SSE2 implementation of S32_D565_Opaque_Dither
Run benchmarks with command line option "--forceDither true". The result
shows that all benchmarks exercised S32_D565_Opaque_Dither benefit from
this SSE2 optimization. Here are the data on i7-3770:
before after
constXTile_MM_filter 900.93 217.75 75.83%
constXTile_CC_filter_scale 907.59 225.65 75.14%
constXTile_RR_filter 903.33 219.41 75.71%
constXTile_MM_scale 902.45 221.46 75.46%
constXTile_CC 898.55 218.37 75.70%
constXTile_RR_scale 902.69 222.35 75.37%
repeatTile_4444_X 938.53 240.49 74.38%
gradient_radial2_mirror 16999.49 11540.39 32.11%
gradient_radial2_clamp_hicolor 17943.38 12501.71 30.33%
gradient_radial2_clamp 17816.36 12492.04 29.88%
bitmaprect_FF_filter_trans 47.81 10.98 77.03%
bitmaprect_FF_nofilter_trans 47.79 10.91 77.18%
bitmaprect_FF_filter_identity 47.74 10.89 77.18%
bitmaprect_FF_nofilter_identity 47.83 10.89 77.24%
bitmap_4444_update_scale_rotate_bilerp 100.45 76.84 23.50%
bitmap_4444_update_volatile_scale_rotate_bilerp 100.80 76.70 23.91%
bitmap_4444_scale_rotate_bilerp 100.43 77.18 23.15%
bitmap_4444_update_scale_bilerp 79.00 49.03 37.93%
bitmap_4444_update_volatile_scale_bilerp 78.90 48.87 38.06%
bitmap_4444_scale_bilerp 78.92 48.81 38.16%
bitmap_4444_update 42.19 11.53 72.68%
bitmap_4444_update_volatile 42.28 11.49 72.82%
bitmap_a8 60.37 29.75 50.72%
bitmap_4444 42.19 11.52 72.69%
BUG=
R=mtklein@google.com
Author: qiankun.miao@intel.com
Review URL: https://codereview.chromium.org/181293002
git-svn-id: http://skia.googlecode.com/svn/trunk@13698 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
commit-bot@chromium.org
parent
4cd9e2169e
commit
275804782f
@ -10,6 +10,7 @@
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#include "SkBitmapProcState_opts_SSE2.h"
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#include "SkColorPriv.h"
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#include "SkColor_opts_SSE2.h"
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#include "SkDither.h"
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#include "SkUtils.h"
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#include <emmintrin.h>
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@ -1051,3 +1052,117 @@ void S32A_D565_Opaque_SSE2(uint16_t* SK_RESTRICT dst,
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} while (--count != 0);
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}
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}
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void S32_D565_Opaque_Dither_SSE2(uint16_t* SK_RESTRICT dst,
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const SkPMColor* SK_RESTRICT src,
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int count, U8CPU alpha, int x, int y) {
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SkASSERT(255 == alpha);
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if (count <= 0) {
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return;
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}
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if (count >= 8) {
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while (((size_t)dst & 0x0F) != 0) {
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DITHER_565_SCAN(y);
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SkPMColor c = *src++;
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SkPMColorAssert(c);
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unsigned dither = DITHER_VALUE(x);
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*dst++ = SkDitherRGB32To565(c, dither);
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DITHER_INC_X(x);
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count--;
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}
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unsigned short dither_value[8];
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__m128i dither;
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#ifdef ENABLE_DITHER_MATRIX_4X4
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const uint8_t* dither_scan = gDitherMatrix_3Bit_4X4[(y) & 3];
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dither_value[0] = dither_value[4] = dither_scan[(x) & 3];
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dither_value[1] = dither_value[5] = dither_scan[(x + 1) & 3];
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dither_value[2] = dither_value[6] = dither_scan[(x + 2) & 3];
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dither_value[3] = dither_value[7] = dither_scan[(x + 3) & 3];
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#else
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const uint16_t dither_scan = gDitherMatrix_3Bit_16[(y) & 3];
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dither_value[0] = dither_value[4] = (dither_scan
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>> (((x) & 3) << 2)) & 0xF;
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dither_value[1] = dither_value[5] = (dither_scan
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>> (((x + 1) & 3) << 2)) & 0xF;
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dither_value[2] = dither_value[6] = (dither_scan
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>> (((x + 2) & 3) << 2)) & 0xF;
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dither_value[3] = dither_value[7] = (dither_scan
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>> (((x + 3) & 3) << 2)) & 0xF;
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#endif
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dither = _mm_loadu_si128((__m128i*) dither_value);
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const __m128i* s = reinterpret_cast<const __m128i*>(src);
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__m128i* d = reinterpret_cast<__m128i*>(dst);
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while (count >= 8) {
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// Load 8 pixels of src.
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__m128i src_pixel1 = _mm_loadu_si128(s++);
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__m128i src_pixel2 = _mm_loadu_si128(s++);
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// Extract R from src.
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__m128i sr1 = _mm_slli_epi32(src_pixel1, (24 - SK_R32_SHIFT));
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sr1 = _mm_srli_epi32(sr1, 24);
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__m128i sr2 = _mm_slli_epi32(src_pixel2, (24 - SK_R32_SHIFT));
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sr2 = _mm_srli_epi32(sr2, 24);
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__m128i sr = _mm_packs_epi32(sr1, sr2);
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// SkDITHER_R32To565(sr, dither)
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__m128i sr_offset = _mm_srli_epi16(sr, 5);
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sr = _mm_add_epi16(sr, dither);
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sr = _mm_sub_epi16(sr, sr_offset);
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sr = _mm_srli_epi16(sr, SK_R32_BITS - SK_R16_BITS);
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// Extract G from src.
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__m128i sg1 = _mm_slli_epi32(src_pixel1, (24 - SK_G32_SHIFT));
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sg1 = _mm_srli_epi32(sg1, 24);
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__m128i sg2 = _mm_slli_epi32(src_pixel2, (24 - SK_G32_SHIFT));
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sg2 = _mm_srli_epi32(sg2, 24);
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__m128i sg = _mm_packs_epi32(sg1, sg2);
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// SkDITHER_R32To565(sg, dither)
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__m128i sg_offset = _mm_srli_epi16(sg, 6);
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sg = _mm_add_epi16(sg, _mm_srli_epi16(dither, 1));
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sg = _mm_sub_epi16(sg, sg_offset);
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sg = _mm_srli_epi16(sg, SK_G32_BITS - SK_G16_BITS);
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// Extract B from src.
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__m128i sb1 = _mm_slli_epi32(src_pixel1, (24 - SK_B32_SHIFT));
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sb1 = _mm_srli_epi32(sb1, 24);
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__m128i sb2 = _mm_slli_epi32(src_pixel2, (24 - SK_B32_SHIFT));
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sb2 = _mm_srli_epi32(sb2, 24);
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__m128i sb = _mm_packs_epi32(sb1, sb2);
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// SkDITHER_R32To565(sb, dither)
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__m128i sb_offset = _mm_srli_epi16(sb, 5);
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sb = _mm_add_epi16(sb, dither);
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sb = _mm_sub_epi16(sb, sb_offset);
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sb = _mm_srli_epi16(sb, SK_B32_BITS - SK_B16_BITS);
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// Pack and store 16-bit dst pixel.
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__m128i d_pixel = SkPackRGB16_SSE(sr, sg, sb);
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_mm_store_si128(d++, d_pixel);
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count -= 8;
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x += 8;
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}
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src = reinterpret_cast<const SkPMColor*>(s);
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dst = reinterpret_cast<uint16_t*>(d);
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}
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if (count > 0) {
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DITHER_565_SCAN(y);
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do {
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SkPMColor c = *src++;
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SkPMColorAssert(c);
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unsigned dither = DITHER_VALUE(x);
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*dst++ = SkDitherRGB32To565(c, dither);
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DITHER_INC_X(x);
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} while (--count != 0);
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}
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}
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@ -35,3 +35,6 @@ void S32_D565_Opaque_SSE2(uint16_t* SK_RESTRICT dst,
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void S32A_D565_Opaque_SSE2(uint16_t* SK_RESTRICT dst,
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const SkPMColor* SK_RESTRICT src,
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int count, U8CPU alpha, int /*x*/, int /*y*/);
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void S32_D565_Opaque_Dither_SSE2(uint16_t* SK_RESTRICT dst,
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const SkPMColor* SK_RESTRICT src,
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int count, U8CPU alpha, int x, int y);
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@ -170,7 +170,7 @@ static SkBlitRow::Proc platform_16_procs[] = {
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NULL, // S32_D565_Blend
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S32A_D565_Opaque_SSE2, // S32A_D565_Opaque
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NULL, // S32A_D565_Blend
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NULL, // S32_D565_Opaque_Dither
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S32_D565_Opaque_Dither_SSE2, // S32_D565_Opaque_Dither
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NULL, // S32_D565_Blend_Dither
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NULL, // S32A_D565_Opaque_Dither
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NULL, // S32A_D565_Blend_Dither
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