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| author | Sai Praveen Bangaru <31557731+saipraveenb25@users.noreply.github.com> | 2023-09-20 15:22:51 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-09-20 12:22:51 -0700 |
| commit | 25c79ada2c0fcc6c5ecb3e71ca073109adc1d7eb (patch) | |
| tree | 47f244aef7b89bf7ebeddac8c63c936531fb0b49 /tests/autodiff-dstdlib | |
| parent | 73292d9f3a1c790f72802dfe4cce57a1353dece6 (diff) | |
Fix `atan2` stdlib derivative + add tests. (#3218)
* Fix atan2 stdlib derivative. Add tests for atan2
* Create dstdlib-atan2.slang.expected.txt
* Update tests
Diffstat (limited to 'tests/autodiff-dstdlib')
| -rw-r--r-- | tests/autodiff-dstdlib/dstdlib-atan2.slang | 85 | ||||
| -rw-r--r-- | tests/autodiff-dstdlib/dstdlib-atan2.slang.expected.txt | 11 |
2 files changed, 96 insertions, 0 deletions
diff --git a/tests/autodiff-dstdlib/dstdlib-atan2.slang b/tests/autodiff-dstdlib/dstdlib-atan2.slang new file mode 100644 index 000000000..c15222336 --- /dev/null +++ b/tests/autodiff-dstdlib/dstdlib-atan2.slang @@ -0,0 +1,85 @@ +//TEST(compute, vulkan):COMPARE_COMPUTE_EX:-vk -compute -shaderobj -output-using-type +//TEST(compute):COMPARE_COMPUTE_EX:-slang -compute -shaderobj -output-using-type + +//TEST_INPUT:ubuffer(data=[0 0 0 0 0 0 0 0 0 0], stride=4):out,name=outputBuffer +RWStructuredBuffer<float> outputBuffer; + +typedef DifferentialPair<float> dpfloat; +typedef DifferentialPair<float2> dpfloat2; +typedef DifferentialPair<float3> dpfloat3; + +[BackwardDifferentiable] +float diffAtan2(float x, float y) +{ + return atan2(x, y); +} + +[numthreads(1, 1, 1)] +void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID) +{ + float eps = 1e-4; + { + dpfloat dpx = dpfloat(5.0, 1.0); + dpfloat dpy = dpfloat(3.0, 0.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[0] = res.d; + } + + { + dpfloat dpx = dpfloat(5.0, 0.0); + dpfloat dpy = dpfloat(3.0, 1.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[1] = res.d; + } + + // Test the other 3 quadrants + { + dpfloat dpx = dpfloat(-5.0, 1.0); + dpfloat dpy = dpfloat(3.0, 0.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[2] = res.d; + } + + { + dpfloat dpx = dpfloat(-5.0, 0.0); + dpfloat dpy = dpfloat(3.0, 1.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[3] = res.d; + } + + { + dpfloat dpx = dpfloat(-5.0, 1.0); + dpfloat dpy = dpfloat(-3.0, 0.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[4] = res.d; + } + + { + dpfloat dpx = dpfloat(-5.0, 0.0); + dpfloat dpy = dpfloat(-3.0, 1.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[5] = res.d; + } + + { + dpfloat dpx = dpfloat(5.0, 1.0); + dpfloat dpy = dpfloat(-3.0, 0.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[6] = res.d; + } + + { + dpfloat dpx = dpfloat(5.0, 0.0); + dpfloat dpy = dpfloat(-3.0, 1.0); + dpfloat res = __fwd_diff(diffAtan2)(dpx, dpy); + outputBuffer[7] = res.d; + } + + { + dpfloat dpx = diffPair(5.0); + dpfloat dpy = diffPair(3.0); + __bwd_diff(diffAtan2)(dpx, dpy, 1.0); + outputBuffer[8] = dpx.d; // Should be equal to outputBuffer[0] + outputBuffer[9] = dpy.d; // Should be equal to outputBuffer[2] + } +} diff --git a/tests/autodiff-dstdlib/dstdlib-atan2.slang.expected.txt b/tests/autodiff-dstdlib/dstdlib-atan2.slang.expected.txt new file mode 100644 index 000000000..5adffdaef --- /dev/null +++ b/tests/autodiff-dstdlib/dstdlib-atan2.slang.expected.txt @@ -0,0 +1,11 @@ +type: float +0.088235 +-0.147059 +0.088235 +0.147059 +-0.088235 +0.147059 +-0.088235 +-0.147059 +0.088235 +-0.147059 |