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// atomics-buffer.slang
//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -shaderobj
// Doesn't work on VK - GLSL output doesn't replace InterlockedAdd.
//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -vk -shaderobj
// Cannot work on CUDA, as outputBuffer becomes a CUsurfObject - which do not appear to have atomics available.
// If the buffer was a StructuredBuffer this would work on CUDA.
//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -cuda -shaderobj
// Atomics not available on CPU currently
//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -cpu -shaderobj
// RWBuffer does not work with the GFX backend as expected with Metal
//DISABLE_TEST(compute):COMPARE_COMPUTE:-slang -shaderobj -mtl
//TEST:SIMPLE(filecheck=METALLIB): -target metallib -stage compute -entry computeMain
// Not supported in WGSL: Use of traditional atomics intrinsics (InterlockedXXX functions)
//DISABLE_TEST(compute):COMPARE_COMPUTE:-slang -shaderobj -wgpu
//METALLIB: @computeMain
//TEST_INPUT:ubuffer(format=R_UInt32, data=[0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0]):out,name outputBuffer
RWBuffer<uint> outputBuffer;
void test(uint val)
{
uint originalValue;
InterlockedAdd(outputBuffer[val], val, originalValue);
InterlockedAdd(outputBuffer[val ^ 1], val*16, originalValue);
InterlockedAdd(outputBuffer[val ^ 2], val*16*16, originalValue);
}
[numthreads(4, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
uint tid = dispatchThreadID.x;
test(tid);
}
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