atomic-int64-byte-address-buffer.slang

// No atomic support on CPU
//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-cpu -compute -shaderobj
// No support for int64_t on DX11
//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
// No support for int64_t on fxc - we need SM6.0 and dxil
// https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/hlsl-shader-model-6-0-features-for-direct3d-12
//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -nvapi-slot u0 -shaderobj
//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -profile cs_6_0 -use-dxil -render-features atomic-int64 -compile-arg -O2 -shaderobj
//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -render-features atomic-int64 -shaderobj
//TEST(compute):COMPARE_COMPUTE_EX:-cuda -compute -shaderobj

// The test doesn't directly use this, but having this defined makes the 0 slot available if NVAPI is going to be used
// Only strictly necessary on the D3D12 path
//TEST_INPUT:ubuffer(data=[0 0 0 0 ], stride=4):name=nvapiBuffer
RWStructuredBuffer<int> nvapiBuffer;

//TEST_INPUT:ubuffer(data=[0 1 2 3 4 5 6 7]):out,name=outputBuffer
RWByteAddressBuffer outputBuffer;

[numthreads(16, 1, 1)]
void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
{    
    int tid = dispatchThreadID.x;
    int idx = (tid & 3) ^ (tid >> 2); 

    int64_t previousValue = 0;
    outputBuffer.InterlockedAddI64((idx << 3), 1, previousValue);
    
    int anotherIdx = tid >> 2;
    outputBuffer.InterlockedAddI64(anotherIdx << 3, 3);
    
    // Bit logical
    outputBuffer.InterlockedOrU64((idx << 3), (uint64_t(2) << 32) | (tid << 4));
    outputBuffer.InterlockedXorU64((idx << 3), tid << 8);
    outputBuffer.InterlockedAndU64((idx << 3), (uint64_t(tid | 2) << 32) |  0xffffffffffffffffULL);
}