| // Copyright 2017 The Cobalt Authors. 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_BASE_H_ |
| #define COBALT_RENDERER_RASTERIZER_EGL_SHADER_BASE_H_ |
| |
| #include "cobalt/renderer/egl_and_gles.h" |
| |
| namespace cobalt { |
| namespace renderer { |
| namespace rasterizer { |
| namespace egl { |
| |
| class ShaderProgramBase; |
| |
| // ShaderBase represents vertex/fragment/etc. shaders. It provides methods |
| // to access GLES functionality that child classes can use. This should only |
| // be used as part of the ShaderProgram template class. |
| class ShaderBase { |
| public: |
| virtual ~ShaderBase() {} |
| |
| virtual const char* GetSource() const = 0; |
| |
| protected: |
| void BindAttribLocation(GLuint program, GLuint location, const char* name); |
| GLuint GetUniformLocation(GLuint program, const char* name); |
| void SetTextureUnitForUniformSampler(GLuint uniform_location, |
| GLenum texture_unit); |
| |
| private: |
| friend class ShaderProgramBase; |
| |
| virtual void InitializePreLink(GLuint program) = 0; |
| virtual void InitializePostLink(GLuint program) = 0; |
| virtual void InitializePostUse() = 0; |
| }; |
| |
| } // namespace egl |
| } // namespace rasterizer |
| } // namespace renderer |
| } // namespace cobalt |
| |
| #endif // COBALT_RENDERER_RASTERIZER_EGL_SHADER_BASE_H_ |