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//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]
}
}
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