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, 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 DifferentialPair<float3> dpfloat3;
10
11[ForwardDifferentiable]
12float f(float a)
13{
14    return a * a + a;
15}
16
17[ForwardDifferentiable]
18float f(float3 a)
19{
20    return a.x * a.y + a.z;
21}
22
23[ForwardDifferentiable]
24float g(float a)
25{
26    // df((2.0, 4.0, 6.0), (1.0, 2.0, 3.0)) 
27    // 2.0 * 2.0 + 4.0 * 1.0 + 3.0 = 11.0
28    return f(float3(a, 2*a, 3*a));
29}
30
31[numthreads(1, 1, 1)]
32void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
33{
34    {
35        dpfloat dpa = dpfloat(2.0, 1.0);
36        dpfloat3 dpf3 = dpfloat3(float3(1.0, 3.0, 5.0), float3(0.5, 1.5, 2.5));
37
38        outputBuffer[0] = f(dpa.p);                               // Expect: 6
39        outputBuffer[1] = f(dpf3.p);                              // Expect: 8
40        outputBuffer[2] = __fwd_diff(f)(dpf3).d;                       // Expect: 5.5
41        outputBuffer[3] = __fwd_diff(f)(dpa).d;                        // Expect: 5
42        outputBuffer[4] = __fwd_diff(g)(dpa).d;                        // Expect: 11.0
43    }
44}