Bug#384441: libgl1-mesa-dri: Incorrect rendering in OpenGL applications

[Michel Dänzer]

severity 384441 important
tags 384441 upstream fixed-in-experimental
kthxbye

On Thu, 2006-08-24 at 12:00 +0300, Mikko Rasa wrote:
> Package: libgl1-mesa-dri
> Version: 6.4.2-1.1
> Severity: grave
> Justification: renders package unusable

I don't think this is justified, there's not just one driver in this
package...


> I have recently been getting serious rendering problems with Mesa.  For
> example, glxgears looks like this:
> 
> http://tdb.fi/~tdb/glxgears-bug.png

This particular issue is a glxgears bug which has been fixed upstream in
Mesa 6.5. It only happens with some window managers or when running
without a window manager.


> My own applications show their graphics shifted left by about half the
> window size.

This has been reported a couple of times (but unfortunately, I can't
find the other reports in the tangled woods of Mesa bug reports...) and
is fixed in libgl1-mesa-dri in experimental.

As this is the only issue clearly in libgl1-mesa-dri, let's focus on
this one in this report. Please don't mix several issues into one
report.


> Planetpenguin-racer looks correct, for a wonder.  It does have some
> z-fighting though.

Known application issue which dates back to tuxracer. Using SW TCL
should work around it.


> My graphics card is a Redeon ViVo from 2001, Xorg says "Chipset ATI
> Radeon QD (AGP) found."  A couple of reasons lead me to believe this is
> not a hardware failure:
> 1. I have also seen this on an i915 machine

Which of the separate issues above?

> 2. glxgears exhibits the problem with software rendering as well

Which should have told you that's not a libgl1-mesa-dri issue.


-- 
Earthling Michel Dänzer           |          http://tungstengraphics.com
Libre software enthusiast         |          Debian, X and DRI developer