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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 "SkAlphaThresholdFilter.h" | 8 #include "SkAlphaThresholdFilter.h" |
9 #include "SkBitmap.h" | 9 #include "SkBitmap.h" |
10 #include "SkDevice.h" | 10 #include "SkDevice.h" |
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52 #include "GrCoordTransform.h" | 52 #include "GrCoordTransform.h" |
53 #include "GrFragmentProcessor.h" | 53 #include "GrFragmentProcessor.h" |
54 #include "GrInvariantOutput.h" | 54 #include "GrInvariantOutput.h" |
55 #include "GrTextureAccess.h" | 55 #include "GrTextureAccess.h" |
56 #include "effects/GrPorterDuffXferProcessor.h" | 56 #include "effects/GrPorterDuffXferProcessor.h" |
57 | 57 |
58 #include "SkGr.h" | 58 #include "SkGr.h" |
59 | 59 |
60 #include "gl/GrGLFragmentProcessor.h" | 60 #include "gl/GrGLFragmentProcessor.h" |
61 #include "gl/builders/GrGLProgramBuilder.h" | 61 #include "gl/builders/GrGLProgramBuilder.h" |
| 62 #include "glsl/GrGLSLProgramDataManager.h" |
62 | 63 |
63 class AlphaThresholdEffect : public GrFragmentProcessor { | 64 class AlphaThresholdEffect : public GrFragmentProcessor { |
64 | 65 |
65 public: | 66 public: |
66 static GrFragmentProcessor* Create(GrTexture* texture, | 67 static GrFragmentProcessor* Create(GrTexture* texture, |
67 GrTexture* maskTexture, | 68 GrTexture* maskTexture, |
68 float innerThreshold, | 69 float innerThreshold, |
69 float outerThreshold) { | 70 float outerThreshold) { |
70 return new AlphaThresholdEffect(texture, maskTexture, innerThreshold, ou
terThreshold); | 71 return new AlphaThresholdEffect(texture, maskTexture, innerThreshold, ou
terThreshold); |
71 } | 72 } |
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119 typedef GrFragmentProcessor INHERITED; | 120 typedef GrFragmentProcessor INHERITED; |
120 }; | 121 }; |
121 | 122 |
122 class GrGLAlphaThresholdEffect : public GrGLFragmentProcessor { | 123 class GrGLAlphaThresholdEffect : public GrGLFragmentProcessor { |
123 public: | 124 public: |
124 GrGLAlphaThresholdEffect(const GrFragmentProcessor&) {} | 125 GrGLAlphaThresholdEffect(const GrFragmentProcessor&) {} |
125 | 126 |
126 virtual void emitCode(EmitArgs&) override; | 127 virtual void emitCode(EmitArgs&) override; |
127 | 128 |
128 protected: | 129 protected: |
129 void onSetData(const GrGLProgramDataManager&, const GrProcessor&) override; | 130 void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override
; |
130 | 131 |
131 private: | 132 private: |
132 | 133 |
133 GrGLProgramDataManager::UniformHandle fInnerThresholdVar; | 134 GrGLSLProgramDataManager::UniformHandle fInnerThresholdVar; |
134 GrGLProgramDataManager::UniformHandle fOuterThresholdVar; | 135 GrGLSLProgramDataManager::UniformHandle fOuterThresholdVar; |
135 | 136 |
136 typedef GrGLFragmentProcessor INHERITED; | 137 typedef GrGLFragmentProcessor INHERITED; |
137 }; | 138 }; |
138 | 139 |
139 void GrGLAlphaThresholdEffect::emitCode(EmitArgs& args) { | 140 void GrGLAlphaThresholdEffect::emitCode(EmitArgs& args) { |
140 fInnerThresholdVar = args.fBuilder->addUniform( | 141 fInnerThresholdVar = args.fBuilder->addUniform( |
141 GrGLProgramBuilder::kFragment_Visibility, | 142 GrGLProgramBuilder::kFragment_Visibility, |
142 kFloat_GrSLType, kDefault_GrSLPrecision, | 143 kFloat_GrSLType, kDefault_GrSLPrecision, |
143 "inner_threshold"); | 144 "inner_threshold"); |
144 fOuterThresholdVar = args.fBuilder->addUniform( | 145 fOuterThresholdVar = args.fBuilder->addUniform( |
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175 "\t\t} else if (color.a < inner_thresh) {\n" | 176 "\t\t} else if (color.a < inner_thresh) {\n" |
176 "\t\t\tfloat scale = inner_thresh / max(0.001, color.a
);\n" | 177 "\t\t\tfloat scale = inner_thresh / max(0.001, color.a
);\n" |
177 "\t\t\tcolor.rgb *= scale;\n" | 178 "\t\t\tcolor.rgb *= scale;\n" |
178 "\t\t\tcolor.a = inner_thresh;\n" | 179 "\t\t\tcolor.a = inner_thresh;\n" |
179 "\t\t}\n"); | 180 "\t\t}\n"); |
180 | 181 |
181 fsBuilder->codeAppendf("%s = %s;\n", args.fOutputColor, | 182 fsBuilder->codeAppendf("%s = %s;\n", args.fOutputColor, |
182 (GrGLSLExpr4(args.fInputColor) * GrGLSLExpr4("color")
).c_str()); | 183 (GrGLSLExpr4(args.fInputColor) * GrGLSLExpr4("color")
).c_str()); |
183 } | 184 } |
184 | 185 |
185 void GrGLAlphaThresholdEffect::onSetData(const GrGLProgramDataManager& pdman, | 186 void GrGLAlphaThresholdEffect::onSetData(const GrGLSLProgramDataManager& pdman, |
186 const GrProcessor& proc) { | 187 const GrProcessor& proc) { |
187 const AlphaThresholdEffect& alpha_threshold = proc.cast<AlphaThresholdEffect
>(); | 188 const AlphaThresholdEffect& alpha_threshold = proc.cast<AlphaThresholdEffect
>(); |
188 pdman.set1f(fInnerThresholdVar, alpha_threshold.innerThreshold()); | 189 pdman.set1f(fInnerThresholdVar, alpha_threshold.innerThreshold()); |
189 pdman.set1f(fOuterThresholdVar, alpha_threshold.outerThreshold()); | 190 pdman.set1f(fOuterThresholdVar, alpha_threshold.outerThreshold()); |
190 } | 191 } |
191 | 192 |
192 ///////////////////////////////////////////////////////////////////// | 193 ///////////////////////////////////////////////////////////////////// |
193 | 194 |
194 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(AlphaThresholdEffect); | 195 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(AlphaThresholdEffect); |
195 | 196 |
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370 } | 371 } |
371 | 372 |
372 #ifndef SK_IGNORE_TO_STRING | 373 #ifndef SK_IGNORE_TO_STRING |
373 void SkAlphaThresholdFilterImpl::toString(SkString* str) const { | 374 void SkAlphaThresholdFilterImpl::toString(SkString* str) const { |
374 str->appendf("SkAlphaThresholdImageFilter: ("); | 375 str->appendf("SkAlphaThresholdImageFilter: ("); |
375 str->appendf("inner: %f outer: %f", fInnerThreshold, fOuterThreshold); | 376 str->appendf("inner: %f outer: %f", fInnerThreshold, fOuterThreshold); |
376 str->append(")"); | 377 str->append(")"); |
377 } | 378 } |
378 #endif | 379 #endif |
379 | 380 |
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