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LibSoftGPU: Add ddx() and ddy() to calculate partial derivatives

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This commit is contained in:
Stephan Unverwerth 2022-02-19 02:15:00 +01:00 • committed by Linus Groh
parent 869393c7a0
commit be15cf5457
1 changed files with 36 additions and 0 deletions
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36
Userland/Libraries/LibSoftGPU/SIMD.h
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@ -67,4 +67,40 @@ ALWAYS_INLINE static constexpr Vector4<AK::SIMD::i32x4> expand4(Vector4<int> con
};
}
ALWAYS_INLINE static AK::SIMD::f32x4 ddx(AK::SIMD::f32x4 v)
{
return AK::SIMD::f32x4 {
v[1] - v[0],
v[1] - v[0],
v[3] - v[2],
v[3] - v[2],
};
}
ALWAYS_INLINE static AK::SIMD::f32x4 ddy(AK::SIMD::f32x4 v)
{
return AK::SIMD::f32x4 {
v[2] - v[0],
v[3] - v[1],
v[2] - v[0],
v[3] - v[1],
};
}
ALWAYS_INLINE static Vector2<AK::SIMD::f32x4> ddx(Vector2<AK::SIMD::f32x4> const& v)
{
return {
ddx(v.x()),
ddx(v.y()),
};
}
ALWAYS_INLINE static Vector2<AK::SIMD::f32x4> ddy(Vector2<AK::SIMD::f32x4> const& v)
{
return {
ddy(v.x()),
ddy(v.y()),
};
}
}