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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1.3 KiB51 linesraw
1//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type
2//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -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], stride=4):out,name=outputBuffer
6RWStructuredBuffer<float> outputBuffer;
7
8struct A : IDifferentiable
9{
10    float data[3];
11
12    [Differentiable]
13    __init()
14    {
15        [ForceUnroll] for (uint i = 0; i < 3; i++) data[i] = 0.f;
16    }
17
18    [mutating]
19    [Differentiable]
20    void write(float value, inout uint offset)
21    {
22        data[offset++] = value;
23    }
24
25    [mutating]
26    [Differentiable]
27    void write<let N : int>(vector<float, N> value, inout uint offset)
28    {
29        [ForceUnroll] for (uint i = 0; i < N; i++) write(value[i], offset);
30    }
31}
32
33[Differentiable]
34float3 run(float3 x)
35{
36    A a = A();
37    uint offset = 0;
38    a.write(x, offset);
39    return float3(a.data[0], a.data[1], a.data[2]);
40}
41
42[numthreads(1, 1, 1)]
43void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
44{
45    DifferentialPair<float3> dp = diffPair(float3(1.f, 2.f, 3.f), float3(0.f));
46    float3 dOut = float3(1.f, 0.5f, 0.1f);
47    bwd_diff(run)(dp, dOut);
48    outputBuffer[0] = dp.d[0];
49    outputBuffer[1] = dp.d[1];
50    outputBuffer[2] = dp.d[2];
51}