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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 #ifndef GrGLShaderBuilder_DEFINED | 8 #ifndef GrGLShaderBuilder_DEFINED |
9 #define GrGLShaderBuilder_DEFINED | 9 #define GrGLShaderBuilder_DEFINED |
10 | 10 |
11 #include "gl/GrGLProgramDesc.h" | 11 #include "gl/GrGLProgramDesc.h" |
| 12 #include "gl/GrGLProgramEffects.h" |
| 13 #include "gl/GrGLSL.h" |
12 #include "gl/GrGLProgramDataManager.h" | 14 #include "gl/GrGLProgramDataManager.h" |
| 15 #include "GrBackendProcessorFactory.h" |
| 16 #include "GrColor.h" |
| 17 #include "GrProcessor.h" |
| 18 #include "SkTypes.h" |
13 | 19 |
14 #include <stdarg.h> | 20 #include <stdarg.h> |
15 | 21 |
16 class GrGLContextInfo; | 22 class GrGLContextInfo; |
| 23 class GrProcessorStage; |
| 24 class GrGLProgramDesc; |
17 class GrGLProgramBuilder; | 25 class GrGLProgramBuilder; |
| 26 class GrGLFullProgramBuilder; |
18 | 27 |
19 /** | 28 /** |
20 base class for all shaders builders | 29 base class for all shaders builders |
21 */ | 30 */ |
22 class GrGLShaderBuilder { | 31 class GrGLShaderBuilder { |
23 public: | 32 public: |
24 typedef GrGLProcessor::TransformedCoordsArray TransformedCoordsArray; | 33 typedef GrGLProcessor::TransformedCoordsArray TransformedCoordsArray; |
25 typedef GrGLProcessor::TextureSampler TextureSampler; | 34 typedef GrGLProcessor::TextureSampler TextureSampler; |
26 | |
27 GrGLShaderBuilder(GrGLProgramBuilder* program); | 35 GrGLShaderBuilder(GrGLProgramBuilder* program); |
28 | 36 |
29 void addInput(GrGLShaderVar i) { fInputs.push_back(i); } | 37 void addInput(GrGLShaderVar i) { fInputs.push_back(i); } |
30 void addOutput(GrGLShaderVar i) { fOutputs.push_back(i); } | 38 void addOutput(GrGLShaderVar i) { fOutputs.push_back(i); } |
31 | 39 |
32 /* | 40 /* |
33 * We put texture lookups in the base class because it is TECHNICALLY possib
le to do texture | 41 * We put texture lookups in the base class because it is TECHNICALLY possib
le to do texture |
34 * lookups in any kind of shader. However, for the time being using these c
alls on non-fragment | 42 * lookups in any kind of shader. However, for the time being using these c
alls on non-fragment |
35 * shaders will result in a shader compilation error as texture sampler unif
orms are only | 43 * shaders will result in a shader compilation error as texture sampler unif
orms are only |
36 * visible to the fragment shader. It would not be hard to change this beha
vior, if someone | 44 * visible to the fragment shader. It would not be hard to change this beha
vior, if someone |
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97 const GrGLShaderVar* args, | 105 const GrGLShaderVar* args, |
98 const char* body, | 106 const char* body, |
99 SkString* outName); | 107 SkString* outName); |
100 | 108 |
101 /* | 109 /* |
102 * Get parent builder for adding uniforms | 110 * Get parent builder for adding uniforms |
103 */ | 111 */ |
104 GrGLProgramBuilder* getProgramBuilder() { return fProgramBuilder; } | 112 GrGLProgramBuilder* getProgramBuilder() { return fProgramBuilder; } |
105 | 113 |
106 /** | 114 /** |
107 * Helper for begining and ending a block in the shader code. | 115 * Helper for begining and ending a block in the fragment code. |
108 */ | 116 */ |
109 class ShaderBlock { | 117 class ShaderBlock { |
110 public: | 118 public: |
111 ShaderBlock(GrGLShaderBuilder* builder) : fBuilder(builder) { | 119 ShaderBlock(GrGLShaderBuilder* builder) : fBuilder(builder) { |
112 SkASSERT(builder); | 120 SkASSERT(builder); |
113 fBuilder->codeAppend("{"); | 121 fBuilder->codeAppend("{"); |
114 } | 122 } |
115 | 123 |
116 ~ShaderBlock() { | 124 ~ShaderBlock() { |
117 fBuilder->codeAppend("}"); | 125 fBuilder->codeAppend("}"); |
118 } | 126 } |
119 private: | 127 private: |
120 GrGLShaderBuilder* fBuilder; | 128 GrGLShaderBuilder* fBuilder; |
121 }; | 129 }; |
122 | |
123 protected: | 130 protected: |
124 typedef GrTAllocator<GrGLShaderVar> VarArray; | |
125 void appendDecls(const VarArray& vars, SkString* out) const; | |
126 | 131 |
127 /* | 132 /* |
128 * this super low level function is just for use internally to builders | 133 * this super low level function is just for use internally to builders |
129 */ | 134 */ |
130 void appendTextureLookup(const char* samplerName, | 135 void appendTextureLookup(const char* samplerName, |
131 const char* coordName, | 136 const char* coordName, |
132 uint32_t configComponentMask, | 137 uint32_t configComponentMask, |
133 const char* swizzle); | 138 const char* swizzle); |
134 | 139 |
135 /* | 140 /* |
136 * A general function which enables an extension in a shader if the feature
bit is not present | 141 * A general function which enables an extension in a shader if the feature
bit is not present |
137 */ | 142 */ |
138 void addFeature(uint32_t featureBit, const char* extensionName); | 143 void addFeature(uint32_t featureBit, const char* extensionName); |
139 | 144 |
| 145 typedef GrTAllocator<GrGLShaderVar> VarArray; |
| 146 |
140 GrGLProgramBuilder* fProgramBuilder; | 147 GrGLProgramBuilder* fProgramBuilder; |
141 | 148 |
142 SkString fCode; | 149 SkString fCode; |
143 SkString fFunctions; | 150 SkString fFunctions; |
144 SkString fExtensions; | 151 SkString fExtensions; |
145 | 152 |
146 VarArray fInputs; | 153 VarArray fInputs; |
147 VarArray fOutputs; | 154 VarArray fOutputs; |
148 uint32_t fFeaturesAddedMask; | 155 uint32_t fFeaturesAddedMask; |
149 }; | 156 }; |
| 157 |
| 158 |
| 159 /* |
| 160 * Full Shader builder is the base class for shaders which are only accessible t
hrough full program |
| 161 * builder, ie vertex, geometry, and later TCU / TES. Using this base class, th
ey can access the |
| 162 * full program builder functionality through the full program pointer |
| 163 */ |
| 164 class GrGLFullShaderBuilder : public GrGLShaderBuilder { |
| 165 public: |
| 166 GrGLFullShaderBuilder(GrGLFullProgramBuilder* program); |
| 167 |
| 168 GrGLFullProgramBuilder* fullProgramBuilder() { return fFullProgramBuilder; } |
| 169 protected: |
| 170 GrGLFullProgramBuilder* fFullProgramBuilder; |
| 171 private: |
| 172 typedef GrGLShaderBuilder INHERITED; |
| 173 }; |
150 #endif | 174 #endif |
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