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