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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 "SkLumaColorFilter.h" | 8 #include "SkLumaColorFilter.h" |
9 | 9 |
10 #include "SkColorPriv.h" | 10 #include "SkColorPriv.h" |
11 #include "SkString.h" | 11 #include "SkString.h" |
12 | 12 |
13 #if SK_SUPPORT_GPU | 13 #if SK_SUPPORT_GPU |
14 #include "gl/GrGLEffect.h" | 14 #include "gl/GrGLEffect.h" |
15 #include "gl/GrGLShaderBuilder.h" | 15 #include "gl/builders/GrGLProgramBuilder.h" |
16 #include "GrContext.h" | 16 #include "GrContext.h" |
17 #include "GrTBackendEffectFactory.h" | 17 #include "GrTBackendEffectFactory.h" |
18 #endif | 18 #endif |
19 | 19 |
20 void SkLumaColorFilter::filterSpan(const SkPMColor src[], int count, | 20 void SkLumaColorFilter::filterSpan(const SkPMColor src[], int count, |
21 SkPMColor dst[]) const { | 21 SkPMColor dst[]) const { |
22 for (int i = 0; i < count; ++i) { | 22 for (int i = 0; i < count; ++i) { |
23 SkPMColor c = src[i]; | 23 SkPMColor c = src[i]; |
24 | 24 |
25 /* | 25 /* |
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82 | 82 |
83 class GLEffect : public GrGLEffect { | 83 class GLEffect : public GrGLEffect { |
84 public: | 84 public: |
85 GLEffect(const GrBackendEffectFactory& factory, | 85 GLEffect(const GrBackendEffectFactory& factory, |
86 const GrDrawEffect&) | 86 const GrDrawEffect&) |
87 : INHERITED(factory) { | 87 : INHERITED(factory) { |
88 } | 88 } |
89 | 89 |
90 static void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuil
der* b) {} | 90 static void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuil
der* b) {} |
91 | 91 |
92 virtual void emitCode(GrGLShaderBuilder* builder, | 92 virtual void emitCode(GrGLProgramBuilder* builder, |
93 const GrDrawEffect&, | 93 const GrDrawEffect&, |
94 const GrEffectKey&, | 94 const GrEffectKey&, |
95 const char* outputColor, | 95 const char* outputColor, |
96 const char* inputColor, | 96 const char* inputColor, |
97 const TransformedCoordsArray&, | 97 const TransformedCoordsArray&, |
98 const TextureSamplerArray&) SK_OVERRIDE { | 98 const TextureSamplerArray&) SK_OVERRIDE { |
99 if (NULL == inputColor) { | 99 if (NULL == inputColor) { |
100 inputColor = "vec4(1)"; | 100 inputColor = "vec4(1)"; |
101 } | 101 } |
102 | 102 |
103 builder->fsCodeAppendf("\tfloat luma = dot(vec3(%f, %f, %f), %s.rgb)
;\n", | 103 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBui
lder(); |
| 104 fsBuilder->codeAppendf("\tfloat luma = dot(vec3(%f, %f, %f), %s.rgb)
;\n", |
104 SK_ITU_BT709_LUM_COEFF_R, | 105 SK_ITU_BT709_LUM_COEFF_R, |
105 SK_ITU_BT709_LUM_COEFF_G, | 106 SK_ITU_BT709_LUM_COEFF_G, |
106 SK_ITU_BT709_LUM_COEFF_B, | 107 SK_ITU_BT709_LUM_COEFF_B, |
107 inputColor); | 108 inputColor); |
108 builder->fsCodeAppendf("\t%s = vec4(0, 0, 0, luma);\n", | 109 fsBuilder->codeAppendf("\t%s = vec4(0, 0, 0, luma);\n", |
109 outputColor); | 110 outputColor); |
110 | 111 |
111 } | 112 } |
112 | 113 |
113 private: | 114 private: |
114 typedef GrGLEffect INHERITED; | 115 typedef GrGLEffect INHERITED; |
115 }; | 116 }; |
116 | 117 |
117 private: | 118 private: |
118 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { | 119 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { |
119 return true; | 120 return true; |
120 } | 121 } |
121 }; | 122 }; |
122 | 123 |
123 GrEffect* SkLumaColorFilter::asNewEffect(GrContext*) const { | 124 GrEffect* SkLumaColorFilter::asNewEffect(GrContext*) const { |
124 return LumaColorFilterEffect::Create(); | 125 return LumaColorFilterEffect::Create(); |
125 } | 126 } |
126 #endif | 127 #endif |
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