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Xfermode: SSE2 implementation of darken&lighten mode

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With SSE2 optimization, performance of the related two benchmarks will
improve about 45% on desktop i7-3770. Here are the data:
before:
Xfermode_Lighten   8888:  cmsecs =     33.60   565:  cmsecs =     48.84
 Xfermode_Darken   8888:  cmsecs =     34.16   565:  cmsecs =     48.99
after:
Xfermode_Lighten   8888:  cmsecs =     18.71   565:  cmsecs =     25.41
 Xfermode_Darken   8888:  cmsecs =     18.39   565:  cmsecs =     25.40

BUG=skia:
R=mtklein@google.com

Author: qiankun.miao@intel.com

Review URL: https://codereview.chromium.org/234653002

git-svn-id: http://skia.googlecode.com/svn/trunk@14395 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
commit-bot@chromium.org 2014-04-28 13:26:53 +00:00
parent 4e3d760af8
commit c6661975f1
1 changed files with 60 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
src/opts/SkXfermode_opts_SSE2.cpp
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@ -283,6 +283,64 @@ static __m128i overlay_modeproc_SSE2(const __m128i& src, const __m128i& dst) {
return SkPackARGB32_SSE2(a, r, g, b);
}
static inline __m128i darken_byte_SSE2(const __m128i& sc, const __m128i& dc,
const __m128i& sa, const __m128i& da) {
__m128i sd = _mm_mullo_epi16(sc, da);
__m128i ds = _mm_mullo_epi16(dc, sa);
__m128i cmp = _mm_cmplt_epi32(sd, ds);
__m128i tmp = _mm_add_epi32(sc, dc);
__m128i ret1 = _mm_sub_epi32(tmp, SkDiv255Round_SSE2(ds));
__m128i ret2 = _mm_sub_epi32(tmp, SkDiv255Round_SSE2(sd));
__m128i ret = _mm_or_si128(_mm_and_si128(cmp, ret1),
_mm_andnot_si128(cmp, ret2));
return ret;
}
static __m128i darken_modeproc_SSE2(const __m128i& src, const __m128i& dst) {
__m128i sa = SkGetPackedA32_SSE2(src);
__m128i da = SkGetPackedA32_SSE2(dst);
__m128i a = srcover_byte_SSE2(sa, da);
__m128i r = darken_byte_SSE2(SkGetPackedR32_SSE2(src),
SkGetPackedR32_SSE2(dst), sa, da);
__m128i g = darken_byte_SSE2(SkGetPackedG32_SSE2(src),
SkGetPackedG32_SSE2(dst), sa, da);
__m128i b = darken_byte_SSE2(SkGetPackedB32_SSE2(src),
SkGetPackedB32_SSE2(dst), sa, da);
return SkPackARGB32_SSE2(a, r, g, b);
}
static inline __m128i lighten_byte_SSE2(const __m128i& sc, const __m128i& dc,
const __m128i& sa, const __m128i& da) {
__m128i sd = _mm_mullo_epi16(sc, da);
__m128i ds = _mm_mullo_epi16(dc, sa);
__m128i cmp = _mm_cmpgt_epi32(sd, ds);
__m128i tmp = _mm_add_epi32(sc, dc);
__m128i ret1 = _mm_sub_epi32(tmp, SkDiv255Round_SSE2(ds));
__m128i ret2 = _mm_sub_epi32(tmp, SkDiv255Round_SSE2(sd));
__m128i ret = _mm_or_si128(_mm_and_si128(cmp, ret1),
_mm_andnot_si128(cmp, ret2));
return ret;
}
static __m128i lighten_modeproc_SSE2(const __m128i& src, const __m128i& dst) {
__m128i sa = SkGetPackedA32_SSE2(src);
__m128i da = SkGetPackedA32_SSE2(dst);
__m128i a = srcover_byte_SSE2(sa, da);
__m128i r = lighten_byte_SSE2(SkGetPackedR32_SSE2(src),
SkGetPackedR32_SSE2(dst), sa, da);
__m128i g = lighten_byte_SSE2(SkGetPackedG32_SSE2(src),
SkGetPackedG32_SSE2(dst), sa, da);
__m128i b = lighten_byte_SSE2(SkGetPackedB32_SSE2(src),
SkGetPackedB32_SSE2(dst), sa, da);
return SkPackARGB32_SSE2(a, r, g, b);
}
static inline __m128i colordodge_byte_SSE2(const __m128i& sc, const __m128i& dc,
const __m128i& sa, const __m128i& da) {
__m128i diff = _mm_sub_epi32(sa, sc);
@ -726,8 +784,8 @@ SkXfermodeProcSIMD gSSE2XfermodeProcs[] = {
screen_modeproc_SSE2,
overlay_modeproc_SSE2,
NULL, // kDarken_Mode
NULL, // kLighten_Mode
darken_modeproc_SSE2,
lighten_modeproc_SSE2,
colordodge_modeproc_SSE2,
colorburn_modeproc_SSE2,
hardlight_modeproc_SSE2,