//-----------------------------------------------------------------------------
// Name: RunCUDA()
// Desc: Launches the CUDA kernels to fill in the texture data
//-----------------------------------------------------------------------------
void RunCUDA()
{
//
// map the resources we've registered so we can access them in Cuda
// - it is most efficient to map and unmap all resources in a single call,
// and to have the map/unmap calls be the boundary between using the GPU
// for Direct3D and Cuda
//
if (!g_bDeviceLost)
{
cudaStream_t stream = 0;
const int nbResources = 3;
cudaGraphicsResource *ppResources[nbResources] =
{
g_texture_2d.cudaResource,
g_texture_vol.cudaResource,
g_texture_cube.cudaResource,
};
cudaGraphicsMapResources(nbResources, ppResources, stream);
getLastCudaError("cudaGraphicsMapResources(3) failed");
//
// run kernels which will populate the contents of those textures
//
RunKernels();
//
// unmap the resources
//
cudaGraphicsUnmapResources(nbResources, ppResources, stream);
getLastCudaError("cudaGraphicsUnmapResources(3) failed");
}
}
//-----------------------------------------------------------------------------
// Name: RunCL()
// Desc: Launches the CL kernels to fill in the texture data
//-----------------------------------------------------------------------------
void RunCL()
{
//
// map the resources we've registered so we can access them in cl
// - it is most efficient to map and unmap all resources in a single call,
// and to have the map/unmap calls be the boundary between using the GPU
// for Direct3D and cl
//
if (!g_bDeviceLost) {
//
// Transfer ownership from D3D to OpenCL
//
AcquireTexturesForOpenCL();
//
// run kernels which will populate the contents of those textures
//
RunKernels();
//
// give back the ownership to D3D
//
ReleaseTexturesFromOpenCL();
}
}
