https://github.com/shader-slang/slang
Tip revision: e698b4ae92b996ac54d023c831170a5467b2d1a0 authored by Sai Praveen Bangaru on 28 September 2023, 05:45:09 UTC
Remove `[NoSideEffect]` from `DiffTensorView.store()` (#3247)
Remove `[NoSideEffect]` from `DiffTensorView.store()` (#3247)
Tip revision: e698b4a
wave.slang
//TEST_CATEGORY(wave, compute)
//DISABLE_TEST:COMPARE_COMPUTE_EX:-cpu -compute -shaderobj
//DISABLE_TEST:COMPARE_COMPUTE_EX:-slang -compute -shaderobj
//TEST:COMPARE_COMPUTE_EX:-slang -compute -dx12 -use-dxil -profile cs_6_0 -shaderobj
//TEST(vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj
//TEST:COMPARE_COMPUTE_EX:-cuda -compute -render-features cuda_sm_7_0 -shaderobj
//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name outputBuffer
RWStructuredBuffer<int> outputBuffer;
[numthreads(4, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
int idx = int(dispatchThreadID.x);
int value = 0;
value |= WaveActiveAllTrue(idx < 4 ) ? 1 : 0;
value |= WaveActiveAnyTrue(idx == 2) ? 2 : 0;
value |= WaveActiveAnyTrue(idx == -1) ? 4 : 0;
value |= WaveActiveAllTrue(idx == 3) ? 8 : 0;
int sum = WaveActiveSum(idx);
value |= (sum << 4);
// TODO(JS):
// This result is unexpected. I expect 1 * 2 * 1 * 2 = 4. But we get 0 on DX (so disable for now). On CUDA I get 4.
// int product = WaveActiveProduct((idx & 1) + 1);
/// value |= (product << 8);
// TODO(JS): NOTE! This only works with uint, *NOT* int on HLSL/DXC.
// We need to update the stdlib to reflect this.
uint xor = WaveActiveBitXor(uint(idx + 1));
value |= int(xor << 12);
outputBuffer[idx] = value;
}