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(filecheck-buffer=CHECK):-slang -compute -shaderobj -output-using-type
2//TEST(compute):COMPARE_COMPUTE_EX(filecheck-buffer=CHECK):-cuda -compute -shaderobj -output-using-type
3
4//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
5RWStructuredBuffer<float> outputBuffer;
6
7[Differentiable]
8float h_outer(float a, float b, float c)
9{
10    const float3x2 m2 = float3x2(2 * a, 0.0,
11        0.0, 3 * b,
12        0.0, 5 * c);
13
14    const float3x3 m1 = float3x3(1.f);
15    return h(m1, m2);
16}
17
18[Differentiable]
19float h(float3x3 x, float3x2 y)
20{
21    let res = mul(x, y);
22    return dot(mul(res, float2(1.0)), float3(1.0));
23}
24
25[numthreads(1, 1, 1)]
26void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
27{
28    // Do a bwd_diff test for h_outer
29    var dpa = diffPair(1.f, 0.f);
30    var dpb = diffPair(1.f, 0.f);
31    var dpc = diffPair(1.f, 0.f);
32    bwd_diff(h_outer)(dpa, dpb, dpc, 1.f);
33
34    outputBuffer[1] = dpa.d;
35    outputBuffer[2] = dpb.d;
36    outputBuffer[3] = dpc.d;
37
38    // CHECK: type: float
39    // CHECK: 6.0
40    // CHECK: 9.0
41    // CHECK: 15.0
42}