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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2013 Google Inc. | 3 * Copyright 2013 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #include "GrBlend.h" | 9 #include "GrBlend.h" |
10 | 10 |
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51 | 51 |
52 static inline bool valid_color(uint32_t compFlags) { | 52 static inline bool valid_color(uint32_t compFlags) { |
53 return (kRGBA_GrColorComponentFlags & compFlags) == kRGBA_GrColorComponentF
lags; | 53 return (kRGBA_GrColorComponentFlags & compFlags) == kRGBA_GrColorComponentF
lags; |
54 } | 54 } |
55 | 55 |
56 static GrColor simplify_blend_term(GrBlendCoeff* srcCoeff, | 56 static GrColor simplify_blend_term(GrBlendCoeff* srcCoeff, |
57 GrColor srcColor, uint32_t srcCompFlags, | 57 GrColor srcColor, uint32_t srcCompFlags, |
58 GrColor dstColor, uint32_t dstCompFlags, | 58 GrColor dstColor, uint32_t dstCompFlags, |
59 GrColor constantColor) { | 59 GrColor constantColor) { |
60 | 60 |
61 GrAssert(!GrBlendCoeffRefsSrc(*srcCoeff)); | 61 SkASSERT(!GrBlendCoeffRefsSrc(*srcCoeff)); |
62 GrAssert(NULL != srcCoeff); | 62 SkASSERT(NULL != srcCoeff); |
63 | 63 |
64 // Check whether srcCoeff can be reduced to kOne or kZero based on known col
or inputs. | 64 // Check whether srcCoeff can be reduced to kOne or kZero based on known col
or inputs. |
65 // We could pick out the coeff r,g,b,a values here and use them to compute t
he blend term color, | 65 // We could pick out the coeff r,g,b,a values here and use them to compute t
he blend term color, |
66 // if possible, below but that is not implemented now. | 66 // if possible, below but that is not implemented now. |
67 switch (*srcCoeff) { | 67 switch (*srcCoeff) { |
68 case kIDC_GrBlendCoeff: | 68 case kIDC_GrBlendCoeff: |
69 dstColor = ~dstColor; // fallthrough | 69 dstColor = ~dstColor; // fallthrough |
70 case kDC_GrBlendCoeff: | 70 case kDC_GrBlendCoeff: |
71 if (valid_color(dstCompFlags)) { | 71 if (valid_color(dstCompFlags)) { |
72 if (0xffffffff == dstColor) { | 72 if (0xffffffff == dstColor) { |
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145 srcColor, srcCompFlags, | 145 srcColor, srcCompFlags, |
146 constantColor); | 146 constantColor); |
147 *dstCoeff = swap_coeff_src_dst(spoofedCoeff); | 147 *dstCoeff = swap_coeff_src_dst(spoofedCoeff); |
148 | 148 |
149 if (GrColor_ILLEGAL != srcTermColor && GrColor_ILLEGAL != dstTermColor) { | 149 if (GrColor_ILLEGAL != srcTermColor && GrColor_ILLEGAL != dstTermColor) { |
150 return add_colors(srcTermColor, dstTermColor); | 150 return add_colors(srcTermColor, dstTermColor); |
151 } else { | 151 } else { |
152 return GrColor_ILLEGAL; | 152 return GrColor_ILLEGAL; |
153 } | 153 } |
154 } | 154 } |
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