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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1.1 KiB40 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 0 0], stride=4):out,name=outputBuffer
6RWStructuredBuffer<float> outputBuffer;
7
8typedef DifferentialPair<float2> dpfloat2;
9typedef DifferentialPair<float3> dpfloat3;
10typedef DifferentialPair<float4> dpfloat4;
11
12[Differentiable]
13float4 f(float4 x)
14{
15    return float4(x.rgb, x.a * x.a);
16}
17
18[numthreads(1, 1, 1)]
19void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
20{
21    {
22        float4 a = float4(1.0, 2.0, 3.0, 4.0);
23        float4 da = float4(1.0, 0.5, 1.5, 2.5);
24
25        outputBuffer[0] = fwd_diff(f)(dpfloat4(a, da)).d.x;
26    }
27
28    {
29        float4 a = float4(1.0, 2.0, 3.0, 4.0);
30        
31        var dpa = diffPair(a);
32
33        bwd_diff(f)(dpa, float4(1.0, 0.5, 1.5, 2.5));
34
35        outputBuffer[1] = dpa.d.x; // 1.0
36        outputBuffer[2] = dpa.d.y; // 0.5
37        outputBuffer[3] = dpa.d.z; // 0.0
38        outputBuffer[4] = dpa.d.a; // 0.0
39    }
40}