yum-mirror/slang

Making it easier to work with shaders

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

Harsh Aggarwal (NVIDIA)Fix 7723 - Add autodiff tests (#7919)d10732742

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1//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
2//TEST(compute):COMPARE_COMPUTE_EX:-cuda -compute -shaderobj -output-using-type
3//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type
4//TEST:SIMPLE(filecheck=CHECK): -target hlsl -profile cs_5_0 -entry computeMain -line-directive-mode none
5
6//TEST_INPUT:ubuffer(data=[0], stride=4):out,name=outputBuffer
7RWStructuredBuffer<float> outputBuffer;
8
9[BackwardDifferentiable]
10float sin_series(float x, int iterations)
11{
12    float result = x;
13    float term = x;
14    [MaxIters(35)]
15    for (int i = 1; i < iterations; i++)
16    {
17        if(i == 32)
18            i += 1;
19        term *= -1.0f * x * x / ((2 * i) * (2 * i + 1));
20        result += term;
21    }
22    return result;
23}
24
25// Check that the intermediate context of sin_series still has an array for
26// `i`. This test checks that the induction variable finder doesn't
27// accidentally succeed all the time
28
29// CHECK: struct s_bwd_prop_sin_series_Intermediates
30// CHECK: int {{[A-Za-z0-9_]+}}[{{.*}}]
31// CHECK: }
32
33[numthreads(1, 1, 1)]
34void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
35{
36    var x = diffPair(float.getPi(), 1.0);
37
38    __bwd_diff(sin_series)(x, 30, 1.0f);
39
40    outputBuffer[0] = x.d; // -1.0
41}