NVIDIA CUDA

3.9 OpenGL Interoperability 513.9 OpenGL InteroperabilityFunctions• cudaError_t cudaGLMapBufferObject (void ∗∗devPtr, GLuint bufObj)Maps a buffer object for access by CUDA.• cudaError_t cudaGLRegisterBufferObject (GLuint bufObj)Registers a buffer object for access by CUDA.• cudaError_t cudaGLSetGLDevice (int device)Sets the CUDA device for use with OpenGL interoperability.• cudaError_t cudaGLUnmapBufferObject (GLuint bufObj)Unmaps a buffer object for access by CUDA.• cudaError_t cudaGLUnregisterBufferObject (GLuint bufObj)Unregisters a buffer object for access by CUDA.• cudaError_t cudaWGLGetDevice (int ∗device, HGPUNV hGpu)Gets the CUDA device associated with hGpu.3.9.1 Detailed DescriptionThis section describes the OpenGL interoperability functions of the CUDA runtime application programming interface.3.9.2 Function Documentation3.9.2.1 cudaError_t cudaGLMapBufferObject (void ∗∗ devPtr, GLuint bufObj)Maps the buffer object of ID bufObj into the address space of CUDA and returns in ∗devPtr the base pointer of theresulting mapping. The buffer must have previously been registered by calling cudaGLRegisterBufferObject(). Whilea buffer is mapped by CUDA, any OpenGL operation which references the buffer will result in undefined behavior.The OpenGL context used to create the buffer, or another context from the same share group, must be bound to thecurrent thread when this is called.Parameters:devPtr - Returned device pointer to CUDA objectbufObj - Buffer object ID to mapReturns:Note:cudaSuccess, cudaErrorMapBufferObjectFailedNote that this function may also return error codes from previous, asynchronous launches.Generated on Wed Apr 1 16:11:42 2009 for NVIDIA CUDA Library by Doxygen