yum-mirror/slang

Making it easier to work with shaders

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

CopilotFix CUDA backend missing U32_firstbitlow implementation (#7921)e8797496b

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1//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK):-cpu -compute -shaderobj
2//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK):-slang -compute -shaderobj
3//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK):-slang -compute -dx12 -shaderobj
4//TEST(compute, vulkan):COMPARE_COMPUTE(filecheck-buffer=CHECK):-vk -compute -shaderobj
5//TEST(compute, vulkan):COMPARE_COMPUTE(filecheck-buffer=CHECK):-cuda -compute -shaderobj
6
7//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0 0], stride=4):out,name outputBuffer
8RWStructuredBuffer<uint> outputBuffer;
9
10[numthreads(1, 1, 1)]
11void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
12{
13    bool result = true;
14    result = result && firstbithigh(0) == -1;
15    result = result && firstbithigh(1) == 0;
16    result = result && firstbithigh(2) == 1;
17    result = result && firstbithigh(3) == 1;
18    result = result && firstbithigh(4) == 2;
19    result = result && firstbithigh(5) == 2;
20    result = result && firstbithigh(6) == 2;
21    result = result && firstbithigh(7) == 2;
22    result = result && firstbithigh(8) == 3;
23
24    result = result && firstbithigh(-1) == -1;
25    result = result && firstbithigh(-2) == 0;
26    result = result && firstbithigh(-3) == 1;
27    result = result && firstbithigh(-4) == 1;
28    result = result && firstbithigh(-5) == 2;
29    result = result && firstbithigh(-6) == 2;
30    result = result && firstbithigh(-7) == 2;
31    result = result && firstbithigh(-8) == 2;
32    result = result && firstbithigh(-9) == 3;
33
34    outputBuffer[0] = (result == true) ? 1 : 0;
35}
36
37// CHECK: 1