
+ """)
+ ]),
+
+ ## colors fragments by z-value.
+ ## This is useful for coloring surface plots by height.
+ ## This shader uses a uniform called "colorMap" to determine how to map the colors:
+ ## red = pow(z * colorMap[0] + colorMap[1], colorMap[2])
+ ## green = pow(z * colorMap[3] + colorMap[4], colorMap[5])
+ ## blue = pow(z * colorMap[6] + colorMap[7], colorMap[8])
+ ## (set the values like this: shader['uniformMap'] = array([...])
+ ShaderProgram('heightColor', [
+ VertexShader("""
+ varying vec4 pos;
+ void main() {
+ gl_FrontColor = gl_Color;
+ gl_BackColor = gl_Color;
+ pos = gl_Vertex;
+ gl_Position = ftransform();
+ }
+ """),
+ FragmentShader("""
+ uniform float colorMap[9];
+ varying vec4 pos;
+ //out vec4 gl_FragColor; // only needed for later glsl versions
+ //in vec4 gl_Color;
+ void main() {
+ vec4 color = gl_Color;
+ color.x = colorMap[0] * (pos.z + colorMap[1]);
+ if (colorMap[2] != 1.0)
+ color.x = pow(color.x, colorMap[2]);
+ color.x = color.x < 0. ? 0. : (color.x > 1. ? 1. : color.x);
+
+ color.y = colorMap[3] * (pos.z + colorMap[4]);
+ if (colorMap[5] != 1.0)
+ color.y = pow(color.y, colorMap[5]);
+ color.y = color.y < 0. ? 0. : (color.y > 1. ? 1. : color.y);
+
+ color.z = colorMap[6] * (pos.z + colorMap[7]);
+ if (colorMap[8] != 1.0)
+ color.z = pow(color.z, colorMap[8]);
+ color.z = color.z < 0. ? 0. : (color.z > 1. ? 1. : color.z);
+
+ color.w = 1.0;
+ gl_FragColor = color;
+ }
+ """),
+ ], uniforms={'colorMap': [1, 1, 1, 1, 0.5, 1, 1, 0, 1]}),
+ ShaderProgram('pointSprite', [ ## allows specifying point size using normal.x
+ ## See:
+ ##
+ ## http://stackoverflow.com/questions/9609423/applying-part-of-a-texture-sprite-sheet-texture-map-to-a-point-sprite-in-ios
+ ## http://stackoverflow.com/questions/3497068/textured-points-in-opengl-es-2-0
+ ##
+ ##
+ VertexShader("""
+ void main() {
+ gl_FrontColor=gl_Color;
+ gl_PointSize = gl_Normal.x;
+ gl_Position = ftransform();
+ }
+ """),
+ #FragmentShader("""
+ ##version 120
+ #uniform sampler2D texture;
+ #void main ( )
+ #{
+ #gl_FragColor = texture2D(texture, gl_PointCoord) * gl_Color;
+ #}
+ #""")
+ ]),
+ ]
+
+
+CompiledShaderPrograms = {}
+
+def getShaderProgram(name):
+ return ShaderProgram.names[name]
+
+class Shader(object):
+ def __init__(self, shaderType, code):
+ self.shaderType = shaderType
+ self.code = code
+ self.compiled = None
+
+ def shader(self):
+ if self.compiled is None:
+ try:
+ self.compiled = shaders.compileShader(self.code, self.shaderType)
+ except RuntimeError as exc:
+ ## Format compile errors a bit more nicely
+ if len(exc.args) == 3:
+ err, code, typ = exc.args
+ if not err.startswith('Shader compile failure'):
+ raise
+ code = code[0].split('\n')
+ err, c, msgs = err.partition(':')
+ err = err + '\n'
+ msgs = msgs.split('\n')
+ errNums = [()] * len(code)
+ for i, msg in enumerate(msgs):
+ msg = msg.strip()
+ if msg == '':
+ continue
+ m = re.match(r'(\d+\:)?\d+\((\d+)\)', msg)
+ if m is not None:
+ line = int(m.groups()[1])
+ errNums[line-1] = errNums[line-1] + (str(i+1),)
+ #code[line-1] = '%d\t%s' % (i+1, code[line-1])
+ err = err + "%d %s\n" % (i+1, msg)
+ errNums = [','.join(n) for n in errNums]
+ maxlen = max(map(len, errNums))
+ code = [errNums[i] + " "*(maxlen-len(errNums[i])) + line for i, line in enumerate(code)]
+ err = err + '\n'.join(code)
+ raise Exception(err)
+ else:
+ raise
+ return self.compiled
+
+class VertexShader(Shader):
+ def __init__(self, code):
+ Shader.__init__(self, GL_VERTEX_SHADER, code)
+
+class FragmentShader(Shader):
+ def __init__(self, code):
+ Shader.__init__(self, GL_FRAGMENT_SHADER, code)
+
+
+
+
+class ShaderProgram(object):
+ names = {}
+
+ def __init__(self, name, shaders, uniforms=None):
+ self.name = name
+ ShaderProgram.names[name] = self
+ self.shaders = shaders
+ self.prog = None
+ self.blockData = {}
+ self.uniformData = {}
+
+ ## parse extra options from the shader definition
+ if uniforms is not None:
+ for k,v in uniforms.items():
+ self[k] = v
+
+ def setBlockData(self, blockName, data):
+ if data is None:
+ del self.blockData[blockName]
+ else:
+ self.blockData[blockName] = data
+
+ def setUniformData(self, uniformName, data):
+ if data is None:
+ del self.uniformData[uniformName]
+ else:
+ self.uniformData[uniformName] = data
+
+ def __setitem__(self, item, val):
+ self.setUniformData(item, val)
+
+ def __delitem__(self, item):
+ self.setUniformData(item, None)
+
+ def program(self):
+ if self.prog is None:
+ try:
+ compiled = [s.shader() for s in self.shaders] ## compile all shaders
+ self.prog = shaders.compileProgram(*compiled) ## compile program
+ except:
+ self.prog = -1
+ raise
+ return self.prog
+
+ def __enter__(self):
+ if len(self.shaders) > 0 and self.program() != -1:
+ glUseProgram(self.program())
+
+ try:
+ ## load uniform values into program
+ for uniformName, data in self.uniformData.items():
+ loc = self.uniform(uniformName)
+ if loc == -1:
+ raise Exception('Could not find uniform variable "%s"' % uniformName)
+ glUniform1fv(loc, len(data), data)
+
+ ### bind buffer data to program blocks
+ #if len(self.blockData) > 0:
+ #bindPoint = 1
+ #for blockName, data in self.blockData.items():
+ ### Program should have a uniform block declared:
+ ###
+ ### layout (std140) uniform blockName {
+ ### vec4 diffuse;
+ ### };
+
+ ### pick any-old binding point. (there are a limited number of these per-program
+ #bindPoint = 1
+
+ ### get the block index for a uniform variable in the shader
+ #blockIndex = glGetUniformBlockIndex(self.program(), blockName)
+
+ ### give the shader block a binding point
+ #glUniformBlockBinding(self.program(), blockIndex, bindPoint)
+
+ ### create a buffer
+ #buf = glGenBuffers(1)
+ #glBindBuffer(GL_UNIFORM_BUFFER, buf)
+ #glBufferData(GL_UNIFORM_BUFFER, size, data, GL_DYNAMIC_DRAW)
+ ### also possible to use glBufferSubData to fill parts of the buffer
+
+ ### bind buffer to the same binding point
+ #glBindBufferBase(GL_UNIFORM_BUFFER, bindPoint, buf)
+ except:
+ glUseProgram(0)
+ raise
+
+
+
+ def __exit__(self, *args):
+ if len(self.shaders) > 0:
+ glUseProgram(0)
+
+ def uniform(self, name):
+ """Return the location integer for a uniform variable in this program"""
+ return glGetUniformLocation(self.program(), name)
+
+ #def uniformBlockInfo(self, blockName):
+ #blockIndex = glGetUniformBlockIndex(self.program(), blockName)
+ #count = glGetActiveUniformBlockiv(self.program(), blockIndex, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS)
+ #indices = []
+ #for i in range(count):
+ #indices.append(glGetActiveUniformBlockiv(self.program(), blockIndex, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES))
+
+class HeightColorShader(ShaderProgram):
+ def __enter__(self):
+ ## Program should have a uniform block declared:
+ ##
+ ## layout (std140) uniform blockName {
+ ## vec4 diffuse;
+ ## vec4 ambient;
+ ## };
+
+ ## pick any-old binding point. (there are a limited number of these per-program
+ bindPoint = 1
+
+ ## get the block index for a uniform variable in the shader
+ blockIndex = glGetUniformBlockIndex(self.program(), "blockName")
+
+ ## give the shader block a binding point
+ glUniformBlockBinding(self.program(), blockIndex, bindPoint)
+
+ ## create a buffer
+ buf = glGenBuffers(1)
+ glBindBuffer(GL_UNIFORM_BUFFER, buf)
+ glBufferData(GL_UNIFORM_BUFFER, size, data, GL_DYNAMIC_DRAW)
+ ## also possible to use glBufferSubData to fill parts of the buffer
+
+ ## bind buffer to the same binding point
+ glBindBufferBase(GL_UNIFORM_BUFFER, bindPoint, buf)
+
+initShaders()
\ No newline at end of file
diff --git a/vispy/shaders/transforms.py b/vispy/shaders/transforms.py
new file mode 100644
index 0000000..39dea11
--- /dev/null
+++ b/vispy/shaders/transforms.py
@@ -0,0 +1,334 @@
+from vispy.gloo import Program, VertexShader, FragmentShader, VertexBuffer
+#from OpenGL.GL import *
+import OpenGL.GL as gl
+import numpy as np
+
+
+class TransformChain(VertexShader):
+ """ Transform shader built from a series of Transform shaders.
+
+ Will collapse adjacent transforms if possible.
+ """
+ def __init__(self, transforms=None, function=None):
+ super(TransformChain, self).__init__()
+ if transforms is None:
+ transforms = []
+ self._transforms = transforms
+ self._enabled = True
+ self._function = function
+
+
+ @property
+ def transforms(self):
+ return self._transforms
+
+ @transforms.setter
+ def transforms(self, tr):
+ if self._enabled:
+ raise RuntimeError("Shader is already enabled; cannot modify.")
+ if not isinstance(tr, list):
+ raise TypeError("Transform chain must be a list")
+ self._transforms = tr
+
+ def append(self, tr):
+ if self._enabled:
+ raise RuntimeError("Shader is already enabled; cannot modify.")
+ self._transforms.append(tr)
+
+ def prepend(self, tr):
+ if self._enabled:
+ raise RuntimeError("Shader is already enabled; cannot modify.")
+ self._transforms.insert(0, tr)
+
+ def _enable(self):
+ self._enabled = True
+ self.set_source(self._generate_source())
+ super(TransformChain, self)._enable()
+
+ def _generate_source(self):
+ transform_indexes = {}
+ variable_decl = []
+ func_calls = []
+ for tr in self._transforms[::-1]:
+ if tr.function not in transform_indexes:
+ ind = 0
+ argtypes = ['vec4'] + [d for a,d,n in tr.arguments]
+ variable_decl.append("vec4 %s(%s);\n" % (tr.function, ", ".join(argtypes)))
+ else:
+ ind = transform_indexes[tr.function]
+ transform_indexes[tr.function] = ind + 1
+ args = []
+ sig_decl = ['vec4']
+ for atype, dtype, name in tr.arguments:
+ varname = '%s_%s_%d' % (tr.function, name, ind)
+ variable_decl.append("%s %s %s;\n" % (atype, dtype, varname))
+ # tell the transform the names of uniforms/atributes that will be passed as arguments.
+ tr._arg_map[name] = varname
+ args.append(varname)
+ sig_decl.append(dtype)
+
+
+ func_calls.append(" pos = %s(pos, %s);\n" % (tr.function, ", ".join(args)))
+
+ source = (
+ "#version 120\n" +
+ "\n" +
+ "".join(variable_decl) +
+ "\n" +
+ "vec4 %s(vec4 pos) {\n" % self._function +
+ "".join(func_calls) +
+ " return pos;\n" +
+ "}\n")
+ #print("====================")
+ #print(source)
+ return source
+
+ def _disable(self):
+ self._enabled = False
+ super(TransformChain, self)._disable()
+
+ def _on_attach(self, program):
+ attached = set()
+ for tr in self.transforms:
+ name = tr.function
+ if name in attached:
+ continue
+ attached.add(name)
+ program.attach_shader(tr)
+
+ def _on_enabling(self, program):
+ super(TransformChain, self)._on_enabling(program)
+ for tr in self.transforms:
+ tr._apply_variables(program)
+
+class Transform(VertexShader):
+ """ Generic template class for vertex transformation shaders
+
+ All Transform classes perform a different type of transformation,
+ and include both GLSL and python code for performing the forward
+ and reverse mappings.
+
+ In general, transformations should only ever be done using the
+ map() and imap() methods. In some cases, imap() may return None.
+ """
+ source = None # Default source code for this shader.
+ function = None # The name of the mapping function as defined in the shader source.
+ # By default, this is set to ClassName_map
+ arguments = [] # List of arguments accepted by the mapping function.
+ # The format is (uniform|attribute, type, name)
+
+ def __init__(self, source=None):
+ if source is None:
+ source = self.__class__.source
+ self._arg_map = {} # {argument_name: attribute/uniform_name} set by TransformChain
+ super(Transform, self).__init__(source)
+
+ def map(self, coords):
+ pass
+
+ def imap(self, coords):
+ pass
+
+ def __mul__(self, tr):
+ #return TransformChain([self, tr])
+ return NotImplemented
+
+ def __apply_variables(self, program):
+ # Send uniforms/attributes for this transform to currently-enabled program, if any.
+ pass
+
+
+class NullTransform(Transform):
+ """ Transform having no effect on coordinates.
+ """
+ source = """
+ #version 120
+
+ vec4 NullTransform_map(vec4 pos) {
+ return pos;
+ }
+ """
+ function = 'NullTransform_map'
+
+
+
+class STTransform(Transform):
+ """ Transform perfoming only scale and translate
+ """
+ source = """
+ #version 120
+
+ vec4 STTransform_map(vec4 pos, vec3 scale, vec3 translate) {
+ return (pos * vec4(scale, 1)) + vec4(translate, 0);
+ }
+ """
+ function = 'STTransform_map'
+ arguments = [
+ ('uniform', 'vec3', 'scale'),
+ ('uniform', 'vec3', 'translate'),
+ ]
+
+ def __init__(self, scale=None, translate=None):
+ super(STTransform, self).__init__()
+
+ self._scale = np.ones(3, dtype=np.float32)
+ self._translate = np.zeros(3, dtype=np.float32)
+
+ self.scale = (1.0, 1.0, 1.0) if scale is None else scale
+ self.translate = (0.0, 0.0, 0.0) if translate is None else translate
+
+ def map(self, coords):
+ n = coords.shape[-1]
+ return coords * self.scale[:n] + self.translate[:n]
+
+ def imap(self, coords):
+ n = coords.shape[-1]
+ return (coords - self.translate[:n]) / self.scale[:n]
+
+ @property
+ def scale(self):
+ return self._scale.copy()
+
+ @scale.setter
+ def scale(self, s):
+ self._scale[:len(s)] = s
+ self._scale[len(s):] = 1.0
+ #self._update()
+
+ @property
+ def translate(self):
+ return self._translate.copy()
+
+ @translate.setter
+ def translate(self, t):
+ self._translate[:len(t)] = t
+ self._translate[len(t):] = 0.0
+
+ def _apply_variables(self, program):
+ # Send uniforms to currently-enabled program, if any.
+ program.uniforms[self._arg_map['scale']] = self.scale
+ program.uniforms[self._arg_map['translate']] = self.translate
+
+ def as_affine(self):
+ m = AffineTransform()
+ m.scale(self.scale)
+ m.translate(self.translate)
+ return m
+
+ def __mul__(self, tr):
+ if isinstance(tr, STTransform):
+ s = self.scale * tr.scale
+ t = self.translate + (tr.translate * self.scale)
+ return STTransform(scale=s, translate=t)
+ elif isinstance(tr, AffineTransform):
+ return self.as_affine() * tr
+ else:
+ return NotImplemented
+
+ def __repr__(self):
+ return "<STTransform scale=%s translate=%s>" % (self.scale, self.translate)
+
+class AffineTransform(Transform):
+ def __init__(self):
+ self.matrix = np.eye(4)
+ self.inverse = None
+ Transform.__init__(self, """
+ #version 120
+
+ uniform mat4 transform;
+
+ vec4 global_transform(vec4 pos) {
+ return transform * pos;
+ }
+ """)
+
+ def map(self, coords):
+ return np.dot(self.matrix, coords)
+
+ def imap(self, coords):
+ if self.inverse is None:
+ self.inverse = np.linalg.invert(self.matrix)
+ return np.dot(self.inverse, coords)
+
+
+class SRTTransform(Transform):
+ """ Transform performing scale, rotate, and translate
+ """
+
+class ProjectionTransform(Transform):
+ @classmethod
+ def frustum(cls, l, r, t, b, n, f):
+ pass
+
+class LogTransform(Transform):
+ """ Transform perfoming logarithmic transformation on three axes.
+ """
+ source = """
+ #version 120
+
+ vec4 LogTransform_map(vec4 pos, vec3 base) {
+ vec4 p1 = pos;
+ if(base.x > 1.0)
+ p1.x = log(p1.x) / log(base.x);
+ if(base.y > 1.0)
+ p1.y = log(p1.y) / log(base.y);
+ if(base.z > 1.0)
+ p1.z = log(p1.z) / log(base.z);
+ return p1;
+ }
+ """
+ function = 'LogTransform_map'
+ arguments = [
+ ('uniform', 'vec3', 'base'),
+ ]
+
+ def __init__(self, base=None):
+ super(LogTransform, self).__init__()
+ self._base = np.zeros(3, dtype=np.float32)
+ self.base = (0.0, 0.0, 0.0) if base is None else base
+
+ def map(self, coords):
+ ret = np.empty(coords.shape, coords.dtype)
+ base = self.base
+ for i in range(ret.shape[-1]):
+ if base[i] > 1.0:
+ ret[...,i] = np.log(coords[...,i]) / np.log(base[i])
+ else:
+ ret[...,i] = coords[...,i]
+ return ret
+
+ def imap(self, coords):
+ ret = np.empty(coords.shape, coords.dtype)
+ base = self.base
+ for i in range(ret.shape[-1]):
+ if base[i] > 1.0:
+ ret[...,i] = base[i] ** coords[...,i]
+ else:
+ ret[...,i] = coords[...,i]
+ return ret
+
+ @property
+ def base(self):
+ return self._base.copy()
+
+ @base.setter
+ def base(self, s):
+ self._base[:len(s)] = s
+ self._base[len(s):] = 0.0
+
+ def _apply_variables(self, program):
+ # Send uniforms to currently-enabled program, if any.
+ program.uniforms[self._arg_map['base']] = self.base
+
+ def __repr__(self):
+ return "<LogTransform base=%s>" % (self.base)
+
+class PolarTransform(Transform):
+ pass
+
+class BilinearTransform(Transform):
+ pass
+
+class WarpTransform(Transform):
+ """ Multiple bilinear transforms in a grid arrangement.
+ """
diff --git a/vispy/util/__init__.py b/vispy/util/__init__.py
new file mode 100644
index 0000000..a7ef253
--- /dev/null
+++ b/vispy/util/__init__.py
@@ -0,0 +1,11 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team. All Rights Reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Utilities for Vispy. A collection of modules that are used in
+one or more Vispy sub-packages.
+"""
+
+from vispy.util.six import string_types
+
+def is_string(s): return isinstance(s, string_types)
diff --git a/vispy/util/color.py b/vispy/util/color.py
new file mode 100644
index 0000000..12eec53
--- /dev/null
+++ b/vispy/util/color.py
@@ -0,0 +1,5 @@
+"""
+Functions for handling color values
+ - conversion between colorspaces (0.0-1.0 vs 0-255; RGB/RGBA/HSV; etc.)
+ - define shorthand for specifying colors (single letters, short names, etc)
+"""
diff --git a/vispy/util/dataio/__init__.py b/vispy/util/dataio/__init__.py
new file mode 100644
index 0000000..6d0605b
--- /dev/null
+++ b/vispy/util/dataio/__init__.py
@@ -0,0 +1,132 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Reading and writing of data like images and meshes.
+"""
+
+import os
+import bz2
+import numpy as np
+
+THISDIR = os.path.dirname(os.path.abspath(__file__))
+DATA_DIR = os.path.join(os.path.dirname(THISDIR), '../data')
+
+
+# So we can demo image data without needing an image reading library
+def crate():
+ """ Return an image of a crate (256x256 RGB).
+ """
+ with open(os.path.join(DATA_DIR, 'crate.bz2'), 'rb') as f:
+ bb = f.read()
+ a = np.frombuffer(bz2.decompress(bb), np.uint8)
+ a.shape = 256, 256, 3
+ return a
+
+
+# def _write_image_blob(im, fname):
+# bb = bz2.compress(im.tostring())
+# with open(os.path.join(DATA_DIR, fname), 'wb') as f:
+# f.write(bb)
+
+
+
+def read_mesh(fname, format=None):
+ """ Read mesh data from file.
+ returns (vertices, faces, normals, texcoords)
+ texcoords and faces may be None.
+
+ Mesh files that ship with vispy always work: 'triceratops.obj'.
+ """
+ # Check file
+ if not os.path.isfile(fname):
+ # Maybe we have it?
+ fname_ = os.path.join(DATA_DIR, fname)
+ if os.path.isfile(fname_):
+ fname = fname_
+ else:
+ raise ValueError('File does not exist: %s' % fname)
+
+ # Check format
+ if format is None:
+ format = os.path.splitext(fname)[1]
+ format = format.strip('. ').upper()
+
+ if format == 'OBJ':
+ from .wavefront import WavefrontReader
+ return WavefrontReader.read(fname)
+ elif not format:
+ raise ValueError('read_mesh needs could not determine format.')
+ else:
+ raise ValueError('read_mesh does not understand format %s.' % format)
+
+
+def imread(filename, format=None):
+ """ Function to read image data. Requires imageio or PIL.
+ """
+ # Import imageio or PIL
+ imageio = PIL = None
+ try:
+ import imageio
+ except ImportError:
+ try:
+ import PIL.Image
+ except ImportError:
+ pass
+
+ if imageio is not None:
+ return imageio.imread(filename, format)
+ elif PIL is not None:
+ im = PIL.Image.open(filename)
+ if im.mode == 'P':
+ im = im.convert()
+ # Make numpy array
+ a = np.asarray(im)
+ if len(a.shape)==0:
+ raise MemoryError("Too little memory to convert PIL image to array")
+ else:
+ raise RuntimeError("imread requires the imageio or PIL package.")
+
+
+def imsave(filename, im, format=None):
+ """ Function to save image data. Requires imageio or PIL.
+ """
+ # Import imageio or PIL
+ imageio = PIL = None
+ try:
+ import imageio
+ except ImportError:
+ try:
+ import PIL.Image
+ except ImportError:
+ pass
+
+ if imageio is not None:
+ return imageio.imsave(filename, im, format)
+ elif PIL is not None:
+ pim = PIL.Image.fromarray(im)
+ pim.save(filename, format)
+ else:
+ raise RuntimeError("imsave requires the imageio or PIL package.")
+
+
+
+def _screenshot(viewport=None):
+ """ Take a screenshot using glReadPixels. Not sure where to put this
+ yet, so a private function for now. Used in make.py.
+ """
+ import numpy as np
+ from vispy.gloo import gl
+ #gl.glReadBuffer(gl.GL_BACK) Not avaliable in ES 2.0
+ if viewport is None:
+ viewport = gl.glGetIntegerv(gl.GL_VIEWPORT)
+ x,y,w,h = viewport
+ gl.glPixelStorei(gl.GL_PACK_ALIGNMENT, 1) # PACK, not UNPACK
+ im = gl.glReadPixels(x, y, w, h, gl.GL_RGB, gl.GL_UNSIGNED_BYTE)
+ gl.glPixelStorei(gl.GL_PACK_ALIGNMENT, 4)
+ # reshape, flip, and return
+ if not isinstance(im, np.ndarray):
+ im = np.frombuffer(im, np.uint8)
+ im.shape = h,w,3
+ im = np.flipud(im)
+ return im
diff --git a/vispy/util/dataio/wavefront.py b/vispy/util/dataio/wavefront.py
new file mode 100644
index 0000000..6b206da
--- /dev/null
+++ b/vispy/util/dataio/wavefront.py
@@ -0,0 +1,365 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+# This module was taken from visvis
+"""
+This module produces functionality to read and write wavefront (.OBJ) files.
+
+http://en.wikipedia.org/wiki/Wavefront_.obj_file
+
+The wavefront format is quite powerfull and allows a wide variety of surfaces
+to be described.
+
+This implementation does only supports mesh stuff, so no nurbs etc. Further,
+material properties are ignored, although this might be implemented later,
+
+The classes are written with compatibility of Python3 in mind.
+
+"""
+
+import time
+import numpy as np
+
+
+
+class WavefrontReader(object):
+
+ def __init__(self, f):
+ self._f = f
+
+ # Original vertices, normals and texture coords.
+ # These are not necessarily of the same length.
+ self._v = []
+ self._vn = []
+ self._vt = []
+
+ # Final vertices, normals and texture coords.
+ # All three lists are of the same length, as opengl wants it.
+ self._vertices = []
+ self._normals = []
+ self._texcords = []
+
+ # The faces, indices to vertex/normal/texcords arrays.
+ self._faces = []
+
+ # Dictionary to keep track of processed face data, so we can
+ # convert the original v/vn/vn to the final vertices/normals/texcords.
+ self._facemap = {}
+
+
+ @classmethod
+ def read(cls, fname, check='ignored'):
+ """ read(fname)
+
+ This classmethod is the entry point for reading OBJ files.
+
+ Parameters
+ ----------
+ fname : string
+ The name of the file to read.
+
+ """
+
+ t0 = time.time()
+
+ # Open file
+ f = open(fname, 'rb')
+ try:
+ reader = WavefrontReader(f)
+ while True:
+ reader.readLine()
+ except EOFError:
+ pass
+ finally:
+ f.close()
+
+ # Done
+ mesh = reader.finish()
+ #print('reading mesh took ' + str(time.time()-t0) + ' seconds')
+ return mesh
+
+
+ def readLine(self):
+ """ The method that reads a line and processes it.
+ """
+
+ # Read line
+ line = self._f.readline().decode('ascii', 'ignore')
+ if not line:
+ raise EOFError()
+ line = line.strip()
+
+ if line.startswith('v '):
+ #self._vertices.append( *self.readTuple(line) )
+ self._v.append( self.readTuple(line) )
+ elif line.startswith('vt '):
+ self._vt.append( self.readTuple(line, 3) )
+ elif line.startswith('vn '):
+ self._vn.append( self.readTuple(line) )
+ elif line.startswith('f '):
+ self._faces.append( self.readFace(line) )
+ elif line.startswith('#'):
+ pass # Comment
+ elif line.startswith('mtllib '):
+ print('Notice reading .OBJ: material properties are ignored.')
+ elif line.startswith('g ') or line.startswith('s '):
+ pass # Ignore groups and smoothing groups
+ elif line.startswith('o '):
+ pass # Ignore object names
+ elif line.startswith('usemtl '):
+ pass # Ignore material
+ elif not line.strip():
+ pass
+ else:
+ print('Notice reading .OBJ: ignoring %s command.' % line.strip())
+
+
+ def readTuple(self, line, n=3):
+ """ Reads a tuple of numbers. e.g. vertices, normals or teture coords.
+ """
+ numbers = [num for num in line.split(' ') if num]
+ return [float(num) for num in numbers[1:n+1]]
+
+
+ def readFace(self, line):
+ """ Each face consists of three or more sets of indices. Each set
+ consists of 1, 2 or 3 indices to vertices/normals/texcords.
+ """
+
+ # Get parts (skip first)
+ indexSets = [num for num in line.split(' ') if num][1:]
+
+ final_face = []
+ for indexSet in indexSets:
+
+ # Did we see this exact index earlier? If so, it's easy
+ final_index = self._facemap.get(indexSet)
+ if final_index is not None:
+ final_face.append(final_index)
+ continue
+
+ # If not, we need to sync the vertices/normals/texcords ...
+
+ # Get and store final index
+ final_index = len(self._vertices)
+ final_face.append(final_index)
+ self._facemap[indexSet] = final_index
+
+ # What indices were given?
+ indices = [i for i in indexSet.split('/')]
+
+ # Store new set of vertex/normal/texcords.
+ # If there is a single face that does not specify the texcord
+ # index, the texcords are ignored. Likewise for the normals.
+ if True:
+ vertex_index = self._absint(indices[0], len(self._v))
+ self._vertices.append( self._v[vertex_index] )
+ if self._texcords is not None:
+ if len(indices) > 1 and indices[1]:
+ texcord_index = self._absint(indices[1], len(self._vt))
+ self._texcords.append( self._vt[texcord_index] )
+ else:
+ if self._texcords:
+ print('Warning reading OBJ: ignoring texture coordinates because it is not specified for all faces.')
+ self._texcords = None
+ if self._normals is not None:
+ if len(indices) > 2 and indices[2]:
+ normal_index = self._absint(indices[2], len(self._vn))
+ self._normals.append( self._vn[normal_index] )
+ else:
+ if self._normals:
+ print('Warning reading OBJ: ignoring normals because it is not specified for all faces.')
+ self._normals = None
+
+ # Check face
+ if self._faces and len(self._faces[0]) != len(final_face):
+ raise RuntimeError('Vispy requires that all faces are either triangles or quads.')
+
+ # Done
+ return final_face
+
+
+ def _absint(self, i, ref):
+ i = int(i)
+ if i>0 :
+ return i-1
+ else:
+ return ref+i
+
+
+ def _calculate_normals(self):
+ vertices, faces = self._vertices, self._faces
+ if faces is None:
+ faces = np.arange(0, vertices.size, dtype=np.uint32)
+ # Build normals
+ T = vertices[faces]
+ N = np.cross(T[::,1 ]-T[::,0], T[::,2]-T[::,0])
+ L = np.sqrt(N[:,0]**2+N[:,1]**2+N[:,2]**2)
+ N /= L[:, np.newaxis]
+ normals = np.zeros(vertices.shape)
+ normals[faces[:,0]] += N
+ normals[faces[:,1]] += N
+ normals[faces[:,2]] += N
+ L = np.sqrt(normals[:,0]**2+normals[:,1]**2+normals[:,2]**2)
+ normals /= L[:, np.newaxis]
+ return normals
+
+
+ def finish(self):
+ """ Converts gathere lists to numpy arrays and creates
+ BaseMesh instance.
+ """
+ if True:
+ self._vertices = np.array(self._vertices, 'float32')
+ if self._faces:
+ self._faces = np.array(self._faces, 'uint32')
+ else:
+ # Use vertices only
+ self._vertices = np.array(self._v, 'float32')
+ self._faces = None
+ if self._normals:
+ self._normals = np.array(self._normals, 'float32')
+ else:
+ self._normals = self._calculate_normals()
+ if self._texcords:
+ self._texcords = np.array(self._texcords, 'float32')
+ else:
+ self._texcords = None
+
+ return self._vertices, self._faces, self._normals, self._texcords
+
+
+
+class WavefrontWriter(object):
+
+ def __init__(self, f):
+ self._f = f
+
+
+ @classmethod
+ def write(cls, fname, vertices, faces, normals, texcoords, name=''):
+ """ This classmethod is the entry point for writing mesh data to OBJ.
+
+ Parameters
+ ----------
+ fname : string
+ The filename to write to.
+ vertices : numpy array
+ The vertex data
+ faces : numpy array
+ The face data
+ texcoords : numpy array
+ The texture coordinate per vertex
+ name : string
+ The name of the object (e.g. 'teapot')
+
+ """
+
+ # Open file
+ f = open(fname, 'wb')
+ try:
+ writer = WavefrontWriter(f)
+ writer.writeMesh(vertices, faces, normals, texcoords, name)
+ except EOFError:
+ pass
+ finally:
+ f.close()
+
+
+ def writeLine(self, text):
+ """ Simple writeLine function to write a line of code to the file.
+ The encoding is done here, and a newline character is added.
+ """
+ text += '\n'
+ self._f.write(text.encode('ascii'))
+
+
+ def writeTuple(self, val, what):
+ """ Writes a tuple of numbers (on one line).
+ """
+ # Limit to three values. so RGBA data drops the alpha channel
+ # Format can handle up to 3 texcords
+ val = val[:3]
+ # Make string
+ val = ' '.join([str(v) for v in val])
+ # Write line
+ self.writeLine('%s %s' % (what, val))
+
+
+ def writeFace(self, val, what='f'):
+ """ Write the face info to the net line.
+ """
+ # OBJ counts from 1
+ val = [v+1 for v in val]
+ # Make string
+ if self._hasValues and self._hasNormals:
+ val = ' '.join(['%i/%i/%i' % (v,v,v) for v in val])
+ elif self._hasNormals:
+ val = ' '.join(['%i//%i' % (v,v) for v in val])
+ elif self._hasValues:
+ val = ' '.join(['%i/%i' % (v,v) for v in val])
+ else:
+ val = ' '.join(['%i' % v for v in val])
+ # Write line
+ self.writeLine('%s %s' % (what, val))
+
+
+ def writeMesh(self, vertices, faces, normals, values, name=''):
+ """ Write the given mesh instance.
+ """
+
+ # Store properties
+ self._hasNormals = normals is not None
+ self._hasValues = values is not None
+ self._hasFaces = faces is not None
+
+ # Get faces and number of vertices
+ if faces is None:
+ faces = np.arange(len(vertices))
+
+ # Reshape faces
+ Nfaces = faces.size / 3
+ faces = faces.reshape((Nfaces, 3))
+
+ # Number of vertices
+ N = vertices.shape[0]
+
+ # Get string with stats
+ stats = []
+ stats.append('%i vertices' % N)
+ if self._hasValues:
+ stats.append('%i texcords' % N)
+ else:
+ stats.append('no texcords')
+ if self._hasNormals:
+ stats.append('%i normals' % N)
+ else:
+ stats.append('no normals')
+ stats.append('%i faces' % faces.shape[0])
+
+
+ # Write header
+ self.writeLine('# Wavefront OBJ file')
+ self.writeLine('# Created by vispy.')
+ self.writeLine('#')
+ if name:
+ self.writeLine('# object %s' % name)
+ else:
+ self.writeLine('# unnamed object')
+ self.writeLine('# %s' % ', '.join(stats))
+ self.writeLine('')
+
+ # Write data
+ if True:
+ for i in range(N):
+ self.writeTuple(vertices[i], 'v')
+ if self._hasNormals:
+ for i in range(N):
+ self.writeTuple(_normals[i], 'vn')
+ if self._hasValues:
+ for i in range(N):
+ self.writeTuple(values[i], 'vt')
+ if True:
+ for i in range(faces.shape[0]):
+ self.writeFace(faces[i])
diff --git a/vispy/util/event.py b/vispy/util/event.py
new file mode 100644
index 0000000..d454195
--- /dev/null
+++ b/vispy/util/event.py
@@ -0,0 +1,543 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+The event modules implements the classes that make up the event system.
+The Event class and its subclasses are used to represent "stuff that happens".
+The EventEmitter class provides an interface to connect to events and
+to emit events. The EmitterGroup groups EventEmitter objects.
+
+For more information see http://github.com/vispy/vispy/wiki/API_Events
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+if sys.version_info < (2, 7):
+ from vispy.util.ordereddict import OrderedDict
+else:
+ from collections import OrderedDict
+import inspect
+import weakref
+import vispy
+
+
+
+class Event(object):
+ """Class describing events that occur and can be reacted to with callbacks.
+ Each event instance contains information about a single event that has
+ occurred such as a key press, mouse motion, timer activation, etc.
+
+ Subclasses: :class:`KeyEvent`, :class:`MouseEvent`, :class:`TouchEvent`,
+ :class:`StylusEvent`
+
+ The creation of events and passing of events to the appropriate callback
+ functions in the responsibility of :class:`EventEmitter` instances.
+
+ Note that each event object has an attribute for each of the input
+ arguments listed below.
+
+ Input arguments
+ ---------------
+ type : str
+ String indicating the event type (e.g. mouse_press, key_release)
+ native : object (optional)
+ The native GUI event object
+ **kwds : keyword arguments
+ All extra keyword arguments become attributes of the event object.
+
+ """
+ def __init__(self, type, native=None, **kwds):
+ # stack of all sources this event has been emitted through
+ self._sources = []
+ self._handled = False
+ self._blocked = False
+ # Store args
+ self._type = type
+ self._native = native
+ for k,v in kwds.items():
+ setattr(self, k, v)
+
+ @property
+ def source(self):
+ """ The object that the event applies to (i.e. the source of the event).
+ """
+ return self._sources[-1] if self._sources else None
+
+ @property
+ def sources(self):
+ """ List of objects that the event applies to (i.e. are or have
+ been a source of the event). Can contain multiple objects in case
+ the event traverses a hierarchy of objects.
+ """
+ return self._sources
+
+ def _push_source(self, source):
+ self._sources.append(source)
+
+ def _pop_source(self):
+ return self._sources.pop()
+
+ @property
+ def type(self):
+ # No docstring; documeted in class docstring
+ return self._type
+
+ @property
+ def native(self):
+ # No docstring; documeted in class docstring
+ return self._native
+
+ @property
+ def handled(self):
+ """This boolean property indicates whether the event has already been
+ acted on by an event handler. Since many handlers may have access to the
+ same events, it is recommended that each check whether the event has
+ already been handled as well as set handled=True if it decides to
+ act on the event.
+ """
+ return self._handled
+
+ @handled.setter
+ def handled(self, val):
+ self._handled = bool(val)
+
+ @property
+ def blocked(self):
+ """This boolean property indicates whether the event will be delivered
+ to event callbacks. If it is set to True, then no further callbacks
+ will receive the event. When possible, it is recommended to use
+ Event.handled rather than Event.blocked.
+ """
+ return self._blocked
+
+ @blocked.setter
+ def blocked(self, val):
+ self._blocked = bool(val)
+
+ def __repr__(self):
+ # Try to generate a nice string representation of the event that
+ # includes the interesting properties.
+ global _event_repr_depth # need to keep track of depth because it is
+ # very difficult to avoid excessive recursion.
+ _event_repr_depth += 1
+ try:
+ if _event_repr_depth > 2:
+ return "<...>"
+ attrs = []
+ for name in dir(self):
+ if name.startswith('_'):
+ continue
+ # select only properties
+ if not hasattr(type(self), name) or not isinstance(getattr(type(self), name), property):
+ continue
+ attr = getattr(self, name)
+
+ attrs.append("%s=%s" % (name, attr))
+ return "<%s %s>" % (self.__class__.__name__, " ".join(attrs))
+ finally:
+ _event_repr_depth -= 1
+
+_event_repr_depth = 0
+
+class EventEmitter(object):
+ """Encapsulates a list of event callbacks.
+
+ Each instance of EventEmitter represents the source of a stream of similar
+ events, such as mouse click events or timer activation events. For
+ example, the following diagram shows the propagation of a mouse click
+ event to the list of callbacks that are registered to listen for that event::
+
+
+ User clicks |Canvas creates |Canvas invokes its |EventEmitter invokes
+ mouse on |MouseEvent: |'mouse_press' EventEmitter: |callbacks in sequence:
+ Canvas | | |
+ -->|event = MouseEvent(...) -->|Canvas.events.mouse_press(event) -->|callback1(event)
+ | | -->|callback2(event)
+ | | -->|callback3(event)
+
+ Callback functions may be added or removed from an EventEmitter using
+ :func:`connect() <vispy.event.EventEmitter.connect>` or
+ :func:`disconnect() <vispy.event.EventEmitter.disconnect>`.
+
+ Calling an instance of EventEmitter will cause each of its callbacks
+ to be invoked in sequence. All callbacks are invoked with a single
+ argument which will be an instance of :class:`Event <vispy.event.Event>`.
+
+ EventEmitters are generally created by an EmitterGroup instance.
+
+ Input arguments
+ ---------------
+ source : object
+ The object that the generated events apply to. All emitted Events will
+ have their .source property set to this value.
+ type : str or None
+ String indicating the event type (e.g. mouse_press, key_release)
+ event_class : subclass of Event
+ The class of events that this emitter will generate.
+
+
+ Attributes
+ ----------
+
+ ignore_callback_errors : bool
+ If True, exceptions raised while invoking callbacks will be caught by
+ the emitter, allowing it to continue invoking other callbacks.
+ print_callback_errors : bool
+ If True, the emitter prints a message and stack trace whenever a
+ callback raises an exception. (assumes ignore_callback_errors=True)
+
+ """
+ def __init__(self, source=None, type=None, event_class=Event):
+ self.callbacks = []
+ self.blocked = 0
+ self._emitting = False # used to detect emitter loops
+ self.source = source
+ self.default_args = {}
+ if type is not None:
+ self.default_args['type'] = type
+
+ assert inspect.isclass(event_class)
+ self.event_class = event_class
+
+ self.ignore_callback_errors = True
+ self.print_callback_errors = True
+
+ @property
+ def source(self):
+ """ The object that events generated by this emitter apply to.
+ """
+ return None if self._source is None else self._source() # get object behind weakref
+
+ @source.setter
+ def source(self, s):
+ if s is None:
+ self._source = None
+ else:
+ self._source = weakref.ref(s)
+
+ def connect(self, callback):
+ """Connect this emitter to a new callback.
+
+ *callback* may be either a callable object or a tuple
+ (object, attr_name) where object.attr_name will point to a callable
+ object.
+
+ If the callback is already connected, then the request is ignored.
+
+ The new callback will be added to the beginning of the callback list;
+ thus the callback that is connected _last_ will be the _first_ to
+ receive events from the emitter.
+ """
+ if callback in self.callbacks:
+ return
+ self.callbacks.insert(0, callback)
+ return callback ## allows connect to be used as a decorator
+
+ def disconnect(self, callback=None):
+ """Disconnect a callback from this emitter.
+
+ If no callback is specified, then _all_ callbacks are removed.
+ If the callback was not already connected, then the call does nothing.
+ """
+ if callback is None:
+ self.callbacks = []
+ else:
+ try:
+ self.callbacks.remove(callback)
+ except ValueError:
+ pass
+
+ def __call__(self, *args, **kwds):
+ """ __call__(**kwds)
+ Invoke all callbacks for this emitter.
+
+ Emit a new event object, created with the given keyword
+ arguments, which must match with the input arguments of the
+ corresponding event class. Note that the 'type' argument is
+ filled in by the emitter.
+
+ Alternatively, the emitter can also be called with an Event
+ instance as the only argument. In this case, the specified
+ Event will be used rather than generating a new one. This allows
+ customized Event instances to be emitted and also allows EventEmitters
+ to be chained by connecting one directly to another.
+
+ Note that the same Event instance is sent to all callbacks.
+ This allows some level of communication between the callbacks
+ (notably, via Event.handled) but also requires that callbacks
+ be careful not to inadvertently modify the Event.
+ """
+ if self._emitting:
+ raise RuntimeError('EventEmitter loop detected!')
+
+ # create / massage event as needed
+ event = self._prepare_event(*args, **kwds)
+
+ # Add our source to the event; remove it after all callbacks have been invoked.
+ event._push_source(self.source)
+ self._emitting = True
+ try:
+ if self.blocked > 0:
+ return event
+
+ for cb in self.callbacks:
+ if isinstance(cb, tuple):
+ cb = getattr(cb[0], cb[1], None)
+ if cb is None:
+ continue
+
+ try:
+ cb(event)
+ except:
+ # get traceback and store (so we can do postmortem debugging)
+ type, value, tb = sys.exc_info()
+ tb = tb.tb_next # Skip *this* frame
+ sys.last_type = type
+ sys.last_value = value
+ sys.last_traceback = tb
+ # Handle
+ if self.ignore_callback_errors:
+ if self.print_callback_errors:
+ sys.excepthook(type, value, tb)
+ print("Error invoking callback for event: %s" % str(event))
+ else:
+ raise
+
+ if event.blocked:
+ break
+ finally:
+ self._emitting = False
+ if event._pop_source() != self.source:
+ raise RuntimeError("Event source-stack mismatch.")
+
+ return event
+
+ def _prepare_event(self, *args, **kwds):
+ ## When emitting, this method is called to create or otherwise alter
+ ## an event before it is sent to callbacks. Subclasses may extend
+ ## this method to make custom modifications to the event.
+ if len(args) == 1 and not kwds and isinstance(args[0], Event):
+ event = args[0]
+ # Ensure that the given event matches what we want to emit
+ assert isinstance(event, self.event_class)
+ elif not args:
+ args = self.default_args.copy()
+ args.update(kwds)
+ event = self.event_class(**args)
+ else:
+ raise ValueError("Event emitters can be called with an Event instance or with keyword arguments only.")
+ return event
+
+ def block(self):
+ """Block this emitter. Any attempts to emit an event while blocked
+ will be silently ignored.
+
+ Calls to block are cumulative; the emitter must be unblocked the same
+ number of times as it is blocked.
+ """
+ self.blocked += 1
+
+ def unblock(self):
+ """ Unblock this emitter. See :func:`event.EventEmitter.block`.
+ """
+ self.blocked = max(0, self.blocked-1)
+
+ def blocker(self):
+ """Return an EventBlocker to be used in 'with' statements::
+
+ with emitter.blocker():
+ ..do stuff; no events will be emitted..
+
+ """
+ return EventBlocker(self)
+
+
+class EmitterGroup(EventEmitter):
+ """EmitterGroup instances manage a set of related
+ :class:`EventEmitters <vispy.event.EventEmitter>`.
+ Its primary purpose is to provide organization for objects
+ that make use of multiple emitters and to reduce the boilerplate code needed
+ to initialize those emitters with default connections.
+
+ EmitterGroup instances are usually stored as an 'events' attribute on
+ objects that use multiple emitters. For example::
+
+ EmitterGroup EventEmitter
+ | |
+ Canvas.events.mouse_press
+ Canvas.events.resized
+ Canvas.events.key_press
+
+ EmitterGroup is also a subclass of
+ :class:`EventEmitters <vispy.event.EventEmitter>`,
+ allowing it to emit its own
+ events. Any callback that connects directly to the EmitterGroup will
+ receive _all_ of the events generated by the group's emitters.
+
+ Input arguments
+ ---------------
+ source : object
+ The object that the generated events apply to.
+ auto_connect : bool
+ If *auto_connect* is True (default), then one connection will
+ be made for each emitter that looks like
+ :func:`emitter.connect((source, 'on_'+event_name))
+ <vispy.event.EventEmitter.connect>`.
+ This provides a simple mechanism for automatically connecting a large
+ group of emitters to default callbacks.
+ emitters : keyword arguments
+ See the :func:`add <vispy.event.EmitterGroup.add>` method.
+
+ """
+ def __init__(self, source=None, auto_connect=True, **emitters):
+ EventEmitter.__init__(self, source)
+
+ self.auto_connect = auto_connect
+ self.auto_connect_format = "on_%s"
+ self._emitters = OrderedDict()
+ self._emitters_connected = False # whether the sub-emitters have
+ # been connected to the group
+
+ self.add(**emitters)
+
+ def __getitem__(self, name):
+ """
+ Return the emitter assigned to the specified name.
+ Note that emitters may also be retrieved as an attribute of the
+ EmitterGroup.
+ """
+ return self._emitters[name]
+
+ def __setitem__(self, name, emitter):
+ """
+ Alias for EmitterGroup.add(name=emitter)
+ """
+ self.add(**{name: emitter})
+
+
+ def add(self, auto_connect=None, **kwds):
+ """ Add one or more EventEmitter instances to this emitter group.
+ Each keyword argument may be specified as either an EventEmitter
+ instance or an Event subclass, in which case an EventEmitter will be
+ generated automatically. Thus::
+
+ # This statement:
+ group.add(mouse_press=MouseEvent,
+ mouse_release=MouseEvent)
+
+ # ..is equivalent to this statement:
+ group.add(mouse_press=EventEmitter(group.source, 'mouse_press', MouseEvent),
+ mouse_release=EventEmitter(group.source, 'mouse_press', MouseEvent))
+ """
+ if auto_connect is None:
+ auto_connect = self.auto_connect
+
+ # check all names before adding anything
+ for name in kwds:
+ if name in self._emitters:
+ raise ValueError("EmitterGroup already has an emitter named '%s'" % name)
+ elif hasattr(self, name):
+ raise ValueError("The name '%s' cannot be used as an emitter; it is already an attribute of EmitterGroup" % name)
+
+ # add each emitter specified in the keyword arguments
+ for name, emitter in kwds.items():
+ if emitter is None:
+ emitter = Event
+
+ if inspect.isclass(emitter) and issubclass(emitter, Event):
+ emitter = EventEmitter(source=self.source, type=name, event_class=emitter)
+ elif not isinstance(emitter, EventEmitter):
+ raise Exception('Emitter must be specified as either an EventEmitter instance or Event subclass')
+
+ emitter.source = self.source # give this emitter the same source as the group.
+
+ setattr(self, name, emitter)
+ self._emitters[name] = emitter
+
+ if auto_connect and self.source is not None:
+ emitter.connect((self.source, self.auto_connect_format % name))
+
+ # If emitters are connected to the group already, then this one should
+ # be connected as well.
+ if self._emitters_connected:
+ emitter.connect(self)
+
+
+ @property
+ def emitters(self):
+ """ List of current emitters in this group.
+ """
+ return self._emitters
+
+ def __iter__(self):
+ """
+ Iterates over the names of emitters in this group.
+ """
+ for k in self._emitters:
+ yield k
+
+ def block_all(self):
+ """ Block all emitters in this group.
+ """
+ self.block()
+ for em in self._emitters.values():
+ em.block()
+
+ def unblock_all(self):
+ """ Unblock all emitters in this group.
+ """
+ self.unblock()
+ for em in self._emitters.values():
+ em.unblock()
+
+ def connect(self, callback):
+ """ Connect the callback to the event group. The callback will receive
+ events from _all_ of the emitters in the group.
+
+ See :func:`EventEmitter.connect() <vispy.event.EventEmitter.connect>` for
+ arguments.
+ """
+ self._connect_emitters(True)
+ return EventEmitter.connect(self, callback)
+
+ def disconnect(self, callback=None):
+ """ Disconnect the callback from this group. See
+ :func:`connect() <vispy.event.EmitterGroup.connect>` and
+ :func:`EventEmitter.connect() <vispy.event.EventEmitter.connect>` for
+ more information.
+ """
+ ret = EventEmitter.disconnect(self, callback)
+ if len(self.callbacks) == 0:
+ self._connect_emitters(False)
+ return ret
+
+ def _connect_emitters(self, connect):
+ # Connect/disconnect all sub-emitters from the group. This allows the
+ # group to emit an event whenever _any_ of the sub-emitters emit,
+ # while simultaneously eliminating the overhead if nobody is listening.
+ if connect:
+ for emitter in self:
+ self[emitter].connect(self)
+ else:
+ for emitter in self:
+ self[emitter].disconnect(self)
+
+ self._emitters_connected = connect
+
+
+class EventBlocker(object):
+ """ Represents a block for an EventEmitter to be used in a context
+ manager (i.e. 'with' statement).
+ """
+ def __init__(self, target):
+ self.target = target
+
+ def __enter__(self):
+ self.target.block()
+
+ def __exit__(self, *args):
+ self.target.unblock()
+
diff --git a/vispy/util/keys.py b/vispy/util/keys.py
new file mode 100644
index 0000000..3c3bce7
--- /dev/null
+++ b/vispy/util/keys.py
@@ -0,0 +1,105 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+""" Define constants for keys.
+
+Each key constant is defined as a Key object, which allows comparison with
+strings (e.g. 'A', 'Escape', 'Shift'). This enables handling of key events
+without using the key constants explicitly (e.g. ``if ev.key == 'Left':``).
+
+In addition, key objects that represent characters can be matched to
+the integer ordinal (e.g. 32 for space, 65 for A). This behavior is mainly
+intended as a compatibility measure.
+
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+from vispy.util.six import string_types
+
+
+# class Key(str):
+# """ A string that can only be compared to another string.
+# More strict that a simple string to avoid bugs trying to compare to int.
+# """
+# def __new__(cls, s, *alternatives):
+# if not isinstance(s, string_types):
+# raise ValueError('KeyConsant must be a string')
+# s = str.__new__(cls, s)
+# s._alternatives = alternatives
+# return s
+# def __eq__(self, other):
+# if not isinstance(other, string_types):
+# raise ValueError('Key constants can only be compared to strings.')
+# return XX.__eq__(self, other) or other in self._alternatives
+
+class Key:
+ """ A Key object represents the identity of a certain key. It
+ represents one or more names that the key in question is known by.
+
+ A Key object can be compared to one of its string names (case
+ insensitive), to the integer ordinal of the key (only for keys that
+ represent characters), and to another Key instance.
+ """
+ def __init__(self, *names):
+ self._names = names
+ self._names_upper = tuple([v.upper() for v in names])
+
+ @property
+ def name(self):
+ """ The name of the key.
+ """
+ return self._names[0]
+
+ def __repr__(self):
+ return "<Key %s>" % ', '.join([repr(v) for v in self._names])
+
+ def __eq__(self, other):
+ if isinstance(other, string_types):
+ return other.upper() in self._names_upper
+ elif isinstance(other, Key):
+ return self._names[0] == other
+ elif isinstance(other, int):
+ return other in [ord(v) for v in self._names_upper if len(v)==1]
+ else:
+ raise ValueError('Key constants can only be compared to str, int and Key.')
+
+
+SHIFT = Key('Shift')
+CONTROL = Key('Control')
+ALT = Key('Alt')
+META = Key('Meta') # That Mac thingy
+
+UP = Key('Up')
+DOWN = Key('Down')
+LEFT = Key('Left')
+RIGHT = Key('Right')
+PAGEUP = Key('PageUp')
+PAGEDOWN = Key('PageDown')
+
+INSERT = Key('Insert')
+DELETE = Key('Delete')
+HOME = Key('Home')
+END = Key('End')
+
+ESCAPE = Key('Escape')
+BACKSPACE = Key('Backspace')
+
+F1 = Key('F1')
+F2 = Key('F2')
+F3 = Key('F3')
+F4 = Key('F4')
+F5 = Key('F5')
+F6 = Key('F6')
+F7 = Key('F7')
+F8 = Key('F8')
+F9 = Key('F9')
+F10 = Key('F10')
+F11 = Key('F11')
+F12 = Key('F12')
+
+SPACE = Key('Space', ' ')
+ENTER = Key('Enter', 'Return', '\n')
+TAB = Key('Tab', '\t')
diff --git a/vispy/util/ordereddict.py b/vispy/util/ordereddict.py
new file mode 100644
index 0000000..5b0303f
--- /dev/null
+++ b/vispy/util/ordereddict.py
@@ -0,0 +1,127 @@
+# Copyright (c) 2009 Raymond Hettinger
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation files
+# (the "Software"), to deal in the Software without restriction,
+# including without limitation the rights to use, copy, modify, merge,
+# publish, distribute, sublicense, and/or sell copies of the Software,
+# and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+# OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+# HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+# OTHER DEALINGS IN THE SOFTWARE.
+
+from UserDict import DictMixin
+
+class OrderedDict(dict, DictMixin):
+
+ def __init__(self, *args, **kwds):
+ if len(args) > 1:
+ raise TypeError('expected at most 1 arguments, got %d' % len(args))
+ try:
+ self.__end
+ except AttributeError:
+ self.clear()
+ self.update(*args, **kwds)
+
+ def clear(self):
+ self.__end = end = []
+ end += [None, end, end] # sentinel node for doubly linked list
+ self.__map = {} # key --> [key, prev, next]
+ dict.clear(self)
+
+ def __setitem__(self, key, value):
+ if key not in self:
+ end = self.__end
+ curr = end[1]
+ curr[2] = end[1] = self.__map[key] = [key, curr, end]
+ dict.__setitem__(self, key, value)
+
+ def __delitem__(self, key):
+ dict.__delitem__(self, key)
+ key, prev, next = self.__map.pop(key)
+ prev[2] = next
+ next[1] = prev
+
+ def __iter__(self):
+ end = self.__end
+ curr = end[2]
+ while curr is not end:
+ yield curr[0]
+ curr = curr[2]
+
+ def __reversed__(self):
+ end = self.__end
+ curr = end[1]
+ while curr is not end:
+ yield curr[0]
+ curr = curr[1]
+
+ def popitem(self, last=True):
+ if not self:
+ raise KeyError('dictionary is empty')
+ if last:
+ key = reversed(self).next()
+ else:
+ key = iter(self).next()
+ value = self.pop(key)
+ return key, value
+
+ def __reduce__(self):
+ items = [[k, self[k]] for k in self]
+ tmp = self.__map, self.__end
+ del self.__map, self.__end
+ inst_dict = vars(self).copy()
+ self.__map, self.__end = tmp
+ if inst_dict:
+ return (self.__class__, (items,), inst_dict)
+ return self.__class__, (items,)
+
+ def keys(self):
+ return list(self)
+
+ setdefault = DictMixin.setdefault
+ update = DictMixin.update
+ pop = DictMixin.pop
+ values = DictMixin.values
+ items = DictMixin.items
+ iterkeys = DictMixin.iterkeys
+ itervalues = DictMixin.itervalues
+ iteritems = DictMixin.iteritems
+
+ def __repr__(self):
+ if not self:
+ return '%s()' % (self.__class__.__name__,)
+ return '%s(%r)' % (self.__class__.__name__, self.items())
+
+ def copy(self):
+ return self.__class__(self)
+
+ @classmethod
+ def fromkeys(cls, iterable, value=None):
+ d = cls()
+ for key in iterable:
+ d[key] = value
+ return d
+
+ def __eq__(self, other):
+ if isinstance(other, OrderedDict):
+ if len(self) != len(other):
+ return False
+ for p, q in zip(self.items(), other.items()):
+ if p != q:
+ return False
+ return True
+ return dict.__eq__(self, other)
+
+ def __ne__(self, other):
+ return not self == other
diff --git a/vispy/util/ptime.py b/vispy/util/ptime.py
new file mode 100644
index 0000000..36ef0da
--- /dev/null
+++ b/vispy/util/ptime.py
@@ -0,0 +1,32 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+
+"""
+ptime.py - Precision time function made os-independent (should have been taken care of by python)
+"""
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+import time as systime
+START_TIME = None
+time = None
+
+def winTime():
+ """Return the current time in seconds with high precision (windows version, use Manager.time() to stay platform independent)."""
+ return systime.clock() + START_TIME
+ #return systime.time()
+
+def unixTime():
+ """Return the current time in seconds with high precision (unix version, use Manager.time() to stay platform independent)."""
+ return systime.time()
+
+if sys.platform.startswith('win'):
+ cstart = systime.clock() ### Required to start the clock in windows
+ START_TIME = systime.time() - cstart
+
+ time = winTime
+else:
+ time = unixTime
+
diff --git a/vispy/util/six.py b/vispy/util/six.py
new file mode 100644
index 0000000..eae3145
--- /dev/null
+++ b/vispy/util/six.py
@@ -0,0 +1,404 @@
+"""Utilities for writing code that runs on Python 2 and 3"""
+
+# Copyright (c) 2010-2013 Benjamin Peterson
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy of
+# this software and associated documentation files (the "Software"), to deal in
+# the Software without restriction, including without limitation the rights to
+# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+# the Software, and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in all
+# copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+import operator
+import sys
+import types
+
+__author__ = "Benjamin Peterson <benjamin at python.org>"
+__version__ = "1.3.0"
+
+
+# True if we are running on Python 3.
+PY3 = sys.version_info[0] == 3
+
+if PY3:
+ string_types = str,
+ integer_types = int,
+ class_types = type,
+ text_type = str
+ binary_type = bytes
+
+ MAXSIZE = sys.maxsize
+else:
+ string_types = basestring,
+ integer_types = (int, long)
+ class_types = (type, types.ClassType)
+ text_type = unicode
+ binary_type = str
+
+ if sys.platform.startswith("java"):
+ # Jython always uses 32 bits.
+ MAXSIZE = int((1 << 31) - 1)
+ else:
+ # It's possible to have sizeof(long) != sizeof(Py_ssize_t).
+ class X(object):
+ def __len__(self):
+ return 1 << 31
+ try:
+ len(X())
+ except OverflowError:
+ # 32-bit
+ MAXSIZE = int((1 << 31) - 1)
+ else:
+ # 64-bit
+ MAXSIZE = int((1 << 63) - 1)
+ del X
+
+
+def _add_doc(func, doc):
+ """Add documentation to a function."""
+ func.__doc__ = doc
+
+
+def _import_module(name):
+ """Import module, returning the module after the last dot."""
+ __import__(name)
+ return sys.modules[name]
+
+
+class _LazyDescr(object):
+
+ def __init__(self, name):
+ self.name = name
+
+ def __get__(self, obj, tp):
+ result = self._resolve()
+ setattr(obj, self.name, result)
+ # This is a bit ugly, but it avoids running this again.
+ delattr(tp, self.name)
+ return result
+
+
+class MovedModule(_LazyDescr):
+
+ def __init__(self, name, old, new=None):
+ super(MovedModule, self).__init__(name)
+ if PY3:
+ if new is None:
+ new = name
+ self.mod = new
+ else:
+ self.mod = old
+
+ def _resolve(self):
+ return _import_module(self.mod)
+
+
+class MovedAttribute(_LazyDescr):
+
+ def __init__(self, name, old_mod, new_mod, old_attr=None, new_attr=None):
+ super(MovedAttribute, self).__init__(name)
+ if PY3:
+ if new_mod is None:
+ new_mod = name
+ self.mod = new_mod
+ if new_attr is None:
+ if old_attr is None:
+ new_attr = name
+ else:
+ new_attr = old_attr
+ self.attr = new_attr
+ else:
+ self.mod = old_mod
+ if old_attr is None:
+ old_attr = name
+ self.attr = old_attr
+
+ def _resolve(self):
+ module = _import_module(self.mod)
+ return getattr(module, self.attr)
+
+
+
+class _MovedItems(types.ModuleType):
+ """Lazy loading of moved objects"""
+
+
+_moved_attributes = [
+ MovedAttribute("cStringIO", "cStringIO", "io", "StringIO"),
+ MovedAttribute("filter", "itertools", "builtins", "ifilter", "filter"),
+ MovedAttribute("input", "__builtin__", "builtins", "raw_input", "input"),
+ MovedAttribute("map", "itertools", "builtins", "imap", "map"),
+ MovedAttribute("reload_module", "__builtin__", "imp", "reload"),
+ MovedAttribute("reduce", "__builtin__", "functools"),
+ MovedAttribute("StringIO", "StringIO", "io"),
+ MovedAttribute("xrange", "__builtin__", "builtins", "xrange", "range"),
+ MovedAttribute("zip", "itertools", "builtins", "izip", "zip"),
+
+ MovedModule("builtins", "__builtin__"),
+ MovedModule("configparser", "ConfigParser"),
+ MovedModule("copyreg", "copy_reg"),
+ MovedModule("http_cookiejar", "cookielib", "http.cookiejar"),
+ MovedModule("http_cookies", "Cookie", "http.cookies"),
+ MovedModule("html_entities", "htmlentitydefs", "html.entities"),
+ MovedModule("html_parser", "HTMLParser", "html.parser"),
+ MovedModule("http_client", "httplib", "http.client"),
+ MovedModule("email_mime_multipart", "email.MIMEMultipart", "email.mime.multipart"),
+ MovedModule("email_mime_text", "email.MIMEText", "email.mime.text"),
+ MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
+ MovedModule("BaseHTTPServer", "BaseHTTPServer", "http.server"),
+ MovedModule("CGIHTTPServer", "CGIHTTPServer", "http.server"),
+ MovedModule("SimpleHTTPServer", "SimpleHTTPServer", "http.server"),
+ MovedModule("cPickle", "cPickle", "pickle"),
+ MovedModule("queue", "Queue"),
+ MovedModule("reprlib", "repr"),
+ MovedModule("socketserver", "SocketServer"),
+ MovedModule("tkinter", "Tkinter"),
+ MovedModule("tkinter_dialog", "Dialog", "tkinter.dialog"),
+ MovedModule("tkinter_filedialog", "FileDialog", "tkinter.filedialog"),
+ MovedModule("tkinter_scrolledtext", "ScrolledText", "tkinter.scrolledtext"),
+ MovedModule("tkinter_simpledialog", "SimpleDialog", "tkinter.simpledialog"),
+ MovedModule("tkinter_tix", "Tix", "tkinter.tix"),
+ MovedModule("tkinter_constants", "Tkconstants", "tkinter.constants"),
+ MovedModule("tkinter_dnd", "Tkdnd", "tkinter.dnd"),
+ MovedModule("tkinter_colorchooser", "tkColorChooser",
+ "tkinter.colorchooser"),
+ MovedModule("tkinter_commondialog", "tkCommonDialog",
+ "tkinter.commondialog"),
+ MovedModule("tkinter_tkfiledialog", "tkFileDialog", "tkinter.filedialog"),
+ MovedModule("tkinter_font", "tkFont", "tkinter.font"),
+ MovedModule("tkinter_messagebox", "tkMessageBox", "tkinter.messagebox"),
+ MovedModule("tkinter_tksimpledialog", "tkSimpleDialog",
+ "tkinter.simpledialog"),
+ MovedModule("urllib_robotparser", "robotparser", "urllib.robotparser"),
+ MovedModule("winreg", "_winreg"),
+]
+for attr in _moved_attributes:
+ setattr(_MovedItems, attr.name, attr)
+del attr
+
+moves = sys.modules[__name__ + ".moves"] = _MovedItems("moves")
+
+
+def add_move(move):
+ """Add an item to six.moves."""
+ setattr(_MovedItems, move.name, move)
+
+
+def remove_move(name):
+ """Remove item from six.moves."""
+ try:
+ delattr(_MovedItems, name)
+ except AttributeError:
+ try:
+ del moves.__dict__[name]
+ except KeyError:
+ raise AttributeError("no such move, %r" % (name,))
+
+
+if PY3:
+ _meth_func = "__func__"
+ _meth_self = "__self__"
+
+ _func_closure = "__closure__"
+ _func_code = "__code__"
+ _func_defaults = "__defaults__"
+ _func_globals = "__globals__"
+
+ _iterkeys = "keys"
+ _itervalues = "values"
+ _iteritems = "items"
+ _iterlists = "lists"
+else:
+ _meth_func = "im_func"
+ _meth_self = "im_self"
+
+ _func_closure = "func_closure"
+ _func_code = "func_code"
+ _func_defaults = "func_defaults"
+ _func_globals = "func_globals"
+
+ _iterkeys = "iterkeys"
+ _itervalues = "itervalues"
+ _iteritems = "iteritems"
+ _iterlists = "iterlists"
+
+
+try:
+ advance_iterator = next
+except NameError:
+ def advance_iterator(it):
+ return it.next()
+next = advance_iterator
+
+
+try:
+ callable = callable
+except NameError:
+ def callable(obj):
+ return any("__call__" in klass.__dict__ for klass in type(obj).__mro__)
+
+
+if PY3:
+ def get_unbound_function(unbound):
+ return unbound
+
+ Iterator = object
+else:
+ def get_unbound_function(unbound):
+ return unbound.im_func
+
+ class Iterator(object):
+
+ def next(self):
+ return type(self).__next__(self)
+
+ callable = callable
+_add_doc(get_unbound_function,
+ """Get the function out of a possibly unbound function""")
+
+
+get_method_function = operator.attrgetter(_meth_func)
+get_method_self = operator.attrgetter(_meth_self)
+get_function_closure = operator.attrgetter(_func_closure)
+get_function_code = operator.attrgetter(_func_code)
+get_function_defaults = operator.attrgetter(_func_defaults)
+get_function_globals = operator.attrgetter(_func_globals)
+
+
+def iterkeys(d, **kw):
+ """Return an iterator over the keys of a dictionary."""
+ return iter(getattr(d, _iterkeys)(**kw))
+
+def itervalues(d, **kw):
+ """Return an iterator over the values of a dictionary."""
+ return iter(getattr(d, _itervalues)(**kw))
+
+def iteritems(d, **kw):
+ """Return an iterator over the (key, value) pairs of a dictionary."""
+ return iter(getattr(d, _iteritems)(**kw))
+
+def iterlists(d, **kw):
+ """Return an iterator over the (key, [values]) pairs of a dictionary."""
+ return iter(getattr(d, _iterlists)(**kw))
+
+
+if PY3:
+ def b(s):
+ return s.encode("latin-1")
+ def u(s):
+ return s
+ if sys.version_info[1] <= 1:
+ def int2byte(i):
+ return bytes((i,))
+ else:
+ # This is about 2x faster than the implementation above on 3.2+
+ int2byte = operator.methodcaller("to_bytes", 1, "big")
+ import io
+ StringIO = io.StringIO
+ BytesIO = io.BytesIO
+else:
+ def b(s):
+ return s
+ def u(s):
+ return unicode(s, "unicode_escape")
+ int2byte = chr
+ import StringIO
+ StringIO = BytesIO = StringIO.StringIO
+_add_doc(b, """Byte literal""")
+_add_doc(u, """Text literal""")
+
+
+if PY3:
+ import builtins
+ exec_ = getattr(builtins, "exec")
+
+
+ def reraise(tp, value, tb=None):
+ if value.__traceback__ is not tb:
+ raise value.with_traceback(tb)
+ raise value
+
+
+ print_ = getattr(builtins, "print")
+ del builtins
+
+else:
+ def exec_(_code_, _globs_=None, _locs_=None):
+ """Execute code in a namespace."""
+ if _globs_ is None:
+ frame = sys._getframe(1)
+ _globs_ = frame.f_globals
+ if _locs_ is None:
+ _locs_ = frame.f_locals
+ del frame
+ elif _locs_ is None:
+ _locs_ = _globs_
+ exec("""exec _code_ in _globs_, _locs_""")
+
+
+ exec_("""def reraise(tp, value, tb=None):
+ raise tp, value, tb
+""")
+
+
+ def print_(*args, **kwargs):
+ """The new-style print function."""
+ fp = kwargs.pop("file", sys.stdout)
+ if fp is None:
+ return
+ def write(data):
+ if not isinstance(data, basestring):
+ data = str(data)
+ fp.write(data)
+ want_unicode = False
+ sep = kwargs.pop("sep", None)
+ if sep is not None:
+ if isinstance(sep, unicode):
+ want_unicode = True
+ elif not isinstance(sep, str):
+ raise TypeError("sep must be None or a string")
+ end = kwargs.pop("end", None)
+ if end is not None:
+ if isinstance(end, unicode):
+ want_unicode = True
+ elif not isinstance(end, str):
+ raise TypeError("end must be None or a string")
+ if kwargs:
+ raise TypeError("invalid keyword arguments to print()")
+ if not want_unicode:
+ for arg in args:
+ if isinstance(arg, unicode):
+ want_unicode = True
+ break
+ if want_unicode:
+ newline = unicode("\n")
+ space = unicode(" ")
+ else:
+ newline = "\n"
+ space = " "
+ if sep is None:
+ sep = space
+ if end is None:
+ end = newline
+ for i, arg in enumerate(args):
+ if i:
+ write(sep)
+ write(arg)
+ write(end)
+
+_add_doc(reraise, """Reraise an exception.""")
+
+
+def with_metaclass(meta, base=object):
+ """Create a base class with a metaclass."""
+ return meta("NewBase", (base,), {})
diff --git a/vispy/util/test/test_emitter_group.py b/vispy/util/test/test_emitter_group.py
new file mode 100644
index 0000000..d6b58ba
--- /dev/null
+++ b/vispy/util/test/test_emitter_group.py
@@ -0,0 +1,205 @@
+from vispy.util.event import Event, EventEmitter, EmitterGroup
+import unittest
+import copy
+import functools
+
+class BasicEvent(Event):
+ pass
+
+class TypedEvent(Event):
+ def __init__(self, **kwds):
+ kwds['type'] = 'typed_event'
+ Event.__init__(self, **kwds)
+
+class TestGroups(unittest.TestCase):
+ def test_group_construction(self):
+ """EmitterGroup basic construction"""
+ grp = EmitterGroup(em1=Event,
+ em2=BasicEvent,
+ em3=TypedEvent)
+
+ grp.em1.connect(self.record_event)
+ grp.em2.connect(self.record_event)
+ grp.em3.connect(self.record_event)
+ self.result = None
+ ev = grp.em1()
+ self.assert_result(event=ev, type='em1', event_class=Event)
+ ev = grp.em2()
+ self.assert_result(event=ev, type='em2', event_class=BasicEvent)
+ ev = grp.em3()
+ self.assert_result(event=ev, type='typed_event', event_class=TypedEvent)
+
+ def test_group_add_emitter(self):
+ """EmitterGroup.add"""
+ grp = EmitterGroup(em1=Event)
+ grp.em1.connect(self.record_event)
+ self.result = None
+ ev = grp.em1()
+ self.assert_result(event=ev, type='em1')
+
+ grp.add(em2=BasicEvent)
+ grp.em2.connect(self.record_event)
+ ev = grp.em2()
+ self.assert_result(event=ev, type='em2', event_class=BasicEvent)
+
+ grp.add(em3=TypedEvent)
+ grp.em3.connect(self.record_event)
+ ev = grp.em3(test_key=2)
+ self.assert_result(event=ev, type='typed_event', event_class=TypedEvent, test_key=2)
+
+ try:
+ grp.add(em3=Event)
+ assert False, "Double-added emitter"
+ except ValueError:
+ pass
+
+ try:
+ grp.add(add=Event)
+ assert False, "Added event with invalid name"
+ except ValueError:
+ pass
+
+ def test_group_block(self):
+ """EmitterGroup.block_all"""
+ grp = EmitterGroup(em1=Event, em2=Event)
+ def cb(ev):
+ self.result = 1
+ grp.em1.connect(self.record_event)
+ grp.em2.connect(self.record_event)
+ grp.connect(cb)
+
+ self.result = None
+ grp.block_all()
+ try:
+ grp.em1()
+ grp.em2()
+ grp(type='test_event')
+ finally:
+ grp.unblock_all()
+ assert self.result is None
+
+ def test_group_disconnect(self):
+ """EmitterGroup.disconnect"""
+ grp = EmitterGroup(em1=Event)
+
+ assert len(grp.em1.callbacks) == 0, grp.em1.callbacks
+ grp.connect(self.record_event)
+ assert len(grp.em1.callbacks) == 1
+ grp.add(em2=Event)
+ assert len(grp.em2.callbacks) == 1
+ grp.disconnect()
+ assert len(grp.em1.callbacks) == 0
+ assert len(grp.em2.callbacks) == 0
+
+ def test_group_autoconnect(self):
+ """EmitterGroup auto-connect"""
+ class Source:
+ def on_em1(self, ev):
+ self.result = 1
+ def em2_event(self, ev):
+ self.result = 2
+ def em3_event(self, ev):
+ self.result = 3
+ src = Source()
+ grp = EmitterGroup(source=src, em1=Event, auto_connect=False)
+ src.result = None
+ grp.em1()
+ assert src.result is None
+
+ grp = EmitterGroup(source=src, em1=Event, auto_connect=True)
+ src.result = None
+ grp.em1()
+ assert src.result == 1
+
+ grp.auto_connect_format = "%s_event"
+ grp.add(em2=Event)
+ src.result = None
+ grp.em2()
+ assert src.result == 2
+
+ grp.add(em3=Event, auto_connect=False)
+ src.result = None
+ grp.em3()
+ assert src.result is None
+
+
+ def test_add_custom_emitter(self):
+ class Emitter(EventEmitter):
+ def _prepare_event(self, *args, **kwds):
+ ev = super(Emitter, self)._prepare_event(*args, **kwds)
+ ev.test_key = 1
+ return ev
+
+ class Source:
+ pass
+ src = Source()
+
+ grp = EmitterGroup(source=src, em1=Emitter(type='test_event1'))
+ grp.em1.connect(self.record_event)
+ self.result = None
+ ev = grp.em1()
+ self.assert_result(event=ev, test_key=1, type='test_event1', source=src)
+
+ grp.add(em2=Emitter(type='test_event2'))
+ grp.em2.connect(self.record_event)
+ self.result = None
+ ev = grp.em2()
+ self.assert_result(event=ev, test_key=1, type='test_event2', source=src)
+
+ def test_group_connect(self):
+ grp = EmitterGroup(source=self, em1=Event)
+ grp.connect(self.record_event)
+ self.result = None
+ ev = grp.em1(test_key=1)
+ self.assert_result(event=ev, source=self, sources=[self, self], test_key=1)
+
+ def record_event(self, ev, key=None):
+ # get a copy of all event attributes because these may change
+ # as the event is passed around; we want to know exactly what the event
+ # looked like when it reached this callback.
+ names = [name for name in dir(ev) if name[0] != '_']
+ attrs = {}
+ for name in names:
+ val = getattr(ev,name)
+ if name == 'source':
+ attrs[name] = val
+ elif name == 'sources':
+ attrs[name] = val[:]
+ else:
+ try:
+ attrs[name] = copy.deepcopy(val)
+ except:
+ try:
+ attrs[name] = copy.copy(val)
+ except:
+ attrs[name] = val
+ if key is None:
+ self.result = ev, attrs
+ else:
+ if not hasattr(self, 'result') or self.result is None:
+ self.result = {}
+ self.result[key] = ev, attrs
+
+ def assert_result(self, key=None, **kwds):
+ assert (hasattr(self, 'result') and self.result is not None), "No event recorded"
+
+ if key is None:
+ event, event_attrs = self.result
+ else:
+ event, event_attrs = self.result[key]
+
+ assert isinstance(event, Event), "Emitted object is not Event instance"
+
+ for name,val in kwds.items():
+ if name == 'event':
+ assert event is val, "Event objects do not match"
+
+ elif name == 'event_class':
+ assert isinstance(event, val), "Emitted object is not instance of %s"%val.__name__
+
+ else:
+ attr = event_attrs[name]
+ assert (attr == val), "Event.%s != %s (%s)"%(name,str(val),str(attr))
+
+
+
diff --git a/vispy/util/test/test_event_emitter.py b/vispy/util/test/test_event_emitter.py
new file mode 100644
index 0000000..ea75ae2
--- /dev/null
+++ b/vispy/util/test/test_event_emitter.py
@@ -0,0 +1,421 @@
+from vispy.util.event import Event, EventEmitter
+import unittest
+import copy
+import functools
+
+class BasicEvent(Event):
+ pass
+
+class TypedEvent(Event):
+ def __init__(self, **kwds):
+ kwds['type'] = 'typed_event'
+ Event.__init__(self, **kwds)
+
+class TestEmitters(unittest.TestCase):
+
+ def test_emitter(self):
+ """Emitter constructed with no arguments"""
+ em = EventEmitter()
+
+ # type must be specified when emitting since Event requires type argument
+ # and the emitter was constructed without it.
+ try:
+ em()
+ assert False, "Emitting event with no type should have failed."
+ except TypeError:
+ pass
+
+ # See that emitted event has all of the properties we expect
+ ev = self.try_emitter(em, type='test_event')
+ self.assert_result(event=ev, event_class=Event, source=None, type='test_event', sources=[None])
+
+
+ def test_emitter_source(self):
+ """Emitter constructed with source argument"""
+ em = EventEmitter(source=self)
+ ev = self.try_emitter(em, type='test_event')
+ self.assert_result(event=ev, event_class=Event, source=self, type='test_event', sources=[self])
+
+ # overriding source should fail:
+ try:
+ ev = em(type='test_event', source=None)
+ assert False, "Should not be able to specify source when emitting"
+ except AttributeError:
+ pass
+
+ def test_emitter_type(self):
+ """Emitter constructed with type argument"""
+ em = EventEmitter(type='asdf')
+ ev = self.try_emitter(em)
+ self.assert_result(event=ev, event_class=Event, source=None, type='asdf', sources=[None])
+
+ # overriding type is ok:
+ ev = self.try_emitter(em, type='qwer')
+ self.assert_result(event=ev, event_class=Event, source=None, type='qwer', sources=[None])
+
+ def test_emitter_type(self):
+ """Emitter constructed with event_class argument"""
+ em = EventEmitter(event_class=BasicEvent)
+ ev = self.try_emitter(em, type='test_event')
+ self.assert_result(event=ev, event_class=BasicEvent, source=None, type='test_event', sources=[None])
+
+ # specifying non-event class should fail (eventually):
+ class X:
+ def __init__(self, *args, **kwds):
+ self.blocked=False
+ def _push_source(self, s):
+ pass
+ def _pop_source(self):
+ pass
+
+ try:
+ em = EventEmitter(event_class=X)
+ ev = self.try_emitter(em, type='test_event')
+ self.assert_result() ## checks event type
+ assert False, "Should not be able to construct emitter with non-Event class"
+ except:
+ pass
+
+ def test_event_kwargs(self):
+ """Extra Event kwargs"""
+ em = EventEmitter(type='test_event')
+ em.default_args['key1'] = 'test1'
+ em.connect(self.record_event)
+ self.result = None
+ em(key2='test2')
+ self.assert_result(key1='test1', key2='test2')
+
+ def test_prebuilt_event(self):
+ """Emit pre-built event"""
+ em = EventEmitter(type='test_event')
+ em.default_args['key1'] = 'test1'
+ em.connect(self.record_event)
+
+ self.result = None
+ ev = Event(type='my_type')
+ em(ev)
+ self.assert_result(event=ev, type='my_type')
+ assert not hasattr(self.result[0], 'key1')
+
+ def test_emitter_subclass(self):
+ """EventEmitter subclassing"""
+ class MyEmitter(EventEmitter):
+ def _prepare_event(self, *args, **kwds):
+ ev = super(MyEmitter, self)._prepare_event(*args, **kwds)
+ ev.test_tag = 1
+ return ev
+ em = MyEmitter(type='test_event')
+ em.connect(self.record_event)
+ self.result = None
+ em()
+ self.assert_result(test_tag=1)
+
+ def test_typed_event(self):
+ """Emit Event class with pre-specified type"""
+ em = EventEmitter(event_class=TypedEvent)
+ ev = self.try_emitter(em) # no need to specify type here
+ self.assert_result(event=ev, event_class=TypedEvent, source=None, type='typed_event', sources=[None])
+
+ def test_disconnect(self):
+ """Emitter disconnection"""
+ em = EventEmitter(type='test_event')
+ def cb1(ev):
+ self.result = 1
+ def cb2(ev):
+ self.result = 2
+
+ em.connect((self, 'record_event'))
+ em.connect(cb1)
+ em.connect(cb2)
+ self.result = None
+ em.disconnect(cb2)
+ ev = em()
+ self.assert_result(event=ev)
+
+ self.result = None
+ em.disconnect((self, 'record_event'))
+ ev = em()
+ assert self.result == 1
+
+ self.result = None
+ em.connect(cb1)
+ em.connect(cb2)
+ em.connect((self, 'record_event'))
+ em.disconnect()
+ em()
+ assert self.result == None
+
+ def test_reconnect(self):
+ """Ignore callback reconnect"""
+ em = EventEmitter(type='test_event')
+ def cb(ev):
+ self.result += 1
+
+ em.connect(cb)
+ em.connect(cb) # second connection should do nothing.
+ self.result = 0
+ em()
+ assert self.result == 1
+
+ def test_decorator_connection(self):
+ """Connection by decorator"""
+ em = EventEmitter(type='test_event')
+
+ @em.connect
+ def cb(ev):
+ self.result = 1
+
+ self.result = None
+ em()
+ assert self.result == 1
+
+ def test_chained_emitters(self):
+ """Chained emitters"""
+ em1 = EventEmitter(source=None, type='test_event1')
+ em2 = EventEmitter(source=self, type='test_event2')
+ em1.connect(em2)
+ em1.connect(self.record_event)
+ self.result = None
+ ev = em1()
+ self.assert_result(event=ev, event_class=Event, source=None, type='test_event1', sources=[None])
+
+ # sources look different from second emitter, but type is the same.
+ em1.disconnect(self.record_event)
+ em2.connect(self.record_event)
+ self.result = None
+ ev = em1()
+ self.assert_result(event=ev, event_class=Event, source=self, type='test_event1', sources=[None,self])
+
+ def test_emitter_error_handling(self):
+ """Emitter error handling"""
+ em = EventEmitter(type='test_event')
+ em.print_callback_errors = False
+ def cb(ev):
+ raise Exception('test')
+
+ # first callback fails; second callback still runs.
+ em.connect(self.record_event)
+ em.connect(cb)
+ self.result = None
+ ev = em()
+ self.assert_result(event=ev)
+
+ # this time we should get an exception
+ self.result = None
+ em.ignore_callback_errors = False
+ try:
+ em()
+ assert False, "Emission should have raised exception"
+ except Exception as err:
+ if str(err) != 'test':
+ raise
+
+ def test_emission_order(self):
+ """Event emission order"""
+ em = EventEmitter(type='test_event')
+ def cb1(ev):
+ self.result = 1
+ def cb2(ev):
+ self.result = 2
+
+ em.connect(cb1)
+ em.connect(cb2)
+ self.result = None
+ em()
+ assert self.result == 1, "Events emitted in wrong order"
+
+ em.disconnect()
+ em.connect(cb2)
+ em.connect(cb1)
+ self.result = None
+ em()
+ assert self.result == 2, "Events emitted in wrong order"
+
+ def test_multiple_callbacks(self):
+ """Multiple emitter callbacks"""
+ em = EventEmitter(type='test_event')
+ em.connect(functools.partial(self.record_event, key=1))
+ em.connect(functools.partial(self.record_event, key=2))
+ em.connect(functools.partial(self.record_event, key=3))
+ ev = em()
+ self.assert_result(key=1, event=ev, sources=[None])
+ self.assert_result(key=2, event=ev, sources=[None])
+ self.assert_result(key=3, event=ev, sources=[None])
+
+ def test_symbolic_callback(self):
+ """Symbolic callbacks"""
+ em = EventEmitter(type='test_event')
+ em.connect((self, 'record_event'))
+ ev = em()
+ self.assert_result(event=ev)
+
+ # now check overriding the connected method
+ def cb(ev):
+ self.result = 1
+
+ self.result = None
+ orig_method = self.record_event
+ try:
+ self.record_event = cb
+ em()
+ assert self.result == 1
+ finally:
+ self.record_event = orig_method
+
+ def test_source_stack_integrity(self):
+ """Emitter checks source stack"""
+ em = EventEmitter(type='test_event')
+
+ def cb(ev):
+ ev._sources.append('x')
+ em.connect(cb)
+
+ try:
+ em()
+ except RuntimeError as err:
+ if str(err) != 'Event source-stack mismatch.':
+ raise
+
+ em.disconnect()
+ def cb(ev):
+ ev._sources = []
+ em.connect(cb)
+
+ try:
+ em()
+ except IndexError:
+ pass
+
+ def test_emitter_loop(self):
+ """Catch emitter loops"""
+ em1 = EventEmitter(type='test_event1')
+ em2 = EventEmitter(type='test_event2')
+ em1.ignore_callback_errors = False
+ em2.ignore_callback_errors = False
+
+ ## cross-connect emitters; when we emit, an exception should be raised
+ ## indicating an event loop.
+ em1.connect(em2)
+ em2.connect(em1)
+ try:
+ em1()
+ except RuntimeError as err:
+ if str(err) != 'EventEmitter loop detected!':
+ raise err
+
+ def test_emitter_block(self):
+ """EventEmitter.blocker"""
+ em = EventEmitter(type='test_event')
+ em.connect(self.record_event)
+ self.result = None
+
+ with em.blocker():
+ em()
+ assert self.result is None
+
+ ev = em()
+ self.assert_result(event=ev)
+
+ def test_event_handling(self):
+ """Event.handled"""
+ em = EventEmitter(type='test_event')
+ def cb1(ev):
+ ev.handled = True
+ def cb2(ev):
+ assert ev.handled
+ self.result = 1
+ em.connect(cb2)
+ em.connect(cb1)
+ self.result = None
+ em()
+ assert self.result == 1
+
+
+ def test_event_block(self):
+ """Event.blocked"""
+ em = EventEmitter(type='test_event')
+ def cb1(ev):
+ ev.handled = True
+ self.result = 1
+ def cb2(ev):
+ ev.blocked = True
+ self.result = 2
+
+ em.connect(self.record_event)
+ em.connect(cb1)
+ self.result = None
+ em()
+ self.assert_result()
+
+ em.connect(cb2)
+ self.result = None
+ em()
+ assert self.result == 2
+
+ def try_emitter(self, em, **kwds):
+ em.connect(self.record_event)
+ self.result = None
+ return em(**kwds)
+
+ def record_event(self, ev, key=None):
+ # get a copy of all event attributes because these may change
+ # as the event is passed around; we want to know exactly what the event
+ # looked like when it reached this callback.
+ names = [name for name in dir(ev) if name[0] != '_']
+ attrs = {}
+ for name in names:
+ val = getattr(ev,name)
+ if name == 'source':
+ attrs[name] = val
+ elif name == 'sources':
+ attrs[name] = val[:]
+ else:
+ try:
+ attrs[name] = copy.deepcopy(val)
+ except:
+ try:
+ attrs[name] = copy.copy(val)
+ except:
+ attrs[name] = val
+ if key is None:
+ self.result = ev, attrs
+ else:
+ if not hasattr(self, 'result') or self.result is None:
+ self.result = {}
+ self.result[key] = ev, attrs
+
+ def assert_result(self, key=None, **kwds):
+ assert (hasattr(self, 'result') and self.result is not None), "No event recorded"
+
+ if key is None:
+ event, event_attrs = self.result
+ else:
+ event, event_attrs = self.result[key]
+
+ assert isinstance(event, Event), "Emitted object is not Event instance"
+
+ for name,val in kwds.items():
+ if name == 'event':
+ assert event is val, "Event objects do not match"
+
+ elif name == 'event_class':
+ assert isinstance(event, val), "Emitted object is not instance of %s"%val.__name__
+
+ else:
+ attr = event_attrs[name]
+ assert (attr == val), "Event.%s != %s (%s)"%(name,str(val),str(attr))
+
+
+
+#if __name__ == '__main__':
+ #import sys
+ #test = EventTest()
+
+ #for name in [n for n in dir(test) if n.endswith('_test')]:
+ #try:
+ #getattr(test, name)()
+ #print name, 'OK'
+ #except:
+ #sys.excepthook(*sys.exc_info())
+ #print name, 'FAILED'
+
diff --git a/vispy/util/test/test_vispy.py b/vispy/util/test/test_vispy.py
new file mode 100644
index 0000000..88a8f57
--- /dev/null
+++ b/vispy/util/test/test_vispy.py
@@ -0,0 +1,6 @@
+""" Tests to ensure that base vispy namespace functions correctly,
+including configuration options.
+"""
+
+
+
diff --git a/vispy/util/transforms.py b/vispy/util/transforms.py
new file mode 100644
index 0000000..79e667a
--- /dev/null
+++ b/vispy/util/transforms.py
@@ -0,0 +1,148 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""
+Very simple transformation library that is needed for some examples.
+"""
+
+import math
+import numpy
+import numpy as np
+
+
+def translate(M, x, y=None, z=None):
+ """
+ translate produces a translation by (x, y, z) .
+
+ Parameters
+ ----------
+ x, y, z
+ Specify the x, y, and z coordinates of a translation vector.
+ """
+ if y is None: y = x
+ if z is None: z = x
+ T = [[ 1, 0, 0, x],
+ [ 0, 1, 0, y],
+ [ 0, 0, 1, z],
+ [ 0, 0, 0, 1]]
+ T = np.array(T, dtype=np.float32).T
+ M[...] = np.dot(M,T)
+
+
+def scale(M, x, y=None, z=None):
+ """
+ scale produces a non uniform scaling along the x, y, and z axes. The three
+ parameters indicate the desired scale factor along each of the three axes.
+
+ Parameters
+ ----------
+ x, y, z
+ Specify scale factors along the x, y, and z axes, respectively.
+ """
+ if y is None: y = x
+ if z is None: z = x
+ S = [[ x, 0, 0, 0],
+ [ 0, y, 0, 0],
+ [ 0, 0, z, 0],
+ [ 0, 0, 0, 1]]
+ S = np.array(S,dtype=np.float32).T
+ M[...] = np.dot(M,S)
+
+
+def xrotate(M,theta):
+ t = math.pi*theta/180
+ cosT = math.cos( t )
+ sinT = math.sin( t )
+ R = numpy.array(
+ [[ 1.0, 0.0, 0.0, 0.0 ],
+ [ 0.0, cosT,-sinT, 0.0 ],
+ [ 0.0, sinT, cosT, 0.0 ],
+ [ 0.0, 0.0, 0.0, 1.0 ]], dtype=np.float32)
+ M[...] = np.dot(M,R)
+
+def yrotate(M,theta):
+ t = math.pi*theta/180
+ cosT = math.cos( t )
+ sinT = math.sin( t )
+ R = numpy.array(
+ [[ cosT, 0.0, sinT, 0.0 ],
+ [ 0.0, 1.0, 0.0, 0.0 ],
+ [-sinT, 0.0, cosT, 0.0 ],
+ [ 0.0, 0.0, 0.0, 1.0 ]], dtype=np.float32)
+ M[...] = np.dot(M,R)
+
+def zrotate(M,theta):
+ t = math.pi*theta/180
+ cosT = math.cos( t )
+ sinT = math.sin( t )
+ R = numpy.array(
+ [[ cosT,-sinT, 0.0, 0.0 ],
+ [ sinT, cosT, 0.0, 0.0 ],
+ [ 0.0, 0.0, 1.0, 0.0 ],
+ [ 0.0, 0.0, 0.0, 1.0 ]], dtype=np.float32)
+ M[...] = np.dot(M,R)
+
+
+def rotate(M, angle, x, y, z, point=None):
+ """
+ rotate produces a rotation of angle degrees around the vector (x, y, z).
+
+ Parameters
+ ----------
+ M
+ Current transformation as a numpy array
+
+ angle
+ Specifies the angle of rotation, in degrees.
+
+ x, y, z
+ Specify the x, y, and z coordinates of a vector, respectively.
+ """
+ angle = math.pi*angle/180
+ c,s = math.cos(angle), math.sin(angle)
+ n = math.sqrt(x*x+y*y+z*z)
+ x /= n
+ y /= n
+ z /= n
+ cx,cy,cz = (1-c)*x, (1-c)*y, (1-c)*z
+ R = numpy.array([[ cx*x + c , cy*x - z*s, cz*x + y*s, 0],
+ [ cx*y + z*s, cy*y + c , cz*y - x*s, 0],
+ [ cx*z - y*s, cy*z + x*s, cz*z + c, 0],
+ [ 0, 0, 0, 1]]).T
+ M[...] = np.dot(M,R)
+
+
+def ortho( left, right, bottom, top, znear, zfar ):
+ assert( right != left )
+ assert( bottom != top )
+ assert( znear != zfar )
+
+ M = np.zeros((4,4), dtype=np.float32)
+ M[0,0] = +2.0/(right-left)
+ M[3,0] = -(right+left)/float(right-left)
+ M[1,1] = +2.0/(top-bottom)
+ M[3,1] = -(top+bottom)/float(top-bottom)
+ M[2,2] = -2.0/(zfar-znear)
+ M[3,2] = -(zfar+znear)/float(zfar-znear)
+ M[3,3] = 1.0
+ return M
+
+def frustum( left, right, bottom, top, znear, zfar ):
+ assert( right != left )
+ assert( bottom != top )
+ assert( znear != zfar )
+
+ M = np.zeros((4,4), dtype=np.float32)
+ M[0,0] = +2.0*znear/(right-left)
+ M[2,0] = (right+left)/(right-left)
+ M[1,1] = +2.0*znear/(top-bottom)
+ M[3,1] = (top+bottom)/(top-bottom)
+ M[2,2] = -(zfar+znear)/(zfar-znear)
+ M[3,2] = -2.0*znear*zfar/(zfar-znear)
+ M[2,3] = -1.0
+ return M
+
+def perspective(fovy, aspect, znear, zfar):
+ assert( znear != zfar )
+ h = np.tan(fovy / 360.0 * np.pi) * znear
+ w = h * aspect
+ return frustum( -w, w, -h, h, znear, zfar )
diff --git a/vispy/visuals/README b/vispy/visuals/README
new file mode 100644
index 0000000..8e540ef
--- /dev/null
+++ b/vispy/visuals/README
@@ -0,0 +1,4 @@
+These are the simplest graphical components, all subclasses of primitives.base.
+Each defines its own code for drawing to OpenGL, SVG, EPS, etc.
+The compound graphical components are usually made by subclassing or combining primitives, although
+they have all the same low-level capabilities that primitives have.
diff --git a/vispy/visuals/__init__.py b/vispy/visuals/__init__.py
new file mode 100644
index 0000000..d5d8909
--- /dev/null
+++ b/vispy/visuals/__init__.py
@@ -0,0 +1,2 @@
+from .visual import Visual, GLOptions
+from .line import LineVisual
\ No newline at end of file
diff --git a/vispy/visuals/base.py b/vispy/visuals/base.py
new file mode 100644
index 0000000..22b10d7
--- /dev/null
+++ b/vispy/visuals/base.py
@@ -0,0 +1,17 @@
+"""
+Base class for visualization objects. Anything that can be displayed or placed in a scenegraph hierarchy will ultimately inherit from this class.
+
+Should define:
+ - methods for drawing to OpenGL based on version
+ - methods for drawing to SVG / EPS, etc.
+ - set of matrix transformations:
+ - each visualization object should have at least two transformation matrices
+ - one (or more) 'external' matrix is to allow the object to be transformed by the user
+ - one 'internal' matrix allows the object to internally define its own coordinate system
+ - total transform is simply the product of all matrices in the list
+ (however objects should be free to redefine this behavior where appropriate)
+ - object hierarchy information--parent and children
+ - basic cascading stylesheet system (see util/stylesheet)
+ - basic user interaction - mouse, keyboard, tablet, focus, etc.
+ (but note that a scenegraph would be required to deliver events to each object)
+"""
diff --git a/vispy/visuals/box.py b/vispy/visuals/box.py
new file mode 100644
index 0000000..15adab1
--- /dev/null
+++ b/vispy/visuals/box.py
@@ -0,0 +1,6 @@
+"""
+A box is a visualization object with a defined rectangular boundary.
+This is used mainly as a child of a layout -- anything you might want to stack in a grid or a table should
+inherit from this class.
+
+"""
diff --git a/vispy/visuals/camera.py b/vispy/visuals/camera.py
new file mode 100644
index 0000000..8243708
--- /dev/null
+++ b/vispy/visuals/camera.py
@@ -0,0 +1,8 @@
+"""
+Class defining a camera frustum.
+
+I'm including this as a subclass of primitive because 1) it will generally exist in the same coordinate system with other primitives
+and 2) it can be useful for the camera to be able draw its shape.
+
+Cameras are usually defined by primitives.view_box
+"""
diff --git a/vispy/visuals/curve.py b/vispy/visuals/curve.py
new file mode 100644
index 0000000..e69de29
diff --git a/vispy/visuals/data.py b/vispy/visuals/data.py
new file mode 100644
index 0000000..918c870
--- /dev/null
+++ b/vispy/visuals/data.py
@@ -0,0 +1,116 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2013, Vispy Development Team. All Rights Reserved.
+# Distributed under the (new) BSD License. See LICENSE.txt for more info.
+# -----------------------------------------------------------------------------
+""" Definition of the Data class """
+
+from __future__ import print_function, division, absolute_import
+
+import sys
+import numpy as np
+
+from . import gl
+from . import GLObject
+from . import VertexBuffer
+
+
+
+# ------------------------------------------------------------ Data class ---
+class Data(GLObject):
+ """The Data class allows to encapsulate several vertex buffers at once
+
+ Example
+ -------
+
+ data = Data(1000, [('a_position', np.float32,3),
+ ('a_color', np.float32,4)])
+ data['a_color'] = 0,0,0,1
+ """
+
+ def __init__(self, size, *args):
+ """ Initialize Data into default state. """
+
+ GLObject.__init__(self)
+ self._data = {}
+
+ for dtype in args:
+ dtype = np.dtype(dtype)
+ if not dtype.fields:
+ raise TypeError('dtype must be structured type')
+
+ array = np.empty(size, dtype)
+ buffer = VertexBuffer(array)
+ for name in dtype.names:
+ self._data[name] = array,buffer
+
+ @property
+ def data(self):
+ """ Return a dictionnay of all vertex buffers """
+
+ return dict( (name,buffer[name]) for name,(array,buffer) in self._data.items())
+
+
+ def __setitem__(self, key, value):
+ """ """
+
+ if key not in self._data.keys():
+ raise AttributeError('Unknown attribute')
+
+ array, buffer = self._data[key]
+ array[key][...] = value
+
+ # We mark the base buffer for a full update
+ buffer.set_data(array)
+
+
+ def __getitem__(self, key):
+ """ Return the underlying numpy array. """
+
+ if key not in self._data.keys():
+ raise AttributeError('Unknown attribute')
+
+ array, buffer = self._data[key]
+ # We mark the base buffer for a full update since we do not
+ # control whether the array will be changed afterwards
+ buffer.set_data(array)
+ return array[key]
+
+
+ def __call__(self, key):
+ """ Return the underlying vertex buffer. """
+
+ if key not in self._data.keys():
+ raise AttributeError('Unknown attribute')
+
+ array, buffer = self._data[key]
+ return buffer[key]
+
+
+ def keys(self):
+ """ Return a list of known attributes. """
+
+ return self._data.keys()
+
+
+
+
+# -----------------------------------------------------------------------------
+if __name__ == '__main__':
+
+ data = Data(100, [ ('a_position', np.float32, 3),
+ ('a_color', np.float32, 4) ],
+ [ ('a_rot', np.float32, 4) ] )
+ data['a_position'] = np.ones((100,3))
+ data['a_color'][::2] = 0,0,0,1
+ data['a_rot'][::2] = 0,0,0,1
+
+ # Return the underlying numpy array
+ print( type(data['a_color']) )
+
+ # Return the underlying vertex buffer
+ print( type(data('a_color')) )
+
+ # We could then use
+ # program.attach(data)
+
+ print( data.data )
diff --git a/vispy/visuals/image.py b/vispy/visuals/image.py
new file mode 100644
index 0000000..e69de29
diff --git a/vispy/visuals/layout.py b/vispy/visuals/layout.py
new file mode 100644
index 0000000..b9afedc
--- /dev/null
+++ b/vispy/visuals/layout.py
@@ -0,0 +1,4 @@
+"""
+Subclass of box that is used to automate the arrangement of child items into a grid / table layout.
+
+"""
diff --git a/vispy/visuals/light.py b/vispy/visuals/light.py
new file mode 100644
index 0000000..e69de29
diff --git a/vispy/visuals/line.py b/vispy/visuals/line.py
new file mode 100644
index 0000000..1409d22
--- /dev/null
+++ b/vispy/visuals/line.py
@@ -0,0 +1,369 @@
+from vispy.gloo import Program, VertexShader, FragmentShader, VertexBuffer, Texture2D
+import OpenGL.GL as gl
+import vispy.shaders.transforms as transforms
+import numpy as np
+from .visual import Visual
+
+XYPositionVertexShader = VertexShader("""
+ // XY position vertex shader
+ attribute vec2 in_position;
+ uniform float in_z_position;
+
+ vec4 global_position() {
+ return vec4(in_position, in_z_position, 1);
+ }
+""")
+
+
+#def b2f(f):
+ #b = np.array([f], dtype=np.float32).view(np.uint8)
+ #print b
+ #s = float(1 - 2 * (b[3] >> 7))
+ #e = float(((b[3]&127) << 1) | ((b[2]&128) >> 7)) - 127
+ #p = float(b[0] + 256 * b[1] + 65536 * (b[2] & 127))
+ #f = s * ((p*1.1920928955078125e-07)+1) * 2**e
+ #if f > 5.1e38:
+ #return np.nan
+ #if f < -5.1e38:
+ #return -np.nan
+ #return f
+
+XYTexPositionVertexShader = VertexShader("""
+ #extension GL_ARB_shader_bit_encoding : enable
+
+ // XY position vertex shader using texture and attribute index
+ // single-precision float positions are represented as 4-byte RGBA
+ uniform sampler2D in_position;
+ uniform int in_position_size;
+
+ vec4 read_position(int vert_index) {
+ float v_index_clipped = max(0., min(float(in_position_size), float(vert_index)));
+ float index = v_index_clipped / float(in_position_size - 1);
+ vec4 xv = texture2D(in_position, vec2(0, index));
+ vec4 yv = texture2D(in_position, vec2(1, index));
+ xv = (xv + 0.002) * 255.;
+ yv = (yv + 0.002) * 255.;
+ int xi = int(xv.r) + (int(xv.g) * 256) + (int(xv.b) * 65536) + (int(xv.a) * 16777216);
+ int yi = int(yv.r) + (int(yv.g) * 256) + (int(yv.b) * 65536) + (int(yv.a) * 16777216);
+ float x = intBitsToFloat(xi);
+ float y = intBitsToFloat(yi);
+ return vec4(x, y, 0.0, 1.0);
+ }
+""")
+
+XYZPositionVertexShader = VertexShader("""
+ // XYZ position vertex shader
+ attribute vec3 in_position;
+
+ vec4 global_position() {
+ return vec4(in_position, 1);
+ }
+""")
+
+UniformColorVertexShader = VertexShader("""
+ // Uniform color vertex shader
+ uniform vec4 in_color;
+
+ vec4 global_vertex_color(vec4 pos) {
+ return in_color;
+ }
+""")
+
+RGBColorVertexShader = VertexShader("""
+ // RGB color vertex shader
+ attribute vec3 in_color;
+ uniform float in_alpha;
+
+ vec4 global_vertex_color(vec4 pos) {
+ return vec4(in_color, in_alpha);
+ }
+""")
+
+RGBAColorVertexShader = VertexShader("""
+ // RGBA color vertex shader
+ attribute vec4 in_color;
+
+ vec4 global_vertex_color(vec4 pos) {
+ return vec4(in_color);
+ }
+""")
+
+NullColorFragmentShader = FragmentShader("""
+ // Null color fragment shader
+ vec4 global_fragment_color(vec4 vert_color, vec4 position) {
+ return vert_color;
+ }
+""")
+
+line_vertex_shader = VertexShader("""
+// LineVisual main vertex shader (LINE_STRIP version)
+
+// Generic, pluggable shader architecture
+// * declares global callbacks that may be redefined by linking different shaders together
+// * avoids use of potentially expensive conditionals inside the program
+
+#version 120
+
+// returns current vertex position as vec4
+vec4 global_position();
+
+// prototype for the transformation to be customized
+vec4 global_transform(vec4);
+
+vec4 global_vertex_color(vec4);
+
+
+varying vec4 vert_color;
+varying vec4 position;
+varying vec4 raw_position;
+
+void main(void)
+{
+ // All vertex shaders should implement this line to allow
+ // customizable transformation.
+ raw_position = global_position();
+ position = global_transform(raw_position);
+ gl_Position = position;
+ vert_color = global_vertex_color(position);
+}
+""")
+
+line_fragment_shader = FragmentShader("""
+// LineVisual main fragment shader
+#version 120
+
+// Returns fragment color given vertex color and position
+// todo: might want access to view, document, and device coordinates here.
+vec4 global_fragment_color(vec4, vec4);
+
+varying vec4 vert_color;
+varying vec4 position;
+varying vec4 raw_position;
+
+void main(void)
+{
+ gl_FragColor = global_fragment_color(vert_color, position);
+}
+""")
+
+
+tri_vertex_shader = VertexShader("""
+// LineVisual main vertex shader (TRIANGLE_STRIP version)
+
+// Generic, pluggable shader architecture
+// * declares global callbacks that may be redefined by linking different shaders together
+// * avoids use of potentially expensive conditionals inside the program
+
+#version 120
+
+// returns vertex position at index as vec4
+vec4 read_position(int);
+
+// prototype for the transformation to be customized
+vec4 global_transform(vec4);
+
+vec4 global_vertex_color(vec4);
+
+attribute float in_index; // current vertex index
+
+varying vec4 vert_color;
+varying vec4 position;
+varying vec4 raw_position;
+
+vec2 intersection(vec2 a0, vec2 a1, vec2 b0, vec2 b1) {
+ vec2 a = a1 - a0;
+ vec2 b = b1 - b0;
+ float den = (b.x * a.y - b.y * a.x);
+ if (abs(den) > 1e-10) {
+ float n = ((b0.y - a0.y) * a.x - (b0.x - a0.x) * a.y) / den;
+ return b0 + n * b;
+ }
+ else {
+ return a1;
+ }
+}
+
+void main(void)
+{
+ // All vertex shaders should implement this line to allow
+ // customizable transformation.
+ //raw_position = global_position();
+
+ int v_index = int((in_index+0.5) / 2.0);
+ int v_side = int(mod((in_index+0.5), 2.0));
+
+ // 3 vertexes in data (raw) coordinate system
+ vec4 rpos0 = read_position(v_index-1);
+ vec4 rpos1 = read_position(v_index);
+ vec4 rpos2 = read_position(v_index+1);
+
+ // 3 vertexes in screen coordinate system
+ vec4 pos0 = global_transform(rpos0);
+ vec4 pos1 = global_transform(rpos1);
+ vec4 pos2 = global_transform(rpos2);
+
+ // Direction to offset from line segment
+ float dir = 1. - (v_side * 2.);
+ float width = 5.0 * dir / 800; // TODO: 800 does not belong here
+
+ // Vectors orthogonal to line segments
+ vec2 l1 = pos1.xy - pos0.xy;
+ vec2 l2 = pos2.xy - pos1.xy;
+ vec2 l1_ortho = normalize(vec2(l1.y, -l1.x));
+ vec2 l2_ortho = normalize(vec2(l2.y, -l2.x));
+
+ // vertexes of offset line segments
+ vec2 p0a = pos0.xy + l1_ortho * width;
+ vec2 p1a = pos1.xy + l1_ortho * width;
+ vec2 p1b = pos1.xy + l2_ortho * width;
+ vec2 p2b = pos2.xy + l2_ortho * width;
+
+ // Intersection
+ vec2 i = intersection(p0a, p1a, p1b, p2b);
+ position = vec4(i.x, i.y, pos1.z, 1);
+ //position = vec4(pos1.x, pos1.y+width, pos1.z, 1);
+
+ gl_Position = position;
+ vert_color = global_vertex_color(position);
+}
+""")
+
+tri_fragment_shader = FragmentShader("""
+// LineVisual main fragment shader
+#version 120
+
+// Returns fragment color given vertex color and position
+// todo: might want access to view, document, and device coordinates here.
+vec4 global_fragment_color(vec4, vec4);
+
+varying vec4 vert_color;
+varying vec4 position;
+varying vec4 raw_position;
+
+void main(void)
+{
+ gl_FragColor = global_fragment_color(vert_color, position);
+}
+""")
+
+class LineVisual(Visual):
+ def __init__(self, **kwds):
+ Visual.__init__(self)
+ self.set_gl_options({
+ gl.GL_LINE_SMOOTH: True,
+ gl.GL_BLEND: True,
+ 'glBlendFunc': (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA),
+ 'glHint': (gl.GL_LINE_SMOOTH_HINT, gl.GL_NICEST),
+ 'glLineWidth': (1,),
+ })
+
+ self._opts = {
+ 'color': (1, 1, 1, 1),
+ 'width': 1,
+ 'mode': 'fast', # maybe 'fast_update', 'fast_redraw', and 'quality' ?
+ }
+ #self._program = ShaderProgram(
+ #VertexShader(vertex_shader),
+ #self._Visual__transform,
+ #FragmentShader(fragment_shader))
+ self._program = None
+ self.set_data(**kwds)
+
+ def update(self):
+ self._program = None
+
+ def set_data(self, **kwds):
+ """
+ Keyword arguments:
+ pos (N, 2-3) array
+ color (3-4) or (N, 3-4) array
+ width scalar or (N,) array
+ """
+ self._opts.update(kwds)
+ typ = [('pos', np.float32, self._opts['pos'].shape[-1])]
+ if isinstance(self._opts['color'], np.ndarray):
+ typ.append(('color', np.float32, self._opts['color'].shape[-1]))
+ self._data = np.empty(self._opts['pos'].shape[:-1], typ)
+ self._data['pos'] = self._opts['pos']
+ if isinstance(self._opts['color'], np.ndarray):
+ self._data['color'] = self._opts['color']
+
+ self.vbo = VertexBuffer(data=self._data)
+ #tex = np.zeros((len(self._data), 1, 3), dtype=np.float32)
+ #tex[...,:2] = self._data['pos'][:,np.newaxis]
+
+ # recast float to RGBA bytes
+ d = self._data['pos'].astype(np.float32).view(np.ubyte).reshape(len(self._data), 2, 4)
+ self.ptex = Texture2D(d)
+ self.ptex.set_filter(gl.GL_NEAREST, gl.GL_NEAREST)
+
+ self.indexes = VertexBuffer(data=np.arange(len(self._data)*2, dtype=np.float32))
+
+ def _generate_program(self):
+ if self._opts['mode'] == 'fast':
+ main_vshader = line_vertex_shader
+ main_fshader = line_fragment_shader
+ if self._opts['pos'].shape[-1] == 2:
+ posShader = XYPositionVertexShader
+ else:
+ posShader = XYZPositionVertexShader
+ else:
+ main_vshader = tri_vertex_shader
+ main_fshader = tri_fragment_shader
+ posShader = XYTexPositionVertexShader
+
+ if isinstance(self._opts['color'], tuple):
+ colorShader = UniformColorVertexShader
+ elif self._opts['color'].shape[-1] == 3:
+ colorShader = RGBColorVertexShader
+ else:
+ colorShader = RGBAColorVertexShader
+
+ self._program = ShaderProgram(
+ main_vshader,
+ self.transform_chain(),
+ main_fshader,
+ posShader,
+ colorShader,
+ NullColorFragmentShader,
+ )
+
+ #self._program._feedback_vars = ['position']
+
+
+ def draw(self):
+ Visual.draw(self)
+
+ if self._program is None:
+ self._generate_program()
+
+ with self._program:
+ if self._opts['mode'] == 'fast':
+ self._program.attributes['in_position'] = self.vbo['pos']
+ if self._opts['pos'].shape[-1] == 2:
+ self._program.uniforms['in_z_position'] = 1.0
+ else:
+ self._program.attributes['in_index'] = self.indexes
+ self._program.uniforms['in_position'] = self.ptex
+ self._program.uniforms['in_position_size'] = len(self._data)
+
+ if isinstance(self._opts['color'], tuple):
+ self._program.uniforms['in_color'] = self._opts['color']
+ elif self._opts['color'].shape[-1] == 3:
+ self._program.uniforms['in_alpha'] = 1.0;
+ self._program.attributes['in_color'] = self.vbo['color']
+ else:
+ self._program.attributes['in_color'] = self.vbo['color']
+
+ if self._opts['mode'] == 'fast':
+ #gl.glDrawArrays(gl.GL_LINE_STRIP, 0, self._data.size)
+ self._program.draw_arrays(gl.GL_LINE_STRIP)
+ else:
+ self._program.draw_arrays(gl.GL_TRIANGLE_STRIP)
+
+
+ fb = np.zeros((len(self._data), 4), dtype=np.float32)
+ #self._program.feedback_arrays(fb, gl.GL_LINE_STRIP)
+
+
+
diff --git a/vispy/visuals/mesh.py b/vispy/visuals/mesh.py
new file mode 100644
index 0000000..e622500
--- /dev/null
+++ b/vispy/visuals/mesh.py
@@ -0,0 +1,7 @@
+"""
+For drawing triangles.
+
+It should be possible to have multiple meshes render together in a single pass
+so they have the option of sorting triangles for translucency.
+
+"""
diff --git a/vispy/visuals/particle.py b/vispy/visuals/particle.py
new file mode 100644
index 0000000..dcb8871
--- /dev/null
+++ b/vispy/visuals/particle.py
@@ -0,0 +1,5 @@
+"""
+Efficient rendering of particles / markers / points
+ - point sprite mode for displaying pre-rendered textures; sizes are specified in screen coordinates
+ - absolute size mode--point sizes are specified in real coordinates
+"""
diff --git a/vispy/visuals/text.py b/vispy/visuals/text.py
new file mode 100644
index 0000000..e69de29
diff --git a/vispy/visuals/view_box.py b/vispy/visuals/view_box.py
new file mode 100644
index 0000000..8b6d172
--- /dev/null
+++ b/vispy/visuals/view_box.py
@@ -0,0 +1,9 @@
+"""
+Subclass of box which displays children using a user-specified coordinate system.
+ - scale / pan / rotate by mouse or keyboard
+ (this should be completely configurable with nice defaults; nobody ever agrees on the best way to do this)
+ - manages one or more camera objects defining the internal coordinate system
+ - clipping to boundaries
+ - ideally, changes internal to a view box should cause _only_ that box to be redrawn. This is very important
+ if you have, for example, a grid of 20x20 plots
+"""
diff --git a/vispy/visuals/visual.py b/vispy/visuals/visual.py
new file mode 100644
index 0000000..b83d9dc
--- /dev/null
+++ b/vispy/visuals/visual.py
@@ -0,0 +1,149 @@
+import OpenGL.GL as gl
+import vispy.shaders.transforms as transforms
+from vispy.util.six import string_types
+import numpy as np
+
+
+"""
+Names assigned to commonly-used combinations of GL flags
+"""
+GLOptions = {
+ 'opaque': {
+ gl.GL_DEPTH_TEST: True,
+ gl.GL_BLEND: False,
+ gl.GL_ALPHA_TEST: False,
+ gl.GL_CULL_FACE: False,
+ },
+ 'translucent': {
+ gl.GL_DEPTH_TEST: True,
+ gl.GL_BLEND: True,
+ gl.GL_ALPHA_TEST: False,
+ gl.GL_CULL_FACE: False,
+ 'glBlendFunc': (gl.GL_SRC_ALPHA, gl.GL_ONE_MINUS_SRC_ALPHA),
+ },
+ 'additive': {
+ gl.GL_DEPTH_TEST: False,
+ gl.GL_BLEND: True,
+ gl.GL_ALPHA_TEST: False,
+ gl.GL_CULL_FACE: False,
+ 'glBlendFunc': (gl.GL_SRC_ALPHA, gl.GL_ONE),
+ },
+}
+
+
+class Visual(object):
+ """
+ Base class for low-level visuals.
+
+ Provides:
+
+ * Methods for establishing GL state before drawing
+ (ie, glEnable/Disable and related calls)
+ * Methods for determining coordinate transformations to be applied to vertex data
+
+ """
+ def __init__(self):
+ self.__transforms = []
+ self.__gl_opts = {}
+
+ @property
+ def transforms(self):
+ return self.__transforms[:]
+
+ @transforms.setter
+ def transforms(self, tr):
+ assert isinstance(tr, list)
+ self.__transforms = tr
+ self.update()
+
+ def transform_chain(self):
+ return transforms.TransformChain(self.transforms, function='global_transform')
+
+ def draw(self):
+ """ Draw this item.
+ """
+ # do glEnable/Disable and related calls
+ self.setup_gl_state()
+
+ # draw here..
+
+ def init_gl(self):
+ pass
+
+ @classmethod
+ def draw_multi(self, visuals):
+ """
+ Draw multiple visuals in a single pass.
+
+ Requires items in *visuals* to be compatible.
+ Subclasses are not required to reimplement this method.
+ """
+ pass
+
+ def set_gl_options(self, opts):
+ """
+ Set the OpenGL state options to use immediately before drawing this item.
+ (Note that subclasses must call setup_gl_state before painting for this to work)
+
+ The simplest way to invoke this method is to pass in the name of
+ a predefined set of options (see the GLOptions variable):
+
+ ============= ======================================================
+ opaque Enables depth testing and disables blending
+ translucent Enables depth testing and blending
+ Elements must be drawn sorted back-to-front for
+ translucency to work correctly.
+ additive Disables depth testing, enables blending.
+ Colors are added together, so sorting is not required.
+ ============= ======================================================
+
+ It is also possible to specify any arbitrary settings as a dictionary.
+ This may consist of {'functionName': (args...)} pairs where functionName must
+ be a callable attribute of OpenGL.GL, or {GL_STATE_VAR: bool} pairs
+ which will be interpreted as calls to glEnable or glDisable(GL_STATE_VAR).
+
+ For example::
+
+ {
+ GL_ALPHA_TEST: True,
+ GL_CULL_FACE: False,
+ 'glBlendFunc': (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA),
+ }
+
+
+ """
+ if isinstance(opts, string_types):
+ opts = GLOptions[opts]
+ self.__gl_opts = opts.copy()
+ self.update()
+
+ def update(self):
+ """ Called when the Visual needs to be redrawn
+ """
+
+ def update_gl_options(self, opts):
+ """
+ Modify the OpenGL state options to use immediately before drawing this item.
+ *opts* must be a dictionary as specified by setGLOptions.
+ Values may also be None, in which case the key will be ignored.
+ """
+ self.__gl_opts.update(opts)
+
+ def setup_gl_state(self):
+ """
+ This method is responsible for preparing the GL state options needed to render
+ this item (blending, depth testing, etc). The method is called immediately before painting the item.
+ """
+ for k,v in self.__gl_opts.items():
+ if v is None:
+ continue
+ if isinstance(k, string_types):
+ func = getattr(gl, k)
+ func(*v)
+ else:
+ if v is True:
+ gl.glEnable(k)
+ else:
+ gl.glDisable(k)
+
+
diff --git a/vispy/visuals/volume.py b/vispy/visuals/volume.py
new file mode 100644
index 0000000..e69de29
--
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