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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 #ifndef GrGLSLFragmentProcessor_DEFINED | 8 #ifndef GrGLSLFragmentProcessor_DEFINED |
9 #define GrGLSLFragmentProcessor_DEFINED | 9 #define GrGLSLFragmentProcessor_DEFINED |
10 | 10 |
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24 public: | 24 public: |
25 GrGLSLFragmentProcessor() {} | 25 GrGLSLFragmentProcessor() {} |
26 | 26 |
27 virtual ~GrGLSLFragmentProcessor() { | 27 virtual ~GrGLSLFragmentProcessor() { |
28 for (int i = 0; i < fChildProcessors.count(); ++i) { | 28 for (int i = 0; i < fChildProcessors.count(); ++i) { |
29 delete fChildProcessors[i]; | 29 delete fChildProcessors[i]; |
30 } | 30 } |
31 } | 31 } |
32 | 32 |
33 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; | 33 typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
34 typedef GrGLSLSampler::SamplerArray SamplerArray; | 34 typedef GrGLSLProgramDataManager::UniformHandle SamplerHandle; |
35 | 35 |
36 /** Called when the program stage should insert its code into the shaders. T
he code in each | 36 /** Called when the program stage should insert its code into the shaders. T
he code in each |
37 shader will be in its own block ({}) and so locally scoped names will no
t collide across | 37 shader will be in its own block ({}) and so locally scoped names will no
t collide across |
38 stages. | 38 stages. |
39 | 39 |
40 @param builder Interface used to emit code in the shaders. | 40 @param builder Interface used to emit code in the shaders. |
41 @param processor The processor that generated this program stage. | 41 @param processor The processor that generated this program stage. |
42 @param key The key that was computed by GenKey() from the gener
ating GrProcessor. | 42 @param key The key that was computed by GenKey() from the gener
ating GrProcessor. |
43 @param outputColor A predefined vec4 in the FS in which the stage shoul
d place its output | 43 @param outputColor A predefined vec4 in the FS in which the stage shoul
d place its output |
44 color (or coverage). | 44 color (or coverage). |
45 @param inputColor A vec4 that holds the input color to the stage in th
e FS. This may be | 45 @param inputColor A vec4 that holds the input color to the stage in th
e FS. This may be |
46 nullptr in which case the implied input is solid whi
te (all ones). | 46 nullptr in which case the implied input is solid whi
te (all ones). |
47 TODO: Better system for communicating optimization i
nfo (e.g. input | 47 TODO: Better system for communicating optimization i
nfo (e.g. input |
48 color is solid white, trans black, known to be opaqu
e, etc.) that allows | 48 color is solid white, trans black, known to be opaqu
e, etc.) that allows |
49 the processor to communicate back similar known info
about its output. | 49 the processor to communicate back similar known info
about its output. |
50 @param samplers Contains one entry for each GrTextureAccess of the G
rProcessor. These | 50 @param samplers Contains one entry for each GrTextureAccess of the G
rProcessor. These |
51 can be passed to the builder to emit texture reads i
n the generated | 51 can be passed to the builder to emit texture reads i
n the generated |
52 code. | 52 code. |
53 */ | 53 */ |
54 | 54 |
55 struct EmitArgs { | 55 struct EmitArgs { |
56 EmitArgs(GrGLSLFPFragmentBuilder* fragBuilder, | 56 EmitArgs(GrGLSLFPFragmentBuilder* fragBuilder, |
57 GrGLSLUniformHandler* uniformHandler, | 57 GrGLSLUniformHandler* uniformHandler, |
58 const GrGLSLCaps* caps, | 58 const GrGLSLCaps* caps, |
59 const GrFragmentProcessor& fp, | 59 const GrFragmentProcessor& fp, |
60 const char* outputColor, | 60 const char* outputColor, |
61 const char* inputColor, | 61 const char* inputColor, |
62 const GrGLSLTransformedCoordsArray& coords, | 62 const GrGLSLTransformedCoordsArray& coords, |
63 const SamplerArray& texSamplers, | 63 const SamplerHandle* texSamplers, |
64 const SamplerArray& bufferSamplers) | 64 const SamplerHandle* bufferSamplers) |
65 : fFragBuilder(fragBuilder) | 65 : fFragBuilder(fragBuilder) |
66 , fUniformHandler(uniformHandler) | 66 , fUniformHandler(uniformHandler) |
67 , fGLSLCaps(caps) | 67 , fGLSLCaps(caps) |
68 , fFp(fp) | 68 , fFp(fp) |
69 , fOutputColor(outputColor) | 69 , fOutputColor(outputColor) |
70 , fInputColor(inputColor) | 70 , fInputColor(inputColor) |
71 , fCoords(coords) | 71 , fCoords(coords) |
72 , fTexSamplers(texSamplers) | 72 , fTexSamplers(texSamplers) |
73 , fBufferSamplers(bufferSamplers) {} | 73 , fBufferSamplers(bufferSamplers) {} |
74 GrGLSLFPFragmentBuilder* fFragBuilder; | 74 GrGLSLFPFragmentBuilder* fFragBuilder; |
75 GrGLSLUniformHandler* fUniformHandler; | 75 GrGLSLUniformHandler* fUniformHandler; |
76 const GrGLSLCaps* fGLSLCaps; | 76 const GrGLSLCaps* fGLSLCaps; |
77 const GrFragmentProcessor& fFp; | 77 const GrFragmentProcessor& fFp; |
78 const char* fOutputColor; | 78 const char* fOutputColor; |
79 const char* fInputColor; | 79 const char* fInputColor; |
80 const GrGLSLTransformedCoordsArray& fCoords; | 80 const GrGLSLTransformedCoordsArray& fCoords; |
81 const SamplerArray& fTexSamplers; | 81 const SamplerHandle* fTexSamplers; |
82 const SamplerArray& fBufferSamplers; | 82 const SamplerHandle* fBufferSamplers; |
83 }; | 83 }; |
84 | 84 |
85 virtual void emitCode(EmitArgs&) = 0; | 85 virtual void emitCode(EmitArgs&) = 0; |
86 | 86 |
87 void setData(const GrGLSLProgramDataManager& pdman, const GrFragmentProcesso
r& processor); | 87 void setData(const GrGLSLProgramDataManager& pdman, const GrFragmentProcesso
r& processor); |
88 | 88 |
89 static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuil
der*) {} | 89 static void GenKey(const GrProcessor&, const GrGLSLCaps&, GrProcessorKeyBuil
der*) {} |
90 | 90 |
91 int numChildProcessors() const { return fChildProcessors.count(); } | 91 int numChildProcessors() const { return fChildProcessors.count(); } |
92 | 92 |
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119 | 119 |
120 private: | 120 private: |
121 void internalEmitChild(int, const char*, const char*, EmitArgs&); | 121 void internalEmitChild(int, const char*, const char*, EmitArgs&); |
122 | 122 |
123 SkTArray<GrGLSLFragmentProcessor*, true> fChildProcessors; | 123 SkTArray<GrGLSLFragmentProcessor*, true> fChildProcessors; |
124 | 124 |
125 friend class GrFragmentProcessor; | 125 friend class GrFragmentProcessor; |
126 }; | 126 }; |
127 | 127 |
128 #endif | 128 #endif |
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