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Dear all,
I'd like to find the index of a 3D texture from a compute shader.
But it crashes probably because it runs out of bounds
[code]
uint index = x + y x 128 + z x 128 x 128
[/code]
I've got 768 compute units on my GPU
context→Dispatch (128,128,128);
thanks
How big is your thread group? 128x128x128 is a lot of thread groups…2M in fact! So if you have 64 threads in your thread group, that will dispatch 128 million threads. I suspect this is not what you want.
If your 3D texture is 128x128x128 and you want 1 thread per texel, then you probably want a thread group size of something like 4x4x4 or 8x8x8, and then you want to divide your texture dimensions by the thread group size. So for a thread group of 4x4x4 your parameters would be Dispatch(32,32,32), and for 8x8x8 it would be (16,16,16).
