[arrayfire] 149/248: Fix for cuda backend surface rendering function

[Ghislain Vaillant]

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ghisvail-guest pushed a commit to branch dfsg-clean
in repository arrayfire.

commit 9436f1047a67e5092a54f78514870276a6b82c4c
Author: pradeep <pradeep at arrayfire.com>
Date:   Thu Oct 29 12:42:43 2015 -0400

    Fix for cuda backend surface rendering function
    
    Interopmanager get resource method for surface objects was missing
    earlier.
---
 src/backend/cuda/interopManager.cu  | 17 +++++++++++++++++
 src/backend/cuda/interopManager.hpp |  1 +
 2 files changed, 18 insertions(+)

diff --git a/src/backend/cuda/interopManager.cu b/src/backend/cuda/interopManager.cu
index dcee681..b492a5e 100644
--- a/src/backend/cuda/interopManager.cu
+++ b/src/backend/cuda/interopManager.cu
@@ -116,6 +116,23 @@ cudaGraphicsResource* InteropManager::getBufferResource(const fg::Histogram* key
     return interop_maps[device][key_value];
 }
 
+cudaGraphicsResource* InteropManager::getBufferResource(const fg::Surface* key)
+{
+    int device = getActiveDeviceId();
+    void* key_value = (void*)key;
+
+    iter_t iter = interop_maps[device].find(key_value);
+
+    if(interop_maps[device].find(key_value) == interop_maps[device].end()) {
+        cudaGraphicsResource *cudaVBOResource;
+        // Register VBO with CUDA
+        CUDA_CHECK(cudaGraphicsGLRegisterBuffer(&cudaVBOResource, key->vbo(), cudaGraphicsMapFlagsWriteDiscard));
+        interop_maps[device][key_value] = cudaVBOResource;
+    }
+
+    return interop_maps[device][key_value];
+}
+
 }
 
 #endif
diff --git a/src/backend/cuda/interopManager.hpp b/src/backend/cuda/interopManager.hpp
index 6508b08..e586d38 100644
--- a/src/backend/cuda/interopManager.hpp
+++ b/src/backend/cuda/interopManager.hpp
@@ -42,6 +42,7 @@ class InteropManager
         cudaGraphicsResource* getBufferResource(const fg::Plot* handle);
         cudaGraphicsResource* getBufferResource(const fg::Plot3* handle);
         cudaGraphicsResource* getBufferResource(const fg::Histogram* handle);
+        cudaGraphicsResource* getBufferResource(const fg::Surface* handle);
 
     protected:
         InteropManager() {}

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