yum-mirror/slang

Making it easier to work with shaders

git clone https://git.yummers.dev/yum-mirror/slang

James Helferty (NVIDIA)render-test: Change D3D12 default to sm_6_5 (#8320)f02b08490

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1// No atomic support on CPU
2//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-cpu -compute -shaderobj
3// No support for int64_t on DX11
4//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj
5// No support for int64_t on fxc - we need SM6.0 and dxil
6// https://docs.microsoft.com/en-us/windows/win32/direct3dhlsl/hlsl-shader-model-6-0-features-for-direct3d-12
7//DISABLE_TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -nvapi-slot u0 -shaderobj
8//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -dx12 -profile cs_6_0 -render-features atomic-int64 -compile-arg -O2 -shaderobj
9//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -render-features atomic-int64 -shaderobj
10//TEST(compute):COMPARE_COMPUTE_EX:-cuda -compute -shaderobj
11
12// The test doesn't directly use this, but having this defined makes the 0 slot available if NVAPI is going to be used
13// Only strictly necessary on the D3D12 path
14//TEST_INPUT:ubuffer(data=[0 0 0 0 ], stride=4):name=nvapiBuffer
15RWStructuredBuffer<int> nvapiBuffer;
16
17//TEST_INPUT:ubuffer(data=[0 1 2 3 4 5 6 7]):out,name=outputBuffer
18RWByteAddressBuffer outputBuffer;
19
20[numthreads(16, 1, 1)]
21void computeMain(int3 dispatchThreadID : SV_DispatchThreadID)
22{    
23    int tid = dispatchThreadID.x;
24    int idx = (tid & 3) ^ (tid >> 2); 
25
26    // Try directly reading
27    uint2 currentValue2 = outputBuffer.Load2(idx << 3);
28    uint64_t currentValue = uint64_t(currentValue2.y) | currentValue2.x;    
29    
30    while (true)
31    {
32        // This is probably not a great way to do this - InterlockedAddI64 would be better
33        // but we are doing this to test CAS.
34        
35        uint64_t readValue;
36        outputBuffer.InterlockedCompareExchangeU64(idx << 3, currentValue, currentValue + 1, readValue);
37        
38        if (readValue == currentValue)
39        {
40            break;
41        }
42        
43        currentValue = readValue;
44    }
45}