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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 "gl/builders/GrGLProgramBuilder.h" | 8 #include "gl/builders/GrGLProgramBuilder.h" |
9 #include "GrDitherEffect.h" | 9 #include "GrDitherEffect.h" |
10 | 10 |
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23 static GrFragmentProcessor* Create() { | 23 static GrFragmentProcessor* Create() { |
24 GR_CREATE_STATIC_FRAGMENT_PROCESSOR(gDitherEffect, DitherEffect, ()) | 24 GR_CREATE_STATIC_FRAGMENT_PROCESSOR(gDitherEffect, DitherEffect, ()) |
25 return SkRef(gDitherEffect); | 25 return SkRef(gDitherEffect); |
26 } | 26 } |
27 | 27 |
28 virtual ~DitherEffect() {}; | 28 virtual ~DitherEffect() {}; |
29 static const char* Name() { return "Dither"; } | 29 static const char* Name() { return "Dither"; } |
30 | 30 |
31 typedef GLDitherEffect GLProcessor; | 31 typedef GLDitherEffect GLProcessor; |
32 | 32 |
33 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | |
34 | |
35 virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERR
IDE { | 33 virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERR
IDE { |
36 return GrTBackendFragmentProcessorFactory<DitherEffect>::getInstance(); | 34 return GrTBackendFragmentProcessorFactory<DitherEffect>::getInstance(); |
37 } | 35 } |
38 | 36 |
39 private: | 37 private: |
40 DitherEffect() { | 38 DitherEffect() { |
41 this->setWillReadFragmentPosition(); | 39 this->setWillReadFragmentPosition(); |
42 } | 40 } |
43 | 41 |
44 // All dither effects are equal | 42 // All dither effects are equal |
45 virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE { return true;
} | 43 virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE { return true;
} |
46 | 44 |
| 45 virtual void onComputeInvariantOutput(InvariantOutput* inout) const SK_OVERR
IDE; |
| 46 |
47 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 47 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
48 | 48 |
49 typedef GrFragmentProcessor INHERITED; | 49 typedef GrFragmentProcessor INHERITED; |
50 }; | 50 }; |
51 | 51 |
52 void DitherEffect::getConstantColorComponents(GrColor* color, uint32_t* validFla
gs) const { | 52 void DitherEffect::onComputeInvariantOutput(InvariantOutput* inout) const { |
53 *validFlags = 0; | 53 inout->fValidFlags = 0; |
| 54 inout->fIsSingleComponent = false; |
54 } | 55 } |
55 | 56 |
56 ////////////////////////////////////////////////////////////////////////////// | 57 ////////////////////////////////////////////////////////////////////////////// |
57 | 58 |
58 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(DitherEffect); | 59 GR_DEFINE_FRAGMENT_PROCESSOR_TEST(DitherEffect); |
59 | 60 |
60 GrFragmentProcessor* DitherEffect::TestCreate(SkRandom*, | 61 GrFragmentProcessor* DitherEffect::TestCreate(SkRandom*, |
61 GrContext*, | 62 GrContext*, |
62 const GrDrawTargetCaps&, | 63 const GrDrawTargetCaps&, |
63 GrTexture*[]) { | 64 GrTexture*[]) { |
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107 fsBuilder->codeAppendf("\t\tfloat r = " | 108 fsBuilder->codeAppendf("\t\tfloat r = " |
108 "fract(sin(dot(%s.xy ,vec2(12.9898,78.233))) * 43758.
5453);\n", | 109 "fract(sin(dot(%s.xy ,vec2(12.9898,78.233))) * 43758.
5453);\n", |
109 fsBuilder->fragmentPosition()); | 110 fsBuilder->fragmentPosition()); |
110 fsBuilder->codeAppendf("\t\t%s = (1.0/255.0) * vec4(r, r, r, r) + %s;\n", | 111 fsBuilder->codeAppendf("\t\t%s = (1.0/255.0) * vec4(r, r, r, r) + %s;\n", |
111 outputColor, GrGLSLExpr4(inputColor).c_str()); | 112 outputColor, GrGLSLExpr4(inputColor).c_str()); |
112 } | 113 } |
113 | 114 |
114 ////////////////////////////////////////////////////////////////////////////// | 115 ////////////////////////////////////////////////////////////////////////////// |
115 | 116 |
116 GrFragmentProcessor* GrDitherEffect::Create() { return DitherEffect::Create(); } | 117 GrFragmentProcessor* GrDitherEffect::Create() { return DitherEffect::Create(); } |
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