1 /*
2  * Copyright 2015 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef GrGLUniformHandler_DEFINED
9 #define GrGLUniformHandler_DEFINED
10 
11 #include "glsl/GrGLSLUniformHandler.h"
12 
13 #include "gl/GrGLProgramDataManager.h"
14 
15 class GrGLCaps;
16 
17 static const int kUniformsPerBlock = 8;
18 
19 class GrGLUniformHandler : public GrGLSLUniformHandler {
20 public:
getUniformVariable(UniformHandle u)21     const GrGLSLShaderVar& getUniformVariable(UniformHandle u) const override {
22         return fUniforms[u.toIndex()].fVariable;
23     }
24 
getUniformCStr(UniformHandle u)25     const char* getUniformCStr(UniformHandle u) const override {
26         return this->getUniformVariable(u).c_str();
27     }
28 private:
GrGLUniformHandler(GrGLSLProgramBuilder * program)29     explicit GrGLUniformHandler(GrGLSLProgramBuilder* program)
30         : INHERITED(program)
31         , fUniforms(kUniformsPerBlock) {}
32 
33     UniformHandle internalAddUniformArray(uint32_t visibility,
34                                           GrSLType type,
35                                           GrSLPrecision precision,
36                                           const char* name,
37                                           bool mangleName,
38                                           int arrayCount,
39                                           const char** outName) override;
40 
41     void appendUniformDecls(GrShaderFlags visibility, SkString*) const override;
42 
43     // Manually set uniform locations for all our uniforms.
44     void bindUniformLocations(GrGLuint programID, const GrGLCaps& caps);
45 
46     // Updates the loction of the Uniforms if we cannot bind uniform locations manually
47     void getUniformLocations(GrGLuint programID, const GrGLCaps& caps);
48 
49     const GrGLGpu* glGpu() const;
50 
51     typedef GrGLProgramDataManager::UniformInfo UniformInfo;
52     typedef GrGLProgramDataManager::UniformInfoArray UniformInfoArray;
53 
54     UniformInfoArray fUniforms;
55 
56     friend class GrGLProgramBuilder;
57 
58     typedef GrGLSLUniformHandler INHERITED;
59 };
60 
61 #endif
62