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| author | winmad <winmad.wlf@gmail.com> | 2023-02-07 22:30:00 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-02-07 22:30:00 -0800 |
| commit | b1d7dc0707406da69d94f3915fa48f39020b93ab (patch) | |
| tree | bb571884616aaf79fa663aec1eb8fcf92f5138cc /tests/autodiff-dstdlib/dstdlib-max.slang | |
| parent | 4be623c52a6518eb86756a0369706c1d6670f6bb (diff) | |
Add backward derivatives for functions in diff.meta.slang (#2633)
* WIP: start adding backward derivatives
* Overhaul `transposeParameterBlock` to support `inout` params.
* Small bug fixes.
* Bug fix on differentiable intrinsic specialization.
* Fixes.
* Run autodiff tests on CPU.
* Clean up.
* Overhaul `transposeParameterBlock` to support `inout` params.
* Small bug fixes.
* Bug fix on differentiable intrinsic specialization.
* Fixes.
* Run autodiff tests on CPU.
* Clean up.
* More bug fixes.,
* WIP: working on detach
* Arithmetic simplifications and more IR clean up logic.
* WIP: adding detach and abs
* Fix detach and abs
* Fix.
* Add IR transform pass for cleaner code emit.
* Fix test cases.
* Fix type system logic for reference type.
* Add backward derivatives for functions that already have forward derivatives
* Fix changes
---------
Co-authored-by: Yong He <yhe@nvidia.com>
Co-authored-by: Lifan Wu <lifanw@nvidia.com>
Diffstat (limited to 'tests/autodiff-dstdlib/dstdlib-max.slang')
| -rw-r--r-- | tests/autodiff-dstdlib/dstdlib-max.slang | 20 |
1 files changed, 15 insertions, 5 deletions
diff --git a/tests/autodiff-dstdlib/dstdlib-max.slang b/tests/autodiff-dstdlib/dstdlib-max.slang index d28b17e06..026914c8c 100644 --- a/tests/autodiff-dstdlib/dstdlib-max.slang +++ b/tests/autodiff-dstdlib/dstdlib-max.slang @@ -1,20 +1,20 @@ //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], stride=4):out,name=outputBuffer +//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; -[ForwardDifferentiable] +[BackwardDifferentiable] float diffMax(float x, float y) { return max(x, y); } -[ForwardDifferentiable] -float2 diffMax2(float2 x, float2 y) +[BackwardDifferentiable] +float2 diffMax(float2 x, float2 y) { return max(x, y); } @@ -33,10 +33,20 @@ void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID) { dpfloat2 dpx = dpfloat2(float2(-3.0, 4.0), float2(-1.0, -1.0)); dpfloat2 dpy = dpfloat2(float2(1.0, 2.0), float2(2.0, 2.0)); - dpfloat2 res = __fwd_diff(diffMax2)(dpx, dpy); + dpfloat2 res = __fwd_diff(diffMax)(dpx, dpy); outputBuffer[2] = res.p[0]; // Expect: 1.000000 outputBuffer[3] = res.d[0]; // Expect: 2.000000 outputBuffer[4] = res.p[1]; // Expect: 4.000000 outputBuffer[5] = res.d[1]; // Expect: -1.000000 } + + { + dpfloat2 dpx = dpfloat2(float2(2.0, 3.0), float2(0.0, 0.0)); + dpfloat2 dpy = dpfloat2(float2(5.0, 1.0), float2(0.0, 0.0)); + __bwd_diff(diffMax)(dpx, dpy, float2(1.0, 2.0)); + outputBuffer[6] = dpx.d[0]; // Expect: 0.000000 + outputBuffer[7] = dpx.d[1]; // Expect: 2.000000 + outputBuffer[8] = dpy.d[0]; // Expect: 1.000000 + outputBuffer[9] = dpy.d[1]; // Expect: 0.000000 + } } |