diff options
Diffstat (limited to 'src/opts/SkXfermode_opts_SSE2.cpp')
| -rw-r--r-- | src/opts/SkXfermode_opts_SSE2.cpp | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/src/opts/SkXfermode_opts_SSE2.cpp b/src/opts/SkXfermode_opts_SSE2.cpp index d1a2632fdb..817f777bc4 100644 --- a/src/opts/SkXfermode_opts_SSE2.cpp +++ b/src/opts/SkXfermode_opts_SSE2.cpp @@ -229,6 +229,43 @@ static __m128i screen_modeproc_SSE2(const __m128i& src, const __m128i& dst) { return SkPackARGB32_SSE2(a, r, g, b); } +// Portable version overlay_byte() is in SkXfermode.cpp. +static inline __m128i overlay_byte_SSE2(const __m128i& sc, const __m128i& dc, + const __m128i& sa, const __m128i& da) { + __m128i ida = _mm_sub_epi32(_mm_set1_epi32(255), da); + __m128i tmp1 = _mm_mullo_epi16(sc, ida); + __m128i isa = _mm_sub_epi32(_mm_set1_epi32(255), sa); + __m128i tmp2 = _mm_mullo_epi16(dc, isa); + __m128i tmp = _mm_add_epi32(tmp1, tmp2); + + __m128i cmp = _mm_cmpgt_epi32(_mm_slli_epi32(dc, 1), da); + __m128i rc1 = _mm_slli_epi32(sc, 1); // 2 * sc + rc1 = Multiply32_SSE2(rc1, dc); // *dc + + __m128i rc2 = _mm_mullo_epi16(sa, da); // sa * da + __m128i tmp3 = _mm_slli_epi32(_mm_sub_epi32(da, dc), 1); // 2 * (da - dc) + tmp3 = Multiply32_SSE2(tmp3, _mm_sub_epi32(sa, sc)); // * (sa - sc) + rc2 = _mm_sub_epi32(rc2, tmp3); + + __m128i rc = _mm_or_si128(_mm_andnot_si128(cmp, rc1), + _mm_and_si128(cmp, rc2)); + return clamp_div255round_SSE2(_mm_add_epi32(rc, tmp)); +} + +static __m128i overlay_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 = overlay_byte_SSE2(SkGetPackedR32_SSE2(src), + SkGetPackedR32_SSE2(dst), sa, da); + __m128i g = overlay_byte_SSE2(SkGetPackedG32_SSE2(src), + SkGetPackedG32_SSE2(dst), sa, da); + __m128i b = overlay_byte_SSE2(SkGetPackedB32_SSE2(src), + SkGetPackedB32_SSE2(dst), sa, da); + return SkPackARGB32_SSE2(a, r, g, b); +} + //////////////////////////////////////////////////////////////////////////////// typedef __m128i (*SkXfermodeProcSIMD)(const __m128i& src, const __m128i& dst); @@ -384,7 +421,7 @@ SkXfermodeProcSIMD gSSE2XfermodeProcs[] = { modulate_modeproc_SSE2, screen_modeproc_SSE2, - NULL, // kOverlay_Mode + overlay_modeproc_SSE2, NULL, // kDarken_Mode NULL, // kLighten_Mode NULL, // kColorDodge_Mode |