| // Copyright 2017 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef COBALT_RENDERER_RASTERIZER_EGL_SHADER_PROGRAM_H_ |
| #define COBALT_RENDERER_RASTERIZER_EGL_SHADER_PROGRAM_H_ |
| |
| #include "base/compiler_specific.h" |
| #include "cobalt/base/type_id.h" |
| #include "cobalt/renderer/rasterizer/egl/shader_base.h" |
| |
| namespace cobalt { |
| namespace renderer { |
| namespace rasterizer { |
| namespace egl { |
| |
| class ShaderProgramManager; |
| |
| // ShaderProgramBase represents a shader program with vertex and fragment |
| // shaders attached. This should be instantiated via the template ShaderProgram |
| // class. |
| class ShaderProgramBase { |
| public: |
| GLuint GetHandle() const { return handle_; } |
| |
| protected: |
| // Shader programs should only be created and destroyed by the |
| // ShaderProgramManager. |
| friend class ShaderProgramManager; |
| |
| ShaderProgramBase(); |
| virtual ~ShaderProgramBase(); |
| void Create(ShaderBase* vertex_shader, ShaderBase* fragment_shader); |
| void Destroy(ShaderBase* vertex_shader, ShaderBase* fragment_shader); |
| |
| private: |
| GLuint handle_; |
| }; |
| |
| // This template ShaderProgram class represents a shader program with specific |
| // vertex and fragment shaders. The shaders must inherit from ShaderBase. |
| template<typename VertexShader, typename FragmentShader> |
| class ShaderProgram : public ShaderProgramBase { |
| public: |
| const VertexShader& GetVertexShader() const { |
| return vertex_shader_; |
| } |
| const FragmentShader& GetFragmentShader() const { |
| return fragment_shader_; |
| } |
| static base::TypeId GetTypeId() { |
| return base::GetTypeId<ShaderProgram<VertexShader, FragmentShader> >(); |
| } |
| |
| private: |
| // Shader programs should only be created and destroyed by the |
| // ShaderProgramManager. |
| friend class ShaderProgramManager; |
| |
| ShaderProgram() { |
| Create(&vertex_shader_, &fragment_shader_); |
| } |
| ~ShaderProgram() override { Destroy(&vertex_shader_, &fragment_shader_); } |
| |
| VertexShader vertex_shader_; |
| FragmentShader fragment_shader_; |
| }; |
| |
| } // namespace egl |
| } // namespace rasterizer |
| } // namespace renderer |
| } // namespace cobalt |
| |
| #endif // COBALT_RENDERER_RASTERIZER_EGL_SHADER_PROGRAM_H_ |