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 →
2.0 KiB63 linesraw
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//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0 0 0 0], stride=4):out,name=outputBuffer
6RWStructuredBuffer<float> outputBuffer;
7
8typedef DifferentialPair<float> dpfloat;
9typedef DifferentialPair<float2> dpfloat2;
10typedef DifferentialPair<float3> dpfloat3;
11
12[BackwardDifferentiable]
13float diffSqrt(float x)
14{
15    return sqrt(x);
16}
17
18[BackwardDifferentiable]
19float2 diffSqrt(float2 x)
20{
21    return sqrt(x);
22}
23
24[numthreads(1, 1, 1)]
25void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID)
26{
27    {
28        dpfloat dpx = dpfloat(2.0, 1.0);
29        dpfloat res = __fwd_diff(diffSqrt)(dpx);
30        outputBuffer[0] = res.p;               // Expect: 1.414214
31        outputBuffer[1] = res.d;               // Expect: 0.353553
32    }
33
34    {
35        dpfloat dpx = dpfloat(100.0, -3.0);
36        dpfloat res = __fwd_diff(diffSqrt)(dpx);
37        outputBuffer[2] = res.p;               // Expect: 10.000000
38        outputBuffer[3] = res.d;               // Expect: -0.150000
39    }
40
41    {
42        dpfloat dpx = dpfloat(0.0, 1.0);
43        dpfloat res = __fwd_diff(diffSqrt)(dpx);
44        outputBuffer[4] = res.p; // Expect: 0.000000
45        outputBuffer[5] = res.d; // Expect: 1581.138916
46    }
47
48    {
49        dpfloat2 dpx = dpfloat2(float2(10.0, 3.0), float2(0.0, 0.0));
50        __bwd_diff(diffSqrt)(dpx, float2(1.0, 2.0));
51        outputBuffer[6] = dpx.d[0]; // Expect: 0.158114
52        outputBuffer[7] = dpx.d[1]; // Expect: 0.577350
53    }
54
55    {
56        var dpx = diffPair(float2x2(4.0, 9.0, 16.0, 25.0), float2x2(0.0, 0.0, 0.0, 0.0));
57        __bwd_diff(sqrt)(dpx, float2x2(1.0, 2.0, 3.0, 4.0));
58        outputBuffer[8] = dpx.d[0][0]; // Expect: 0.25
59        outputBuffer[9] = dpx.d[0][1]; // Expect: 0.3333
60        outputBuffer[10] = dpx.d[1][0]; // Expect: 0.375
61        outputBuffer[11] = dpx.d[1][1]; // Expect: 0.4
62    }
63}