Does OpenCL use the samplers or does it ONLY use global memory.
I know that for Compute Mode you don't have access to the color buffers but you do still have access to the samplers (therefore cache), so does OpenCL take advantage of this?
If so, I'm very curious how it handles the read in read out problem of using the samplers instead of the read/write of using only global memory (but not having access to cache)?