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, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type
2//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
3//TEST(compute):COMPARE_COMPUTE_EX:-cuda -compute -shaderobj -output-using-type
4
5//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0], stride=4):out,name=outputBuffer
6RWStructuredBuffer<float> outputBuffer;
7
8typedef DifferentialPair<float> dpfloat;
9
10[BackwardDifferentiable]
11float f(float x)
12{
13    return exp(x);
14}
15
16[BackwardDifferentiable]
17float g(float x)
18{
19    return sin(x);
20}
21
22[BackwardDifferentiable]
23float h(float x)
24{
25    return cos(x);
26}
27
28[numthreads(1, 1, 1)]
29void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
30{
31    {
32        dpfloat dpa = dpfloat(2.0, 1.0);
33
34        outputBuffer[0] = f(dpa.p);        // Expect: 7.389056
35        outputBuffer[1] = __fwd_diff(f)(dpa).d; // Expect: 7.389056
36        outputBuffer[2] = g(dpa.p);        // Expect: 0.909297
37        outputBuffer[3] = __fwd_diff(g)(dpa).d; // Expect: -0.416146
38        outputBuffer[4] = h(dpa.p);        // Expect: -0.416146
39        outputBuffer[5] = __fwd_diff(h)(dpa).d; // Expect: -0.909297
40    }
41
42    {
43        dpfloat dpa = dpfloat(2.0, 0.0);
44        __bwd_diff(f)(dpa, 1.0);
45        outputBuffer[6] = dpa.d; // Expect: 7.389056
46        __bwd_diff(g)(dpa, 1.0);
47        outputBuffer[7] = dpa.d; // Expect: -0.416146
48        __bwd_diff(h)(dpa, 1.0);
49        outputBuffer[8] = dpa.d; // Expect: -0.909297
50    }
51}