InterlockedAdd is bread and butter in a Compute Shader, used all the time by thousands of titles. If NVIDIA have a problem with it it'll be very scenario or driver specific. Anything to illustrate what you're doing?
Im not sure I’ve ever seen InterlockedAdd (hlsl) work correctly on Nvidia. Works on AMD tho. Can’t help but wonder if I’m doing something wrong, and AMD is more permissive. Seen a few reports of other people noticing the same thing.
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See, that's my line of thought. Always question your own code first, right? Just something to the gist of: RWBuffer<uint> someBuffer; [numthreads(64,1,1)] void main( uint3 dtId : ... ) { //... InterlockedAdd(someBuffer[dtId.x], someVal); }
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