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CrossSIMD: Add SwapLowerElements to Vec4F32

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This commit is contained in:
Henrik Rydgård 2024-12-22 09:46:47 +01:00
parent 0629a98f97
commit 3bd2441f4a
1 changed files with 16 additions and 2 deletions
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18
Common/Math/CrossSIMD.h
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@ -111,6 +111,13 @@ struct Vec4F32 {
return Vec4F32{ _mm_and_ps(v, _mm_load_ps((float *)mask)) };
}
// Swaps the two lower elements. Useful for reversing triangles..
Vec4F32 SwapLowerElements() {
return Vec4F32{
_mm_shuffle_ps(v, v, _MM_SHUFFLE(3, 2, 0, 1))
};
}
inline Vec4F32 AsVec3ByMatrix44(const Mat4F32 &m) {
return Vec4F32{ _mm_add_ps(
_mm_add_ps(
@ -210,8 +217,8 @@ struct Vec4S32 {
// Swaps the two lower elements, but NOT the two upper ones. Useful for reversing triangles..
// This is quite awkward on ARM64 :/ Maybe there's a better solution?
Vec4S32 SwapLowerElements() {
float32x2_t upper = vget_high_s32(v);
float32x2_t lowerSwapped = vrev64_s32(vget_low_s32(v));
int32x2_t upper = vget_high_s32(v);
int32x2_t lowerSwapped = vrev64_s32(vget_low_s32(v));
return Vec4S32{ vcombine_s32(lowerSwapped, upper) };
};
@ -281,6 +288,13 @@ struct Vec4F32 {
return Vec4F32{ vsetq_lane_f32(0.0f, v, 3) };
}
// Swaps the two lower elements, but NOT the two upper ones. Useful for reversing triangles..
// This is quite awkward on ARM64 :/ Maybe there's a better solution?
Vec4F32 SwapLowerElements() {
float32x2_t lowerSwapped = vrev64_f32(vget_low_f32(v));
return Vec4F32{ vcombine_f32(lowerSwapped, vget_high_f32(v)) };
};
// One of many possible solutions. Sometimes we could also use vld4q_f32 probably..
static void Transpose(Vec4F32 &col0, Vec4F32 &col1, Vec4F32 &col2, Vec4F32 &col3) {
#if PPSSPP_ARCH(ARM64_NEON)