Search code examples
pythoncudapycuda

cudaBindTextureToArray in PyCuda

Is-there a way to bind an array that is already on the gpu to a texture using PyCuda ?

There is already a cuda.bind_array_to_texref(cuda.make_multichannel_2d_array(...), texref) that binds an array on the CPU to a texture, but I couldn't find the equivalent of cudaBindTextureToArray in PyCuda if the array is already on the device. For example, doing : 

myArray = [1, 2, 3]
myArray_d = gpu.to_gpu(myArray)  # then performs some computations on  it, and then
cuda.bind_texture_to_array(myArray_d, texref)
Solution

  • If you want to bind an existing CUDA array in GPU memory to a texture reference, then pycuda.driver.TextureReference.set_array() is probably what you want. Note the PyCUDA is built on the driver API, so the call you are looking for is actually cuTexRefSetArray rather than cudaBindTextureToArray.