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

master
branchesmasterall refs →
1004 B37 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<float> dpfloat;
9typedef float.Differential dfloat;
10
11[BackwardDifferentiable]
12float f(float x)
13{
14    float k = x > 1e-8 ? atan2(x, x) : 0.0;
15    return k;
16}
17
18[numthreads(1, 1, 1)]
19void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
20{
21    {
22        dpfloat dpa = diffPair(2.0);
23
24        __bwd_diff(f)(dpa, 1.0);
25
26        outputBuffer[0] = dpa.d; // Expect: 0.0
27    }
28
29    {
30        dpfloat dpa = diffPair(0.0,);
31
32        __bwd_diff(f)(dpa, 1.0);
33
34        outputBuffer[1] = dpa.d; // Expect: 0.0, but if select is not turned into if-else,
35                                 // this will be 'inf' or 'nan'
36    }
37}