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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 "GrDitherEffect.h" | 8 #include "GrDitherEffect.h" |
9 #include "GrFragmentProcessor.h" | 9 #include "GrFragmentProcessor.h" |
10 #include "GrInvariantOutput.h" | 10 #include "GrInvariantOutput.h" |
11 #include "SkRect.h" | 11 #include "SkRect.h" |
12 #include "gl/GrGLProcessor.h" | 12 #include "gl/GrGLProcessor.h" |
13 #include "gl/GrGLSL.h" | 13 #include "gl/GrGLSL.h" |
14 #include "gl/builders/GrGLProgramBuilder.h" | 14 #include "gl/builders/GrGLProgramBuilder.h" |
15 | 15 |
16 ////////////////////////////////////////////////////////////////////////////// | 16 ////////////////////////////////////////////////////////////////////////////// |
17 | 17 |
18 class DitherEffect : public GrFragmentProcessor { | 18 class DitherEffect : public GrFragmentProcessor { |
19 public: | 19 public: |
20 static GrFragmentProcessor* Create() { | 20 static GrFragmentProcessor* Create() { |
21 GR_CREATE_STATIC_PROCESSOR(gDitherEffect, DitherEffect, ()) | 21 GR_CREATE_STATIC_PROCESSOR(gDitherEffect, DitherEffect, ()) |
22 return SkRef(gDitherEffect); | 22 return SkRef(gDitherEffect); |
23 } | 23 } |
24 | 24 |
25 virtual ~DitherEffect() {}; | 25 virtual ~DitherEffect() {}; |
26 | 26 |
27 const char* name() const override { return "Dither"; } | 27 const char* name() const override { return "Dither"; } |
28 | 28 |
29 void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const overri
de; | 29 void getGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const over
ride; |
30 | 30 |
31 GrGLFragmentProcessor* createGLInstance() const override; | 31 GrGLFragmentProcessor* createGLInstance() const override; |
32 | 32 |
33 private: | 33 private: |
34 DitherEffect() { | 34 DitherEffect() { |
35 this->initClassID<DitherEffect>(); | 35 this->initClassID<DitherEffect>(); |
36 this->setWillReadFragmentPosition(); | 36 this->setWillReadFragmentPosition(); |
37 } | 37 } |
38 | 38 |
39 // All dither effects are equal | 39 // All dither effects are equal |
(...skipping 59 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
99 // it up or let it remain constant during quantization. | 99 // it up or let it remain constant during quantization. |
100 fsBuilder->codeAppendf("\t\tfloat r = " | 100 fsBuilder->codeAppendf("\t\tfloat r = " |
101 "fract(sin(dot(%s.xy ,vec2(12.9898,78.233))) * 43758.
5453);\n", | 101 "fract(sin(dot(%s.xy ,vec2(12.9898,78.233))) * 43758.
5453);\n", |
102 fsBuilder->fragmentPosition()); | 102 fsBuilder->fragmentPosition()); |
103 fsBuilder->codeAppendf("\t\t%s = (1.0/255.0) * vec4(r, r, r, r) + %s;\n", | 103 fsBuilder->codeAppendf("\t\t%s = (1.0/255.0) * vec4(r, r, r, r) + %s;\n", |
104 outputColor, GrGLSLExpr4(inputColor).c_str()); | 104 outputColor, GrGLSLExpr4(inputColor).c_str()); |
105 } | 105 } |
106 | 106 |
107 ////////////////////////////////////////////////////////////////////////////// | 107 ////////////////////////////////////////////////////////////////////////////// |
108 | 108 |
109 void DitherEffect::getGLProcessorKey(const GrGLCaps& caps, | 109 void DitherEffect::getGLProcessorKey(const GrGLSLCaps& caps, |
110 GrProcessorKeyBuilder* b) const { | 110 GrProcessorKeyBuilder* b) const { |
111 GLDitherEffect::GenKey(*this, caps, b); | 111 GLDitherEffect::GenKey(*this, caps, b); |
112 } | 112 } |
113 | 113 |
114 GrGLFragmentProcessor* DitherEffect::createGLInstance() const { | 114 GrGLFragmentProcessor* DitherEffect::createGLInstance() const { |
115 return SkNEW_ARGS(GLDitherEffect, (*this)); | 115 return SkNEW_ARGS(GLDitherEffect, (*this)); |
116 } | 116 } |
117 | 117 |
118 GrFragmentProcessor* GrDitherEffect::Create() { return DitherEffect::Create(); } | 118 GrFragmentProcessor* GrDitherEffect::Create() { return DitherEffect::Create(); } |
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