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SSE optimize a common case for video

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This commit is contained in:
Henrik Rydgård 2022-04-14 01:32:16 +02:00
parent 1dae81a98a
commit 8bc2d1a653
1 changed files with 36 additions and 0 deletions
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36
GPU/Common/TextureCacheCommon.cpp
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@ -1429,6 +1429,15 @@ inline u32 TfmtRawToFullAlpha(GETextureFormat fmt) {
return 0;
}
#ifdef _M_SSE
inline u32 SSEReduce32And(__m128i value) {
// TODO: Should use a shuffle instead of slri, probably.
value = _mm_and_si128(value, _mm_srli_si128(value, 64));
value = _mm_and_si128(value, _mm_srli_si128(value, 32));
return _mm_cvtsi128_si32(value);
}
#endif
// TODO: SSE/SIMD
// At least on x86, compiler actually SIMDs these pretty well.
void CopyAndSumMask16(u16 *dst, const u16 *src, int width, u32 *outMask) {
@ -1441,8 +1450,23 @@ void CopyAndSumMask16(u16 *dst, const u16 *src, int width, u32 *outMask) {
*outMask &= (u32)mask;
}
// Used in video playback so nice to have being fast.
void CopyAndSumMask32(u32 *dst, const u32 *src, int width, u32 *outMask) {
u32 mask = 0xFFFFFFFF;
#ifdef _M_SSE
if (width >= 4) {
__m128i wideMask = _mm_set1_epi32(0xFFFFFFFF);
while (width >= 4) {
__m128i color = _mm_loadu_si128((__m128i *)src);
wideMask = _mm_and_si128(wideMask, color);
_mm_storeu_si128((__m128i *)dst, color);
src += 4;
dst += 4;
width -= 4;
}
mask = SSEReduce32And(wideMask);
}
#endif
for (int i = 0; i < width; i++) {
u32 color = src[i];
mask &= color;
@ -1461,6 +1485,18 @@ void CheckMask16(const u16 *src, int width, u32 *outMask) {
void CheckMask32(const u32 *src, int width, u32 *outMask) {
u32 mask = 0xFFFFFFFF;
#ifdef _M_SSE
if (width >= 4) {
__m128i wideMask = _mm_set1_epi32(0xFFFFFFFF);
while (width >= 4) {
wideMask = _mm_and_si128(wideMask, _mm_loadu_si128((__m128i *)src));
src += 4;
width -= 4;
}
mask = SSEReduce32And(wideMask);
}
#endif
for (int i = 0; i < width; i++) {
mask &= src[i];
}