0707a6d5cd
- 删除多余的注释并简化applyRenderState逻辑 - 增强了丢失着色器制服和程序的错误记录 改进了绘制调用中的VAO/VBO绑定和属性管理 在渲染系统中增加了高兴功能的加载支持 - 调整线程断言逻辑以更好地处理初始化 - 在缓冲区绑定期间启用顶点属性数组 - 禁用深度测试并启用2D渲染的混合 - 更新了着色器源代码定义和正确的行结束符 - 导出ShaderProgram类以实现DLL可见性 - 通过删除不必要的注释简化纯色着色器 - 集成GLFW窗口管理和OpenGL上下文设置 - 实现了framebuffer resize回调来调整视口 - 添加了基本的渲染循环矩形镶嵌示例 - 确保在退出时正确清理着色器和渲染资源
277 lines
11 KiB
C++
277 lines
11 KiB
C++
#pragma once
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#include <glad/glad.h>
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#include <glm/glm.hpp>
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#include <glm/gtc/type_ptr.hpp>
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#include <functional>
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#include <queue>
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#include <mutex>
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#include <thread>
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#include <stack>
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#include <string>
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#include <memory>
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#include <atomic>
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// 向前声明 spdlog::logger 以避免在头文件中包含其完整定义
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namespace spdlog {
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class logger;
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}
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class VIVID_2D_MYDLL_API RenderSystem {
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public:
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RenderSystem() = delete;
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~RenderSystem() = delete;
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RenderSystem(const RenderSystem&) = delete;
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RenderSystem& operator=(const RenderSystem&) = delete;
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using GLADloader = void* (*)(const char* name);
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// ================== 日志系统管理 ==================
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/**
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* @brief 初始化日志系统。必须在任何日志调用之前，在主函数开始时调用。
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*/
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static void InitializeLogging();
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/**
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* @brief 关闭日志系统。应在主函数结束时调用以确保所有日志都被刷新。
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*/
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static void ShutdownLogging();
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// ================== 初始化与线程管理 ==================
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static void initRenderThread();
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static void beginInitialization();
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static void finishInitialization();
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static bool isOnRenderThread();
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static bool isInInitPhase();
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static void assertOnRenderThread();
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static void assertOnRenderThreadOrInit();
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static void loadGLFunctions(GLADloader loader);
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// ================== 渲染命令队列 ==================
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static void recordRenderCall(std::function<void()>&& renderCall);
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static void replayQueue();
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// ================== OpenGL 状态管理封装 ==================
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static void enable(GLenum capability);
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static void disable(GLenum capability);
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static void pushState();
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static void popState();
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static size_t getStateStackSize();
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static void clearColor(float r, float g, float b, float a);
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static void clear(GLbitfield mask);
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static void viewport(int x, int y, int width, int height);
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// ================== VAO / VBO / EBO 操作 ==================
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static GLuint GenVertexArrays();
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static void DeleteVertexArrays(GLuint vao);
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static void BindVertexArray(GLuint vao);
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static GLuint GenBuffers();
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static void DeleteBuffers(GLuint buffer);
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static void BindBuffer(GLenum target, GLuint buffer);
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static void BufferData(GLenum target, GLsizeiptr size, const void* data, GLenum usage);
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// ================== Uniform 设置 ==================
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static void uniform1i(GLint location, int value);
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static void uniform1f(GLint location, float value);
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static void uniform2f(GLint location, float x, float y);
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static void uniform3f(GLint location, float x, float y, float z);
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static void uniform4f(GLint location, float x, float y, float z, float w);
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static void uniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
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static void uniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
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static void uniform2f(GLint location, const glm::vec2& vec);
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static void uniform3f(GLint location, const glm::vec3& vec);
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static void uniform4f(GLint location, const glm::vec4& vec);
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static void uniformMatrix3(GLint location, const glm::mat3& matrix, bool transpose = false);
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static void uniformMatrix4(GLint location, const glm::mat4& matrix, bool transpose = false);
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static GLint getUniformLocation(GLuint program, const std::string& name);
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// ================== 绘制命令 ==================
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static void lineWidth(float width);
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static void drawElements(GLenum mode, GLsizei count, GLenum type, const void* indices);
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static void drawArrays(GLenum mode, GLint first, GLsizei count);
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// ================== 混合模式 ==================
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static void enableBlend();
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static void disableBlend();
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static void blendFunc(GLenum sfactor, GLenum dfactor);
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static void defaultBlendFunc();
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// ================== 着色器程序管理 ==================
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static GLuint createProgram();
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static GLint getCurrentProgram();
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static void attachShader(GLuint program, GLuint shader);
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static void linkProgram(GLuint program);
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static GLint getProgrami(GLuint program, GLenum pname);
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static std::string getProgramInfoLog(GLuint program);
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static void detachShader(GLuint program, GLuint shader);
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static void deleteProgram(GLuint program);
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static GLuint linkProgram(GLuint vertexShader, GLuint fragmentShader);
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static GLuint linkProgram(GLuint vertexShader, GLuint geometryShader, GLuint fragmentShader);
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static void useProgram(GLuint program);
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// ================== 着色器管理 ==================
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static GLuint createShader(GLenum type);
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static void shaderSource(GLuint shader, const std::string& source);
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static void compileShader(GLuint shader);
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static GLint getShaderi(GLuint shader, GLenum pname);
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static std::string getShaderInfoLog(GLuint shader);
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static void deleteShader(GLuint shader);
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static GLuint compileShader(GLenum type, const std::string& source);
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// ================== 深度测试 ==================
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static void depthFunc(GLenum func);
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static void depthMask(bool flag);
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static void clearDepth(double depth);
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static void enableDepthTest();
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static void disableDepthTest();
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// ================== 纹理管理 ==================
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static void bindTexture(GLuint texture);
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static void getTexImage(GLenum target, GLint level, GLenum format, GLenum type, void* pixels);
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static void activeTexture(GLenum texture);
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static GLuint genTextures();
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static void deleteTextures(GLuint texture);
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static void texImage2D(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void* pixels);
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static void texParameteri(GLenum target, GLenum pname, GLint param);
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static void setTextureMinFilter(GLenum filter);
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static void setTextureMagFilter(GLenum filter);
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static void setTextureWrapS(GLenum wrap);
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static void setTextureWrapT(GLenum wrap);
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static GLuint createDefaultTexture();
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// ================== 顶点属性 ==================
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static void enableVertexAttribArray(GLuint index);
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static void disableVertexAttribArray(GLuint index);
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static void vertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* pointer);
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// ================== 工具方法 ==================
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static void readPixels(int x, int y, int width, int height, GLenum format, GLenum type, void* pixels);
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static bool isExtensionSupported(const std::string& extension);
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static void pixelStore(GLenum pname, GLint param);
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static std::string getVendor();
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static std::string getRenderer();
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static std::string getOpenGLVersion();
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static std::string getGLSLVersion();
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static void logDetailedGLInfo();
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static void setupDefaultState();
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static void checkGLError(const std::string& operation);
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// ================== 获取状态 ==================
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static int getViewportWidth();
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static int getViewportHeight();
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static glm::vec4 getClearColor();
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static size_t getQueueSize();
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private:
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struct RenderState;
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// 私有的、直接执行GL调用的版本
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static void _enable(GLenum capability);
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static void _disable(GLenum capability);
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static void _pushState();
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static void _popState();
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static void _clearColor(float r, float g, float b, float a);
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static void _clear(GLbitfield mask);
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static void _viewport(int x, int y, int width, int height);
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static void _glDeleteVertexArrays(GLuint vao);
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static void _uniform1i(GLint location, int value);
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static void _uniform1f(GLint location, float value);
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static void _uniform2f(GLint location, float x, float y);
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static void _uniform3f(GLint location, float x, float y, float z);
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static void _uniform4f(GLint location, float x, float y, float z, float w);
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static void _uniformMatrix3fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
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static void _uniformMatrix4fv(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value);
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static void _lineWidth(float width);
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static void _drawElements(GLenum mode, GLsizei count, GLenum type, const void* indices);
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static void _drawArrays(GLenum mode, GLint first, GLsizei count);
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static void _glBindVertexArray(GLuint vao);
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static void _enableBlend();
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static void _disableBlend();
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static void _blendFunc(GLenum sfactor, GLenum dfactor);
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static void _attachShader(GLuint program, GLuint shader);
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static void _linkProgram(GLuint program);
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static void _detachShader(GLuint program, GLuint shader);
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static void _deleteProgram(GLuint program);
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static void _useProgram(GLuint program);
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static void _shaderSource(GLuint shader, const std::string& source);
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static void _compileShader(GLuint shader);
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static void _deleteShader(GLuint shader);
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static void _depthFunc(GLenum func);
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static void _depthMask(bool flag);
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static void _clearDepth(double depth);
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static void _enableDepthTest();
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static void _disableDepthTest();
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static void _bindTexture(GLuint texture);
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static void _getTexImage(GLenum target, GLint level, GLenum format, GLenum type, void* pixels);
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static void _activeTexture(GLenum texture);
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static void _deleteTextures(GLuint texture);
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static void _texImage2D(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void* pixels);
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static void _texParameteri(GLenum target, GLenum pname, GLint param);
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static void _glBindBuffer(GLenum target, GLuint buffer);
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static void _glBufferData(GLenum target, GLsizeiptr size, const void* data, GLenum usage);
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static void _glDeleteBuffers(GLuint buffer);
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static void _enableVertexAttribArray(GLuint index);
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static void _disableVertexAttribArray(GLuint index);
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static void _vertexAttribPointer(GLuint index, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* pointer);
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static void _readPixels(int x, int y, int width, int height, GLenum format, GLenum type, void* pixels);
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static void _pixelStore(GLenum pname, GLint param);
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static void _checkGLError(const std::string& operation);
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static std::string getGLErrorString(GLenum error);
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// 静态成员变量
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static std::thread::id s_RenderThreadId;
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static std::atomic<bool> s_IsInInit;
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static std::queue<std::function<void()>> s_RenderQueue;
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static std::mutex s_RenderQueueMutex;
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static std::atomic<bool> s_IsReplayingQueue;
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// ================== RenderState 结构体和实现 ==================
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struct RenderSystem::RenderState {
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GLint currentProgram = 0;
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GLboolean blendEnabled = GL_FALSE;
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GLboolean depthTestEnabled = GL_FALSE;
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GLint blendSrcFactor = GL_SRC_ALPHA;
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GLint blendDstFactor = GL_ONE_MINUS_SRC_ALPHA;
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GLint activeTexture = GL_TEXTURE0;
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GLint boundTexture = 0;
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glm::vec4 clearColor{ 0.0f, 0.0f, 0.0f, 1.0f };
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glm::ivec4 viewport{ 0, 0, 800, 600 };
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RenderState() {
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glGetIntegerv(GL_CURRENT_PROGRAM, ¤tProgram);
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blendEnabled = glIsEnabled(GL_BLEND);
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depthTestEnabled = glIsEnabled(GL_DEPTH_TEST);
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glGetIntegerv(GL_BLEND_SRC_RGB, &blendSrcFactor);
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glGetIntegerv(GL_BLEND_DST_RGB, &blendDstFactor);
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glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTexture);
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glGetIntegerv(GL_TEXTURE_BINDING_2D, &boundTexture);
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glGetFloatv(GL_COLOR_CLEAR_VALUE, &clearColor[0]);
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glGetIntegerv(GL_VIEWPORT, &viewport[0]);
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while (glGetError() != GL_NO_ERROR) {}
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}
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void restore() {
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glViewport(viewport.x, viewport.y, viewport.z, viewport.w);
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glClearColor(clearColor.r, clearColor.g, clearColor.b, clearColor.a);
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glUseProgram(currentProgram);
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glActiveTexture(activeTexture);
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glBindTexture(GL_TEXTURE_2D, boundTexture);
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if (blendEnabled) glEnable(GL_BLEND); else glDisable(GL_BLEND);
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glBlendFunc(blendSrcFactor, blendDstFactor);
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if (depthTestEnabled) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST);
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while (glGetError() != GL_NO_ERROR) {}
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}
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};
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static std::stack<RenderState> s_StateStack;
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static int s_ViewportWidth;
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static int s_ViewportHeight;
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static glm::vec4 s_ClearColorValue;
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static std::shared_ptr<spdlog::logger> s_Logger;
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}; |