Function process

cpp/5_Domain_Specific/postProcessGL/main.cpp:209–244

/////////////////////////////////////////////////////////////////////////// Run the Cuda part of the computation ///////////////////////////////////////////////////////////////////////////

//! Run the Cuda part of the computation
////////////////////////////////////////////////////////////////////////////////
void process(int width, int height, int radius)
{
    cudaArray    *in_array;
    unsigned int *out_data;

#ifdef USE_TEXSUBIMAGE2D
    checkCudaErrors(cudaGraphicsMapResources(1, &cuda_pbo_dest_resource, 0));
    size_t num_bytes;
    checkCudaErrors(cudaGraphicsResourceGetMappedPointer((void **)&out_data, &num_bytes, cuda_pbo_dest_resource));
// printf("CUDA mapped pointer of pbo_out: May access %ld bytes, expected %d\n",
// num_bytes, size_tex_data);
#else
    out_data = cuda_dest_resource;
#endif

    // map buffer objects to get CUDA device pointers
    checkCudaErrors(cudaGraphicsMapResources(1, &cuda_tex_screen_resource, 0));
    // printf("Mapping tex_in\n");
    checkCudaErrors(cudaGraphicsSubResourceGetMappedArray(&in_array, cuda_tex_screen_resource, 0, 0));

    // calculate grid size
    dim3 block(16, 16, 1);
    // dim3 block(16, 16, 1);
    dim3 grid(width / block.x, height / block.y, 1);
    int  sbytes = (block.x + (2 * radius)) * (block.y + (2 * radius)) * sizeof(unsigned int);

    // execute CUDA kernel
    launch_cudaProcess(
        grid, block, sbytes, in_array, out_data, width, height, block.x + (2 * radius), radius, 0.8f, 4.0f);

    checkCudaErrors(cudaGraphicsUnmapResources(1, &cuda_tex_screen_resource, 0));
#ifdef USE_TEXSUBIMAGE2D
    checkCudaErrors(cudaGraphicsUnmapResources(1, &cuda_pbo_dest_resource, 0));
#endif
    checkCudaErrors(cudaDestroyTextureObject(inTexObject));
}

#ifdef USE_TEXSUBIMAGE2D
////////////////////////////////////////////////////////////////////////////////