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 0], stride=4):out,name=outputBuffer
6RWStructuredBuffer<float> outputBuffer;
7
8typedef DifferentialPair<float> dpfloat;
9typedef DifferentialPair<float2> dpfloat2;
10typedef DifferentialPair<float3> dpfloat3;
11
12[BackwardDifferentiable]
13float diffPow(float x, float y)
14{
15    return pow(x, y);
16}
17
18[BackwardDifferentiable]
19float2 diffPow(float2 x, float2 y)
20{
21    return pow(x, y);
22}
23
24[numthreads(1, 1, 1)]
25void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
26{
27    {
28        dpfloat dpx = dpfloat(5.0, 1.0);
29        dpfloat dpy = dpfloat(3.0, 0.0);
30        dpfloat res = __fwd_diff(diffPow)(dpx, dpy);
31        outputBuffer[0] = res.p;               // Expect: 125.000000
32        outputBuffer[1] = res.d;               // Expect: 75.000000
33    }
34
35    {
36        dpfloat2 dpx = dpfloat2(float2(10.0, 3.0), float2(0.0, -2.0));
37        dpfloat2 dpy = dpfloat2(float2(2.5, 4.0), float2(1.0, 1.0));
38        dpfloat2 res = __fwd_diff(diffPow)(dpx, dpy);
39        outputBuffer[2] = res.p[0];            // Expect: 316.227722
40        outputBuffer[3] = res.d[0];            // Expect: 728.141235
41        outputBuffer[4] = res.p[1];            // Expect: 81.000000
42        outputBuffer[5] = res.d[1];            // Expect: -127.012398
43    }
44
45    {
46        dpfloat2 dpx = dpfloat2(float2(2.0, 4.0), float2(0.0, 0.0));
47        dpfloat2 dpy = dpfloat2(float2(3.0, -2.0), float2(0.0, 0.0));
48        __bwd_diff(diffPow)(dpx, dpy, float2(1.0, 1.0));
49        outputBuffer[6] = dpx.d[0]; // Expect: 12.000000
50        outputBuffer[7] = dpx.d[1]; // Expect: -0.031250
51        outputBuffer[8] = dpy.d[0]; // Expect: 5.545177
52        outputBuffer[9] = dpy.d[1]; // Expect: 0.086643
53    }
54}