diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/blitter/32bpp_sse2.cpp | 49 | ||||
| -rw-r--r-- | src/blitter/32bpp_ssse3.cpp | 45 |
2 files changed, 73 insertions, 21 deletions
diff --git a/src/blitter/32bpp_sse2.cpp b/src/blitter/32bpp_sse2.cpp index 52f37d690..d515d428d 100644 --- a/src/blitter/32bpp_sse2.cpp +++ b/src/blitter/32bpp_sse2.cpp @@ -44,7 +44,8 @@ inline void Blitter_32bppSSE2::Draw(const Blitter::BlitterParams *bp, ZoomLevel } /* Load these variables into register before loop. */ - const __m128i clear_hi = CLEAR_HIGH_BYTE_MASK; + const __m128i clear_hi = CLEAR_HIGH_BYTE_MASK; + const __m128i tr_nom_base = TRANSPARENT_NOM_BASE; for (int y = bp->height; y != 0; y--) { Colour *dst = dst_line; @@ -143,18 +144,44 @@ inline void Blitter_32bppSSE2::Draw(const Blitter::BlitterParams *bp, ZoomLevel src_mv_line += si->sprite_width; break; } - case BM_TRANSPARENT: - /* Make the current colour a bit more black, so it looks like this image is transparent */ - for (int x = bp->width; x != 0; x--) { - if (src->a == 255) { - *dst = MakeTransparent(*dst, 3, 4); - } else { - *dst = MakeTransparent(*dst, (256 * 4 - src->a), 256 * 4); - } - dst++; - src++; + case BM_TRANSPARENT: { + /* Make the current colour a bit more black, so it looks like this image is transparent. + * rgb = rgb * ((256/4) * 4 - (alpha/4)) / ((256/4) * 4) + */ + __m128i srcABCD = _mm_loadu_si128((const __m128i*) src); + __m128i dstABCD = _mm_loadu_si128((__m128i*) dst); + for (uint x = (uint) bp->width / 2; x > 0; x--) { + __m128i srcAB = _mm_unpacklo_epi8(srcABCD, _mm_setzero_si128()); + __m128i dstAB = _mm_unpacklo_epi8(dstABCD, _mm_setzero_si128()); + __m128i dstCD = _mm_unpackhi_epi8(dstABCD, _mm_setzero_si128()); + __m128i alphaAB = _mm_shufflelo_epi16(srcAB, 0x3F); + alphaAB = _mm_shufflehi_epi16(alphaAB, 0x3F); + alphaAB = _mm_srli_epi16(alphaAB, 2); // Reduce to 64 levels of shades so the max value fits in 16 bits. + __m128i nom = _mm_sub_epi16(tr_nom_base, alphaAB); + dstAB = _mm_mullo_epi16(dstAB, nom); + dstAB = _mm_srli_epi16(dstAB, 8); + dstAB = _mm_packus_epi16(dstAB, dstCD); + Colour *old_dst = dst; + src += 2; + dst += 2; + dstABCD = _mm_loadu_si128((__m128i*) dst); + _mm_storeu_si128((__m128i *) old_dst, dstAB); + srcABCD = _mm_loadu_si128((const __m128i*) src); + } + if (bp->width & 1) { + __m128i srcAB = _mm_unpacklo_epi8(srcABCD, _mm_setzero_si128()); + __m128i dstAB = _mm_unpacklo_epi8(dstABCD, _mm_setzero_si128()); + __m128i alphaAB = _mm_shufflelo_epi16(srcAB, 0x3F); + alphaAB = _mm_shufflehi_epi16(alphaAB, 0x3F); + alphaAB = _mm_srli_epi16(alphaAB, 2); + __m128i nom = _mm_sub_epi16(tr_nom_base, alphaAB); + dstAB = _mm_mullo_epi16(dstAB, nom); + dstAB = _mm_srli_epi16(dstAB, 8); + dstAB = _mm_packus_epi16(dstAB, dstAB); + (*dst).data = EXTR32(dstAB, 0); } break; + } } src_rgba_line = (const Colour*) ((const byte*) src_rgba_line + si->sprite_line_size); diff --git a/src/blitter/32bpp_ssse3.cpp b/src/blitter/32bpp_ssse3.cpp index eac4e8c11..531262162 100644 --- a/src/blitter/32bpp_ssse3.cpp +++ b/src/blitter/32bpp_ssse3.cpp @@ -56,6 +56,7 @@ inline void Blitter_32bppSSSE3::Draw(const Blitter::BlitterParams *bp, ZoomLevel const __m128i ob_check = OVERBRIGHT_PRESENCE_MASK; const __m128i ob_mask = OVERBRIGHT_VALUE_MASK; const __m128i ob_cm = OVERBRIGHT_CONTROL_MASK; + const __m128i tr_nom_base = TRANSPARENT_NOM_BASE; for (int y = bp->height; y != 0; y--) { Colour *dst = dst_line; @@ -199,18 +200,42 @@ inline void Blitter_32bppSSSE3::Draw(const Blitter::BlitterParams *bp, ZoomLevel src_mv_line += si->sprite_width; break; } - case BM_TRANSPARENT: - /* Make the current colour a bit more black, so it looks like this image is transparent */ - for (int x = bp->width; x != 0; x--) { - if (src->a == 255) { - *dst = MakeTransparent(*dst, 3, 4); - } else { - *dst = MakeTransparent(*dst, (256 * 4 - src->a), 256 * 4); - } - dst++; - src++; + case BM_TRANSPARENT: { + /* Make the current colour a bit more black, so it looks like this image is transparent. + * rgb = rgb * ((256/4) * 4 - (alpha/4)) / ((256/4) * 4) + */ + __m128i srcABCD = _mm_loadu_si128((const __m128i*) src); + __m128i dstABCD = _mm_loadu_si128((__m128i*) dst); + for (uint x = (uint) bp->width / 2; x > 0; x--) { + __m128i srcAB = _mm_unpacklo_epi8(srcABCD, _mm_setzero_si128()); + __m128i dstAB = _mm_unpacklo_epi8(dstABCD, _mm_setzero_si128()); + __m128i dstCD = _mm_unpackhi_epi8(dstABCD, _mm_setzero_si128()); + __m128i alphaAB = _mm_shuffle_epi8(srcAB, a_cm); + alphaAB = _mm_srli_epi16(alphaAB, 2); // Reduce to 64 levels of shades so the max value fits in 16 bits. + __m128i nom = _mm_sub_epi16(tr_nom_base, alphaAB); + dstAB = _mm_mullo_epi16(dstAB, nom); + dstAB = _mm_srli_epi16(dstAB, 8); + dstAB = _mm_packus_epi16(dstAB, dstCD); + Colour *old_dst = dst; + src += 2; + dst += 2; + dstABCD = _mm_loadu_si128((__m128i*) dst); + _mm_storeu_si128((__m128i *) old_dst, dstAB); + srcABCD = _mm_loadu_si128((const __m128i*) src); + } + if (bp->width & 1) { + __m128i srcAB = _mm_unpacklo_epi8(srcABCD, _mm_setzero_si128()); + __m128i dstAB = _mm_unpacklo_epi8(dstABCD, _mm_setzero_si128()); + __m128i alphaAB = _mm_shuffle_epi8(srcAB, a_cm); + alphaAB = _mm_srli_epi16(alphaAB, 2); + __m128i nom = _mm_sub_epi16(tr_nom_base, alphaAB); + dstAB = _mm_mullo_epi16(dstAB, nom); + dstAB = _mm_srli_epi16(dstAB, 8); + dstAB = _mm_packus_epi16(dstAB, dstAB); + (*dst).data = EXTR32(dstAB, 0); } break; + } } src_rgba_line = (const Colour*) ((const byte*) src_rgba_line + si->sprite_line_size); |