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50 Module DocumentationExtents with width greater than or equal to the xsize of pitchedDevPtr may perform significantly faster thanextents narrower than the xsize. Secondarily, extents with height equal to the ysize of pitchedDevPtr willperform faster than when the height is shorter than the ysize.This function performs fastest when the pitchedDevPtr has been allocated by cudaMalloc3D().Parameters:pitchedDevPtr - Pointer to pitched device memoryvalue - Value to set for each byte of specified memoryextent - Size parameters for where to set device memoryReturns:Note:See also:cudaSuccess, cudaErrorInvalidValue, cudaErrorInvalidDevicePointerNote that this function may also return error codes from previous, asynchronous launches.cudaMemset, cudaMemset2D, cudaMalloc3D, make_cudaPitchedPtr, make_cudaExtentGenerated on Wed Apr 1 16:11:42 2009 for NVIDIA CUDA Library by Doxygen
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
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NVIDIA CUDAReference ManualVersion
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NoticeALL NVIDIA DESIGN SPECIFICATI
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