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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 "GrYUVtoRGBEffect.h" | 9 #include "GrYUVtoRGBEffect.h" |
9 | 10 |
10 #include "GrCoordTransform.h" | 11 #include "GrCoordTransform.h" |
11 #include "GrEffect.h" | 12 #include "GrEffect.h" |
12 #include "gl/GrGLEffect.h" | 13 #include "gl/GrGLEffect.h" |
13 #include "gl/GrGLShaderBuilder.h" | |
14 #include "GrTBackendEffectFactory.h" | 14 #include "GrTBackendEffectFactory.h" |
15 | 15 |
16 namespace { | 16 namespace { |
17 | 17 |
18 class YUVtoRGBEffect : public GrEffect { | 18 class YUVtoRGBEffect : public GrEffect { |
19 public: | 19 public: |
20 static GrEffect* Create(GrTexture* yTexture, GrTexture* uTexture, GrTexture*
vTexture) { | 20 static GrEffect* Create(GrTexture* yTexture, GrTexture* uTexture, GrTexture*
vTexture) { |
21 return SkNEW_ARGS(YUVtoRGBEffect, (yTexture, uTexture, vTexture)); | 21 return SkNEW_ARGS(YUVtoRGBEffect, (yTexture, uTexture, vTexture)); |
22 } | 22 } |
23 | 23 |
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37 class GLEffect : public GrGLEffect { | 37 class GLEffect : public GrGLEffect { |
38 public: | 38 public: |
39 // this class always generates the same code. | 39 // this class always generates the same code. |
40 static void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuil
der*) {} | 40 static void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyBuil
der*) {} |
41 | 41 |
42 GLEffect(const GrBackendEffectFactory& factory, | 42 GLEffect(const GrBackendEffectFactory& factory, |
43 const GrDrawEffect&) | 43 const GrDrawEffect&) |
44 : INHERITED(factory) { | 44 : INHERITED(factory) { |
45 } | 45 } |
46 | 46 |
47 virtual void emitCode(GrGLShaderBuilder* builder, | 47 virtual void emitCode(GrGLProgramBuilder* builder, |
48 const GrDrawEffect&, | 48 const GrDrawEffect&, |
49 const GrEffectKey&, | 49 const GrEffectKey&, |
50 const char* outputColor, | 50 const char* outputColor, |
51 const char* inputColor, | 51 const char* inputColor, |
52 const TransformedCoordsArray& coords, | 52 const TransformedCoordsArray& coords, |
53 const TextureSamplerArray& samplers) SK_OVERRIDE { | 53 const TextureSamplerArray& samplers) SK_OVERRIDE { |
| 54 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBui
lder(); |
54 const char* yuvMatrix = "yuvMatrix"; | 55 const char* yuvMatrix = "yuvMatrix"; |
55 builder->fsCodeAppendf("\tconst mat4 %s = mat4(1.0, 0.0, 1.402,
-0.701,\n\t\t\t" | 56 fsBuilder->codeAppendf("\tconst mat4 %s = mat4(1.0, 0.0, 1.402,
-0.701,\n\t\t\t" |
56 "1.0, -0.344, -0.714,
0.529,\n\t\t\t" | 57 "1.0, -0.344, -0.714,
0.529,\n\t\t\t" |
57 "1.0, 1.772, 0.0,
-0.886,\n\t\t\t" | 58 "1.0, 1.772, 0.0,
-0.886,\n\t\t\t" |
58 "0.0, 0.0, 0.0,
1.0);\n", | 59 "0.0, 0.0, 0.0,
1.0);\n", |
59 yuvMatrix); | 60 yuvMatrix); |
60 builder->fsCodeAppendf("\t%s = vec4(\n\t\t", outputColor); | 61 fsBuilder->codeAppendf("\t%s = vec4(\n\t\t", outputColor); |
61 builder->fsAppendTextureLookup(samplers[0], coords[0].c_str(), coord
s[0].type()); | 62 fsBuilder->appendTextureLookup(samplers[0], coords[0].c_str(), coord
s[0].type()); |
62 builder->fsCodeAppend(".r,\n\t\t"); | 63 fsBuilder->codeAppend(".r,\n\t\t"); |
63 builder->fsAppendTextureLookup(samplers[1], coords[0].c_str(), coord
s[0].type()); | 64 fsBuilder->appendTextureLookup(samplers[1], coords[0].c_str(), coord
s[0].type()); |
64 builder->fsCodeAppend(".r,\n\t\t"); | 65 fsBuilder->codeAppend(".r,\n\t\t"); |
65 builder->fsAppendTextureLookup(samplers[2], coords[0].c_str(), coord
s[0].type()); | 66 fsBuilder->appendTextureLookup(samplers[2], coords[0].c_str(), coord
s[0].type()); |
66 builder->fsCodeAppendf(".r,\n\t\t1.0) * %s;\n", yuvMatrix); | 67 fsBuilder->codeAppendf(".r,\n\t\t1.0) * %s;\n", yuvMatrix); |
67 } | 68 } |
68 | 69 |
69 typedef GrGLEffect INHERITED; | 70 typedef GrGLEffect INHERITED; |
70 }; | 71 }; |
71 | 72 |
72 private: | 73 private: |
73 YUVtoRGBEffect(GrTexture* yTexture, GrTexture* uTexture, GrTexture* vTexture
) | 74 YUVtoRGBEffect(GrTexture* yTexture, GrTexture* uTexture, GrTexture* vTexture
) |
74 : fCoordTransform(kLocal_GrCoordSet, MakeDivByTextureWHMatrix(yTexture), yTe
xture) | 75 : fCoordTransform(kLocal_GrCoordSet, MakeDivByTextureWHMatrix(yTexture), yTe
xture) |
75 , fYAccess(yTexture) | 76 , fYAccess(yTexture) |
76 , fUAccess(uTexture) | 77 , fUAccess(uTexture) |
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97 typedef GrEffect INHERITED; | 98 typedef GrEffect INHERITED; |
98 }; | 99 }; |
99 | 100 |
100 } | 101 } |
101 | 102 |
102 ////////////////////////////////////////////////////////////////////////////// | 103 ////////////////////////////////////////////////////////////////////////////// |
103 | 104 |
104 GrEffect* GrYUVtoRGBEffect::Create(GrTexture* yTexture, GrTexture* uTexture, GrT
exture* vTexture) { | 105 GrEffect* GrYUVtoRGBEffect::Create(GrTexture* yTexture, GrTexture* uTexture, GrT
exture* vTexture) { |
105 return YUVtoRGBEffect::Create(yTexture, uTexture, vTexture); | 106 return YUVtoRGBEffect::Create(yTexture, uTexture, vTexture); |
106 } | 107 } |
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