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| 1 /* | 1 /* |
| 2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 #include "SkBlitRow.h" | 8 #include "SkBlitRow.h" |
| 9 #include "SkBlitMask.h" | 9 #include "SkBlitMask.h" |
| 10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
| 11 #include "SkUtils.h" | 11 #include "SkUtils.h" |
| 12 | 12 |
| 13 #define UNROLL | 13 #define UNROLL |
| 14 | 14 |
| 15 static void S32_Opaque_BlitRow32(SkPMColor* SK_RESTRICT dst, | 15 static void S32_Opaque_BlitRow32(SkPMColor* SK_RESTRICT dst, |
| 16 const SkPMColor* SK_RESTRICT src, | 16 const SkPMColor* SK_RESTRICT src, |
| 17 int count, U8CPU alpha) { | 17 int count, U8CPU alpha) { |
| 18 SkASSERT(255 == alpha); | 18 SkASSERT(255 == alpha); |
| 19 sk_memcpy32(dst, src, count); | 19 memcpy(dst, src, count * 4); |
| 20 } | 20 } |
| 21 | 21 |
| 22 static void S32_Blend_BlitRow32(SkPMColor* SK_RESTRICT dst, | 22 static void S32_Blend_BlitRow32(SkPMColor* SK_RESTRICT dst, |
| 23 const SkPMColor* SK_RESTRICT src, | 23 const SkPMColor* SK_RESTRICT src, |
| 24 int count, U8CPU alpha) { | 24 int count, U8CPU alpha) { |
| 25 SkASSERT(alpha <= 255); | 25 SkASSERT(alpha <= 255); |
| 26 if (count > 0) { | 26 if (count > 0) { |
| 27 unsigned src_scale = SkAlpha255To256(alpha); | 27 unsigned src_scale = SkAlpha255To256(alpha); |
| 28 unsigned dst_scale = 256 - src_scale; | 28 unsigned dst_scale = 256 - src_scale; |
| 29 | 29 |
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| 153 invA += invA >> 7; | 153 invA += invA >> 7; |
| 154 SkASSERT(invA < 256); // We've already handled alpha == 0 above. | 154 SkASSERT(invA < 256); // We've already handled alpha == 0 above. |
| 155 | 155 |
| 156 Sk16h colorHighAndRound = Sk4px::DupPMColor(color).widenHi() + Sk16h(128); | 156 Sk16h colorHighAndRound = Sk4px::DupPMColor(color).widenHi() + Sk16h(128); |
| 157 Sk16b invA_16x(invA); | 157 Sk16b invA_16x(invA); |
| 158 | 158 |
| 159 Sk4px::MapSrc(count, dst, src, [&](const Sk4px& src4) -> Sk4px { | 159 Sk4px::MapSrc(count, dst, src, [&](const Sk4px& src4) -> Sk4px { |
| 160 return (src4 * invA_16x).addNarrowHi(colorHighAndRound); | 160 return (src4 * invA_16x).addNarrowHi(colorHighAndRound); |
| 161 }); | 161 }); |
| 162 } | 162 } |
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