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Side by Side Diff: src/effects/SkLumaColorFilter.cpp

Issue 582963002: Solo gp (Closed) Base URL: https://skia.googlesource.com/skia.git@no_peb
Patch Set: rebase Created 6 years, 3 months ago
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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/GrGLProcessor.h"
15 #include "gl/builders/GrGLProgramBuilder.h" 15 #include "gl/builders/GrGLProgramBuilder.h"
16 #include "GrContext.h" 16 #include "GrContext.h"
17 #include "GrTBackendEffectFactory.h" 17 #include "GrTBackendProcessorFactory.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 /*
26 * While LuminanceToAlpha is defined to operate on un-premultiplied 26 * While LuminanceToAlpha is defined to operate on un-premultiplied
27 * inputs, due to the final alpha scaling it can be computed based on 27 * inputs, due to the final alpha scaling it can be computed based on
(...skipping 25 matching lines...) Expand all
53 53
54 void SkLumaColorFilter::flatten(SkWriteBuffer&) const {} 54 void SkLumaColorFilter::flatten(SkWriteBuffer&) const {}
55 55
56 #ifndef SK_IGNORE_TO_STRING 56 #ifndef SK_IGNORE_TO_STRING
57 void SkLumaColorFilter::toString(SkString* str) const { 57 void SkLumaColorFilter::toString(SkString* str) const {
58 str->append("SkLumaColorFilter "); 58 str->append("SkLumaColorFilter ");
59 } 59 }
60 #endif 60 #endif
61 61
62 #if SK_SUPPORT_GPU 62 #if SK_SUPPORT_GPU
63 class LumaColorFilterEffect : public GrEffect { 63 class LumaColorFilterEffect : public GrFragmentProcessor {
64 public: 64 public:
65 static GrEffect* Create() { 65 static GrFragmentProcessor* Create() {
66 GR_CREATE_STATIC_EFFECT(gLumaEffect, LumaColorFilterEffect, ()); 66 GR_CREATE_STATIC_FRAGMENT_PROCESSOR(gLumaEffect, LumaColorFilterEffect, ());
67 return SkRef(gLumaEffect); 67 return SkRef(gLumaEffect);
68 } 68 }
69 69
70 static const char* Name() { return "Luminance-to-Alpha"; } 70 static const char* Name() { return "Luminance-to-Alpha"; }
71 71
72 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { 72 virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERR IDE {
73 return GrTBackendEffectFactory<LumaColorFilterEffect>::getInstance(); 73 return GrTBackendFragmentProcessorFactory<LumaColorFilterEffect>::getIns tance();
74 } 74 }
75 75
76 virtual void getConstantColorComponents(GrColor* color, 76 virtual void getConstantColorComponents(GrColor* color,
77 uint32_t* validFlags) const SK_OVERR IDE { 77 uint32_t* validFlags) const SK_OVERR IDE {
78 // The output is always black. 78 // The output is always black.
79 *color = GrColorPackRGBA(0, 0, 0, GrColorUnpackA(*color)); 79 *color = GrColorPackRGBA(0, 0, 0, GrColorUnpackA(*color));
80 *validFlags = kRGB_GrColorComponentFlags; 80 *validFlags = kRGB_GrColorComponentFlags;
81 } 81 }
82 82
83 class GLEffect : public GrGLEffect { 83 class GLProcessor : public GrGLFragmentProcessor {
84 public: 84 public:
85 GLEffect(const GrBackendEffectFactory& factory, 85 GLProcessor(const GrBackendProcessorFactory& factory,
86 const GrEffect&) 86 const GrProcessor&)
87 : INHERITED(factory) { 87 : INHERITED(factory) {
88 } 88 }
89 89
90 static void GenKey(const GrEffect&, const GrGLCaps&, GrEffectKeyBuilder* b) {} 90 static void GenKey(const GrProcessor&, const GrGLCaps&, GrProcessorKeyBu ilder* b) {}
91 91
92 virtual void emitCode(GrGLProgramBuilder* builder, 92 virtual void emitCode(GrGLProgramBuilder* builder,
93 const GrEffect&, 93 const GrFragmentProcessor&,
94 const GrEffectKey&, 94 const GrProcessorKey&,
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 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBui lder(); 103 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBui lder();
104 fsBuilder->codeAppendf("\tfloat luma = dot(vec3(%f, %f, %f), %s.rgb) ;\n", 104 fsBuilder->codeAppendf("\tfloat luma = dot(vec3(%f, %f, %f), %s.rgb) ;\n",
105 SK_ITU_BT709_LUM_COEFF_R, 105 SK_ITU_BT709_LUM_COEFF_R,
106 SK_ITU_BT709_LUM_COEFF_G, 106 SK_ITU_BT709_LUM_COEFF_G,
107 SK_ITU_BT709_LUM_COEFF_B, 107 SK_ITU_BT709_LUM_COEFF_B,
108 inputColor); 108 inputColor);
109 fsBuilder->codeAppendf("\t%s = vec4(0, 0, 0, luma);\n", 109 fsBuilder->codeAppendf("\t%s = vec4(0, 0, 0, luma);\n",
110 outputColor); 110 outputColor);
111 111
112 } 112 }
113 113
114 private: 114 private:
115 typedef GrGLEffect INHERITED; 115 typedef GrGLFragmentProcessor INHERITED;
116 }; 116 };
117 117
118 private: 118 private:
119 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE { 119 virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE {
120 return true; 120 return true;
121 } 121 }
122 }; 122 };
123 123
124 GrEffect* SkLumaColorFilter::asNewEffect(GrContext*) const { 124 GrFragmentProcessor* SkLumaColorFilter::asFragmentProcessor(GrContext*) const {
125 return LumaColorFilterEffect::Create(); 125 return LumaColorFilterEffect::Create();
126 } 126 }
127 #endif 127 #endif
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