diff options
| 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-sqrt.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-sqrt.slang')
| -rw-r--r-- | tests/autodiff-dstdlib/dstdlib-sqrt.slang | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/tests/autodiff-dstdlib/dstdlib-sqrt.slang b/tests/autodiff-dstdlib/dstdlib-sqrt.slang index 9ef69ea34..15573c4ef 100644 --- a/tests/autodiff-dstdlib/dstdlib-sqrt.slang +++ b/tests/autodiff-dstdlib/dstdlib-sqrt.slang @@ -1,19 +1,25 @@ //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], stride=4):out,name=outputBuffer RWStructuredBuffer<float> outputBuffer; typedef DifferentialPair<float> dpfloat; typedef DifferentialPair<float2> dpfloat2; typedef DifferentialPair<float3> dpfloat3; -[ForwardDifferentiable] +[BackwardDifferentiable] float diffSqrt(float x) { return sqrt(x); } +[BackwardDifferentiable] +float2 diffSqrt(float2 x) +{ + return sqrt(x); +} + [numthreads(1, 1, 1)] void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID) { @@ -37,4 +43,11 @@ void computeMain(uint3 dispatchThreadID: SV_DispatchThreadID) outputBuffer[4] = res.p; // Expect: 0.000000 outputBuffer[5] = res.d; // Expect: 0.000000 } + + { + dpfloat2 dpx = dpfloat2(float2(10.0, 3.0), float2(0.0, 0.0)); + __bwd_diff(diffSqrt)(dpx, float2(1.0, 2.0)); + outputBuffer[6] = dpx.d[0]; // Expect: 0.158114 + outputBuffer[7] = dpx.d[1]; // Expect: 0.577350 + } } |