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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1.4 KiB53 linesraw
1// Test calling differentiable function through dynamic dispatch.
2
3//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
4//TEST(compute):COMPARE_COMPUTE_EX:-cuda -compute -shaderobj -output-using-type
5//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type
6
7//TEST_INPUT:ubuffer(data=[0 0 0 0 0], stride=4):out,name=outputBuffer
8RWStructuredBuffer<float> outputBuffer;
9
10[anyValueSize(16)]
11interface IInterface
12{
13    [ForwardDifferentiable]
14    float calc(float x);
15}
16
17struct A : IInterface
18{
19    float z;
20
21    [ForwardDifferentiable]
22    [NoDiffThis]
23    float calc(float x) { return x * x * x; }
24};
25
26struct B : IInterface
27{
28    float z;
29
30    [ForwardDifferentiable]
31    [NoDiffThis]
32    float calc(float x) { return x * x + z; }
33};
34
35[ForwardDifferentiable]
36float sqr<T:IInterface>(T obj, float x)
37{
38    return obj.calc(x);
39}
40
41//TEST_INPUT: type_conformance A:IInterface = 0
42//TEST_INPUT: type_conformance B:IInterface = 1
43
44
45[numthreads(1, 1, 1)]
46void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
47{
48    var obj = createDynamicObject<IInterface>(dispatchThreadID.x, 0); // A
49    outputBuffer[0] = __fwd_diff(sqr)(obj, DifferentialPair<float>(2.0, 1.0)).d; // A.calc, expect 12
50
51    obj = createDynamicObject<IInterface>(dispatchThreadID.x + 1, 0); // B
52    outputBuffer[1] = __fwd_diff(sqr)(obj, DifferentialPair<float>(1.5, 1.0)).d; // B.calc, expect 3
53}