68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
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// GLESRenderer.h
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#pragma once
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#include <GLES3/gl3.h>
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#include <SDL2/SDL.h>
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#include <vector>
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#include <map>
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#include <string>
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class GLESRenderer
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{
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public:
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GLESRenderer(SDL_Window *window);
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~GLESRenderer();
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bool Initialize();
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void Clear();
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void Present();
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// 模拟 SDL_RenderCopy 功能
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void RenderCopy(GLuint texture, const SDL_Rect *srcrect, const SDL_Rect *dstrect);
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void RenderCopyEx(GLuint texture, const SDL_Rect *srcrect, const SDL_Rect *dstrect,
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double angle, const SDL_Point *center, SDL_RendererFlip flip);
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// // 纹理管理
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// GLuint CreateTexture(const std::string &path);
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// GLuint CreateTextureFromSurface(SDL_Surface *surface);
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// void DestroyTexture(GLuint texture);
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// // 设置渲染状态
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// void SetDrawColor(Uint8 r, Uint8 g, Uint8 b, Uint8 a);
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private:
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SDL_Window *m_window;
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SDL_GLContext m_glContext;
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// 着色器程序
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GLuint m_shaderProgram;
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GLuint m_vertexShader;
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GLuint m_fragmentShader;
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// 顶点缓冲区对象
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GLuint m_vbo;
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GLuint m_vao;
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// 批处理系统
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struct RenderCommand
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{
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GLuint texture;
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SDL_Rect dstrect;
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double angle;
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SDL_Point center;
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SDL_RendererFlip flip;
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int z_order;
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};
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std::vector<RenderCommand> m_renderBatch;
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// 编译着色器
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bool CompileShader(const char *source, GLenum type, GLuint &shader);
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bool LinkProgram(GLuint program);
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// 创建着色器程序
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bool CreateShaderProgram();
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// 设置正交投影矩阵
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void SetOrthographicProjection(int width, int height);
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};
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