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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 GrGLSLShaderBuilder_DEFINED | 8 #ifndef GrGLSLShaderBuilder_DEFINED |
9 #define GrGLSLShaderBuilder_DEFINED | 9 #define GrGLSLShaderBuilder_DEFINED |
10 | 10 |
11 #include "GrAllocator.h" | 11 #include "GrAllocator.h" |
12 #include "glsl/GrGLSLShaderVar.h" | 12 #include "glsl/GrGLSLShaderVar.h" |
13 #include "SkTDArray.h" | 13 #include "SkTDArray.h" |
14 | 14 |
15 #include <stdarg.h> | 15 #include <stdarg.h> |
16 | 16 |
17 class GrGLSLProgramBuilder; | 17 class GrGLSLProgramBuilder; |
18 class GrGLSLTextureSampler; | 18 class GrGLSLTextureSampler; |
19 | 19 |
20 /** | 20 /** |
21 base class for all shaders builders | 21 base class for all shaders builders |
22 */ | 22 */ |
23 class GrGLSLShaderBuilder { | 23 class GrGLSLShaderBuilder { |
24 public: | 24 public: |
25 GrGLSLShaderBuilder(GrGLSLProgramBuilder* program); | 25 GrGLSLShaderBuilder(GrGLSLProgramBuilder* program); |
26 virtual ~GrGLSLShaderBuilder() {} | 26 virtual ~GrGLSLShaderBuilder() {} |
27 | 27 |
28 void addInput(const GrGLSLShaderVar& input) { fInputs.push_back(input); } | |
29 void addOutput(const GrGLSLShaderVar& output) { fOutputs.push_back(output);
} | |
30 | |
31 /* | 28 /* |
32 * We put texture lookups in the base class because it is TECHNICALLY possib
le to do texture | 29 * We put texture lookups in the base class because it is TECHNICALLY possib
le to do texture |
33 * lookups in any kind of shader. However, for the time being using these c
alls on non-fragment | 30 * lookups in any kind of shader. However, for the time being using these c
alls on non-fragment |
34 * shaders will result in a shader compilation error as texture sampler unif
orms are only | 31 * shaders will result in a shader compilation error as texture sampler unif
orms are only |
35 * visible to the fragment shader. It would not be hard to change this beha
vior, if someone | 32 * visible to the fragment shader. It would not be hard to change this beha
vior, if someone |
36 * actually wants to do texture lookups in a non-fragment shader | 33 * actually wants to do texture lookups in a non-fragment shader |
37 * | 34 * |
38 * TODO if append texture lookup is used on a non-fragment shader, sampler u
niforms should be | 35 * TODO if append texture lookup is used on a non-fragment shader, sampler u
niforms should be |
39 * made visible to that shaders | 36 * made visible to that shaders |
40 */ | 37 */ |
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191 VarArray fOutputs; | 188 VarArray fOutputs; |
192 uint32_t fFeaturesAddedMask; | 189 uint32_t fFeaturesAddedMask; |
193 SkSTArray<1, SkString> fLayoutParams[kLastInterfaceQualifier + 1]; | 190 SkSTArray<1, SkString> fLayoutParams[kLastInterfaceQualifier + 1]; |
194 int fCodeIndex; | 191 int fCodeIndex; |
195 bool fFinalized; | 192 bool fFinalized; |
196 | 193 |
197 friend class GrGLProgramBuilder; | 194 friend class GrGLProgramBuilder; |
198 friend class GrGLPathProgramBuilder; // to access fInputs. | 195 friend class GrGLPathProgramBuilder; // to access fInputs. |
199 }; | 196 }; |
200 #endif | 197 #endif |
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