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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1.1 KiB39 linesraw
1//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
2//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -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], stride=4):out,name=outputBuffer
6RWStructuredBuffer<float> outputBuffer;
7
8typedef DifferentialPair<float> dpfloat;
9typedef float.Differential dfloat;
10
11[BackwardDifferentiable]
12float f(float x, float y)
13{
14    return x > 0.0 ? sqrt(x)*sqrt(x) : y;
15}
16
17[numthreads(1, 1, 1)]
18void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
19{
20    {
21        dpfloat dpa = dpfloat(2.0, 1.0);
22        dpfloat dpb = dpfloat(0.5, 1.0);
23
24        __bwd_diff(f)(dpa, dpb, 1.0);
25
26        outputBuffer[0] = dpa.d;    // Expect: 1.0
27        outputBuffer[1] = dpb.d;    // Expect: 0.0
28    }
29
30    {
31        dpfloat dpa = dpfloat(-0.3, 1.0);
32        dpfloat dpb = dpfloat(0.3, 1.0);
33
34        __bwd_diff(f)(dpa, dpb, 1.0);
35
36        outputBuffer[2] = dpa.d; // Expect: 0.0
37        outputBuffer[3] = dpb.d; // Expect: 1.0
38    }
39}