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| author |  yang.zhang <yang.zhang@linaro.org> | 2015-07-30 05:37:06 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2015-07-30 05:37:06 -0700 |
| commit | 6c72d5740231f47c664a8e765a8df05cd124c88c (patch) | |
| tree | e4b9b65db3fff2df31f7e3b7d1ddae4fc698572d /src/core | |
| parent | 640898f5881df1fd56d306190608dd79b1f32044 (diff) | |
Optimize RGB16 blitH functions with NEON for ARM platform.
Here are some performance resultsi on Nexus 9:
SkRGB16BlitterBlitH_neon:
+--------+-----------+
|height | C/NEON |
+--------+-----------+
|1 | 0.888531 |
+--------+-----------+
|8 | 1.231800 |
+--------+-----------+
|18 | 1.073327 |
+--------+-----------+
|32 | 1.136991 |
+--------+-----------+
|76 | 1.174638 |
+--------+-----------+
|85 | 1.188551 |
+--------+-----------+
|120 | 1.180261 |
+--------+-----------+
|128 | 1.183726 |
+--------+-----------+
|512 | 1.220806 |
+--------+-----------+
BUG=skia:
Review URL: https://codereview.chromium.org/1229673008
Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/SkBlitter_RGB16.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/core/SkBlitter_RGB16.cpp b/src/core/SkBlitter_RGB16.cpp index 8caf908312..b481b27b57 100644 --- a/src/core/SkBlitter_RGB16.cpp +++ b/src/core/SkBlitter_RGB16.cpp @@ -27,6 +27,10 @@ extern void SkRGB16BlitterBlitV_neon(uint16_t* device, size_t deviceRB, unsigned scale, uint32_t src32); +extern void SkRGB16BlitterBlitH_neon(uint16_t* device, + int width, + unsigned scale, + uint32_t src32); #else // if we don't have neon, then our black blitter is worth the extra code #define USE_BLACK_BLITTER @@ -338,10 +342,14 @@ void SkRGB16_Opaque_Blitter::blitAntiH(int x, int y, uint32_t src32 = srcExpanded * scale5; scale5 = 32 - scale5; // now we can use it on the device int n = count; +#if SK_ARM_NEON_IS_ALWAYS && defined(SK_CPU_LENDIAN) + SkRGB16BlitterBlitH_neon(device, n, scale5, src32); +#else do { uint32_t dst32 = SkExpand_rgb_16(*device) * scale5; *device++ = SkCompact_rgb_16((src32 + dst32) >> 5); } while (--n != 0); +#endif goto DONE; } } @@ -601,10 +609,14 @@ void SkRGB16_Blitter::blitAntiH(int x, int y, unsigned scale5 = SkAlpha255To256(aa) * scale >> (8 + 3); uint32_t src32 = srcExpanded * scale5; scale5 = 32 - scale5; +#if SK_ARM_NEON_IS_ALWAYS && defined(SK_CPU_LENDIAN) + SkRGB16BlitterBlitH_neon(device, count, scale5, src32); +#else do { uint32_t dst32 = SkExpand_rgb_16(*device) * scale5; *device++ = SkCompact_rgb_16((src32 + dst32) >> 5); } while (--count != 0); +#endif continue; } device += count; |