src/gpu/gl/GrGLUniformHandler.h

   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:
  21     const GrGLSLShaderVar& getUniformVariable(UniformHandle u) const override {
  22         return fUniforms[u.toIndex()].fVariable;
  23     }
  24
  25     const char* getUniformCStr(UniformHandle u) const override {
  26         return this->getUniformVariable(u).c_str();
  27     }
  28 private:
  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(ShaderVisibility, 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