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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 "SkFilterShader.h" | 8 #include "SkFilterShader.h" |
9 | 9 |
10 #include "SkColorFilter.h" | 10 #include "SkColorFilter.h" |
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39 buffer.writeFlattenable(fShader); | 39 buffer.writeFlattenable(fShader); |
40 buffer.writeFlattenable(fFilter); | 40 buffer.writeFlattenable(fFilter); |
41 } | 41 } |
42 | 42 |
43 uint32_t SkFilterShader::FilterShaderContext::getFlags() const { | 43 uint32_t SkFilterShader::FilterShaderContext::getFlags() const { |
44 const SkFilterShader& filterShader = static_cast<const SkFilterShader&>(fSha
der); | 44 const SkFilterShader& filterShader = static_cast<const SkFilterShader&>(fSha
der); |
45 | 45 |
46 uint32_t shaderF = fShaderContext->getFlags(); | 46 uint32_t shaderF = fShaderContext->getFlags(); |
47 uint32_t filterF = filterShader.fFilter->getFlags(); | 47 uint32_t filterF = filterShader.fFilter->getFlags(); |
48 | 48 |
49 // if the filter doesn't support 16bit, clear the matching bit in the shader | 49 // filters don't support 16bit, so clear the matching bit in the shader |
50 if (!(filterF & SkColorFilter::kHasFilter16_Flag)) { | 50 shaderF &= ~SkShader::kHasSpan16_Flag; |
51 shaderF &= ~SkShader::kHasSpan16_Flag; | 51 |
52 } | |
53 // if the filter might change alpha, clear the opaque flag in the shader | 52 // if the filter might change alpha, clear the opaque flag in the shader |
54 if (!(filterF & SkColorFilter::kAlphaUnchanged_Flag)) { | 53 if (!(filterF & SkColorFilter::kAlphaUnchanged_Flag)) { |
55 shaderF &= ~(SkShader::kOpaqueAlpha_Flag | SkShader::kHasSpan16_Flag); | 54 shaderF &= ~SkShader::kOpaqueAlpha_Flag; |
56 } | 55 } |
57 return shaderF; | 56 return shaderF; |
58 } | 57 } |
59 | 58 |
60 SkShader::Context* SkFilterShader::onCreateContext(const ContextRec& rec, void*
storage) const { | 59 SkShader::Context* SkFilterShader::onCreateContext(const ContextRec& rec, void*
storage) const { |
61 char* shaderContextStorage = (char*)storage + sizeof(FilterShaderContext); | 60 char* shaderContextStorage = (char*)storage + sizeof(FilterShaderContext); |
62 SkShader::Context* shaderContext = fShader->createContext(rec, shaderContext
Storage); | 61 SkShader::Context* shaderContext = fShader->createContext(rec, shaderContext
Storage); |
63 if (NULL == shaderContext) { | 62 if (NULL == shaderContext) { |
64 return NULL; | 63 return NULL; |
65 } | 64 } |
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80 fShaderContext->~Context(); | 79 fShaderContext->~Context(); |
81 } | 80 } |
82 | 81 |
83 void SkFilterShader::FilterShaderContext::shadeSpan(int x, int y, SkPMColor resu
lt[], int count) { | 82 void SkFilterShader::FilterShaderContext::shadeSpan(int x, int y, SkPMColor resu
lt[], int count) { |
84 const SkFilterShader& filterShader = static_cast<const SkFilterShader&>(fSha
der); | 83 const SkFilterShader& filterShader = static_cast<const SkFilterShader&>(fSha
der); |
85 | 84 |
86 fShaderContext->shadeSpan(x, y, result, count); | 85 fShaderContext->shadeSpan(x, y, result, count); |
87 filterShader.fFilter->filterSpan(result, count, result); | 86 filterShader.fFilter->filterSpan(result, count, result); |
88 } | 87 } |
89 | 88 |
90 void SkFilterShader::FilterShaderContext::shadeSpan16(int x, int y, uint16_t res
ult[], int count) { | |
91 const SkFilterShader& filterShader = static_cast<const SkFilterShader&>(fSha
der); | |
92 | |
93 SkASSERT(fShaderContext->getFlags() & SkShader::kHasSpan16_Flag); | |
94 SkASSERT(filterShader.fFilter->getFlags() & SkColorFilter::kHasFilter16_Flag
); | |
95 | |
96 fShaderContext->shadeSpan16(x, y, result, count); | |
97 filterShader.fFilter->filterSpan16(result, count, result); | |
98 } | |
99 | |
100 #ifndef SK_IGNORE_TO_STRING | 89 #ifndef SK_IGNORE_TO_STRING |
101 void SkFilterShader::toString(SkString* str) const { | 90 void SkFilterShader::toString(SkString* str) const { |
102 str->append("SkFilterShader: ("); | 91 str->append("SkFilterShader: ("); |
103 | 92 |
104 str->append("Shader: "); | 93 str->append("Shader: "); |
105 fShader->toString(str); | 94 fShader->toString(str); |
106 str->append(" Filter: "); | 95 str->append(" Filter: "); |
107 // TODO: add "fFilter->toString(str);" once SkColorFilter::toString is added | 96 // TODO: add "fFilter->toString(str);" once SkColorFilter::toString is added |
108 | 97 |
109 this->INHERITED::toString(str); | 98 this->INHERITED::toString(str); |
110 | 99 |
111 str->append(")"); | 100 str->append(")"); |
112 } | 101 } |
113 #endif | 102 #endif |
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