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// outputBuffer is defined in IBSDF.slang
6//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0], stride=4):out,name=outputBuffer
7
8import MaterialSystem;
9import DiffuseMaterial;
10import DiffuseMaterialInstance;
11import GlossyMaterial;
12import GlossyMaterialInstance;
13import MxLayeredMaterial;
14import MxLayeredMaterialInstance;
15
16//TEST_INPUT: type_conformance DiffuseMaterial:IMaterial = 0
17//TEST_INPUT: type_conformance GlossyMaterial:IMaterial = 1
18//TEST_INPUT: type_conformance MxLayeredMaterial:IMaterial = 2
19
20[BackwardDifferentiable]
21float3 evalBSDF(int type)
22{
23    float3 wi = normalize(float3(0.5, 0.2, 0.8));
24    float3 wo = normalize(float3(-0.1, -0.3, 0.9));
25
26    IMaterial material = createMaterialClassConformance(type, float3(0.9f, 0.6f, 0.2f));
27    MaterialInstanceData miData;
28    let mi = material.setupMaterialInstance(miData);
29    float3 f = mi.eval(miData, wi, wo);
30    return f;
31}
32
33[numthreads(1, 1, 1)]
34void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
35{
36    {
37        DifferentialPair<float3> dp_f = __fwd_diff(evalBSDF)(0);
38
39        outputBuffer[0] = dp_f.d[0];
40        outputBuffer[1] = dp_f.d[1];
41        outputBuffer[2] = dp_f.d[2];
42    }
43
44    {
45        DifferentialPair<float3> dp_f = __fwd_diff(evalBSDF)(1);
46
47        outputBuffer[3] = dp_f.d[0];
48        outputBuffer[4] = dp_f.d[1];
49        outputBuffer[5] = dp_f.d[2];
50    }
51
52    {
53        DifferentialPair<float3> dp_f = __fwd_diff(evalBSDF)(2);
54
55        outputBuffer[6] = dp_f.d[0];
56        outputBuffer[7] = dp_f.d[1];
57        outputBuffer[8] = dp_f.d[2];
58    }
59}