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Lenheart
2026-02-08 16:20:50 +08:00
parent 0ae47e5d6a
commit 8b88904ef7
72 changed files with 5963 additions and 2038 deletions
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354
source/EngineFrame/Render/RenderManager.cpp
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@@ -22,7 +22,7 @@ RenderManager::RenderManager(SDL_Window *window)
int width, height;
SDL_GetWindowSize(window, &width, &height);
// 设置视口
glViewport(0, 0, width, height);
SetViewport(SDL_Rect{0, 0, width, height});
// 设置窗口尺寸
_windowWidth = width;
_windowHeight = height;
@@ -33,7 +33,7 @@ RenderManager::RenderManager(SDL_Window *window)
_UIOrthoMatrix = glm::ortho(0.0f, (float)width, (float)height, 0.0f, -1.0f, 1.0f);
// 设置清屏颜色
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// 启用混合模式
glEnable(GL_BLEND);
@@ -44,6 +44,8 @@ RenderManager::RenderManager(SDL_Window *window)
InitShaderProgram();
// 初始化绘制2D纹理缓冲程序
Init2DTextureProgram();
// 初始化绘制矩形缓冲程序
InitRectProgram();
// 设定默认使用的着色器程序和缓冲程序
SetCurrentShaderProgram("normal");
@@ -79,17 +81,17 @@ void RenderManager::InitShaderProgram()
{
if (!groupData.is_object())
{
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "着色器组 %s 格式错误，跳过\n", groupName.c_str());
SDL_LogError(0, "着色器组 %s 格式错误，跳过\n", groupName.c_str());
continue;
}
if (!groupData.contains("vertex") || !groupData["vertex"].is_string())
{
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "组 %s 缺少 vertex 路径，跳过\n", groupName.c_str());
SDL_LogError(0, "组 %s 缺少 vertex 路径，跳过\n", groupName.c_str());
continue;
}
if (!groupData.contains("fragment") || !groupData["fragment"].is_string())
{
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "组 %s 缺少 fragment 路径，跳过\n", groupName.c_str());
SDL_LogError(0, "组 %s 缺少 fragment 路径，跳过\n", groupName.c_str());
continue;
}
std::string vertPath = groupData["vertex"].get<std::string>();
@@ -99,7 +101,7 @@ void RenderManager::InitShaderProgram()
GLuint fragmentShader = CompileShader(GL_FRAGMENT_SHADER, fragPath);
if (vertexShader == 0 || fragmentShader == 0)
{
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "组 %s 着色器编译失败，跳过\n", groupName.c_str());
SDL_LogError(0, "组 %s 着色器编译失败，跳过\n", groupName.c_str());
continue;
}
@@ -113,7 +115,7 @@ void RenderManager::InitShaderProgram()
{
char infoLog[512];
glGetProgramInfoLog(program, 512, nullptr, infoLog);
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "组 %s 着色器链接失败，失败原因: %s\n", groupName.c_str(), infoLog);
SDL_LogError(0, "组 %s 着色器链接失败，失败原因: %s\n", groupName.c_str(), infoLog);
}
_shaderProgramMap[groupName] = program;
@@ -142,10 +144,10 @@ void RenderManager::Init2DTextureProgram()
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_DYNAMIC_DRAW);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STREAM_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_DYNAMIC_DRAW);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STREAM_DRAW);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof(float), (void *)0);
glEnableVertexAttribArray(0);
@@ -158,126 +160,71 @@ void RenderManager::Init2DTextureProgram()
glUseProgram(_currentShaderProgram);
// 获取uniform变量位置
GLuint _uModelLoc = glGetUniformLocation(_currentShaderProgram, "uModel");
GLuint _uViewProjLoc = glGetUniformLocation(_currentShaderProgram, "uViewProj");
GLuint _uTextureLoc = glGetUniformLocation(_currentShaderProgram, "uTexture");
if (_uModelLoc == -1 || _uViewProjLoc == -1 || _uTextureLoc == -1)
GLint _uModelLoc = glGetUniformLocation(_currentShaderProgram, "uModel");
GLint _uViewProjLoc = glGetUniformLocation(_currentShaderProgram, "uViewProj");
GLint _uTextureLoc = glGetUniformLocation(_currentShaderProgram, "uTexture");
GLint _uOpacityLoc = glGetUniformLocation(_currentShaderProgram, "uOpacity");
if (_uModelLoc == -1 || _uViewProjLoc == -1 || _uTextureLoc == -1 || _uOpacityLoc == -1)
{
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "无法获取着色器 uniform 变量位置\n");
SDL_LogError(0, "无法获取着色器 uniform 变量位置\n");
}
std::vector<GLuint> uniformLocs = {_uModelLoc, _uViewProjLoc, _uTextureLoc};
std::vector<GLint> uniformLocs = {_uModelLoc, _uViewProjLoc, _uTextureLoc, _uOpacityLoc};
DrawLogicFunc drawFunc = [this](
RefPtr<Texture> textureObj, const SDL_Rect *srcrect, const SDL_FRect *dstrect, const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip, void *userdata)
{
GLuint texture = textureObj->getID();
if (!texture || !dstrect)
return;
glUseProgram(_currentShaderProgram);
glm::mat4 model = glm::mat4(1.0f);
// 平移
model = glm::translate(model, glm::vec3(dstrect->x, dstrect->y, 0.0f));
// 计算旋转中心
float centerX = center ? center->x : dstrect->w * 0.5f;
float centerY = center ? center->y : dstrect->h * 0.5f;
// 旋转中心平移
model = glm::translate(model, glm::vec3(centerX, centerY, 0.0f));
// 旋转
if (angle != 0.0)
{
model = glm::rotate(model, glm::radians(static_cast<float>(angle)), glm::vec3(0.0f, 0.0f, 1.0f));
}
// 旋转中心平移
model = glm::translate(model, glm::vec3(-centerX, -centerY, 0.0f));
// 缩放和翻转
float scaleX = dstrect->w;
float scaleY = dstrect->h;
// 应用翻转（通过负缩放实现）
if (flip & SDL_FLIP_HORIZONTAL)
scaleX = -scaleX;
if (flip & SDL_FLIP_VERTICAL)
scaleY = -scaleY;
model = glm::scale(model, glm::vec3(scaleX, scaleY, 1.0f));
// 翻转后的位置补偿
if (flip & SDL_FLIP_HORIZONTAL)
{
model = glm::translate(model, glm::vec3(-1.0f, 0.0f, 0.0f));
}
if (flip & SDL_FLIP_VERTICAL)
{
model = glm::translate(model, glm::vec3(0.0f, -1.0f, 0.0f));
}
// 设置着色器 uniforms
glUniformMatrix4fv(_currentRenderParams.UnimLocs[0], 1, GL_FALSE, glm::value_ptr(model));
glUniformMatrix4fv(_currentRenderParams.UnimLocs[1], 1, GL_FALSE, glm::value_ptr(_OrthoMatrix));
// 绑定纹理并设置采样器
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glUniform1i(_currentRenderParams.UnimLocs[2], 0);
// 处理纹理裁剪
float texWidth = (float)textureObj->getSize().width;
float texHeight = (float)textureObj->getSize().height;
// 计算纹理坐标
float minu, minv, maxu, maxv;
if (srcrect)
{
minu = (float)srcrect->x / texWidth;
minv = (float)srcrect->y / texHeight;
maxu = (float)(srcrect->x + srcrect->w) / texWidth;
maxv = (float)(srcrect->y + srcrect->h) / texHeight;
}
else
{
minu = 0.0f;
minv = 0.0f;
maxu = 1.0f;
maxv = 1.0f;
}
// 计算顶点位置（单位矩形，通过模型变换进行缩放和平移）
float minx = 0.0f;
float miny = 0.0f;
float maxx = 1.0f;
float maxy = 1.0f;
// 创建顶点数据（位置 + 纹理坐标）
float vertices[] = {
// 位置 // 纹理坐标
minx, miny, minu, minv, // 左上
maxx, miny, maxu, minv, // 右上
maxx, maxy, maxu, maxv, // 右下
minx, maxy, minu, maxv // 左下
};
// 更新VBO数据
glBindBuffer(GL_ARRAY_BUFFER, _currentRenderParams.VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_DYNAMIC_DRAW);
// 绘制纹理
glBindVertexArray(_currentRenderParams.VAO);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
};
GL_RenderParams bufferObject = {VAO, VBO, EBO, uniformLocs, drawFunc};
GL_RenderParams bufferObject = {VAO, VBO, EBO, uniformLocs, nullptr};
AddBufferObject("2DTexture", bufferObject);
}
void RenderManager::InitRectProgram()
{
// 单位矩形顶点（仅位置，左下角(0,0)，右上角(1,1)）
float vertices[] = {
0.0f, 0.0f, // 左下
1.0f, 0.0f, // 右下
1.0f, 1.0f, // 右上
0.0f, 1.0f // 左上
};
unsigned int indices[] = {0, 1, 2, 2, 3, 0}; // 固定索引
GLuint VAO, VBO, EBO;
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
// 绑定并上传数据（GL_STATIC_DRAW：数据仅初始化一次，后续不修改）
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); // 静态数据
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW); // 静态数据
// 配置顶点属性（仅位置，2个float，步长2*sizeof(float)）
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2 * sizeof(float), (void *)0);
glEnableVertexAttribArray(0);
// 解绑（恢复默认状态）
glBindVertexArray(0);
glBindBuffer(GL_ARRAY_BUFFER, 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
// 获取矩形着色器的Uniform位置（需提前准备矩形专用着色器）
SetCurrentShaderProgram("rect"); // 假设着色器配置中“rect”为矩形专用着色器
glUseProgram(_currentShaderProgram);
GLint uModelLoc = glGetUniformLocation(_currentShaderProgram, "uModel");
GLint uViewProjLoc = glGetUniformLocation(_currentShaderProgram, "uViewProj");
GLint uColorLoc = glGetUniformLocation(_currentShaderProgram, "uColor");
if (uModelLoc == -1 || uViewProjLoc == -1 || uColorLoc == -1)
{
SDL_LogError(0, "矩形着色器Uniform变量获取失败\n uModelLoc: %d, uViewProjLoc: %d, uColorLoc: %d\n", uModelLoc, uViewProjLoc, uColorLoc);
return;
}
std::vector<GLint> uniformLocs = {uModelLoc, uViewProjLoc, uColorLoc};
// 将矩形渲染参数加入管理器
GL_RenderParams rectBuffer = {VAO, VBO, EBO, uniformLocs, nullptr};
AddBufferObject("Rect", rectBuffer);
}
void RenderManager::SetCurrentShaderProgram(std::string name)
{
if (_shaderProgramMap.find(name) != _shaderProgramMap.end())
@@ -285,7 +232,7 @@ void RenderManager::SetCurrentShaderProgram(std::string name)
this->_currentShaderProgram = _shaderProgramMap[name];
}
else
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "找不到着色器程序: %s\n", name.c_str());
SDL_LogError(0, "找不到着色器程序: %s\n", name.c_str());
}
void RenderManager::SetCurrentBufferObject(std::string name)
@@ -294,8 +241,8 @@ void RenderManager::SetCurrentBufferObject(std::string name)
{
this->_currentRenderParams = _RenderParamsMap[name];
}
else
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "找不到渲染参数: %s\n", name.c_str());
// else
// SDL_LogError(0, "找不到渲染参数: %s\n", name.c_str());
}
void RenderManager::ClearScreen()
@@ -320,13 +267,147 @@ void RenderManager::CloseClipRect()
glDisable(GL_SCISSOR_TEST);
}
void RenderManager::DrawTexture(RefPtr<Texture> textureObj, const SDL_Rect *srcrect, const SDL_FRect *dstrect, const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip, void *userdata)
void RenderManager::SetOpacity(float opacity)
{
_frameRenderCount++;
if (_currentRenderParams.DrawFunc != nullptr)
_currentRenderParams.DrawFunc(textureObj, srcrect, dstrect, angle, center, flip, userdata);
this->opacity_ = opacity;
}
float RenderManager::GetOpacity()
{
return this->opacity_;
}
void RenderManager::SetMatrix(glm::mat4 matrix)
{
this->_currentMatrix = matrix;
}
glm::mat4 RenderManager::GetMatrix()
{
return this->_currentMatrix;
}
void RenderManager::SetBlendMode(LE_BlEND_MODE blendMode)
{
switch (blendMode)
{
/**常规混合 */
case NONE:
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
break;
/**线性减淡 */
case LINEARDODGE:
glBlendFuncSeparate(GL_SRC_ALPHA, GL_ONE, GL_ZERO, GL_ONE);
break;
}
}
void RenderManager::DrawTexture(RefPtr<Texture> textureObj)
{
_frameRenderCount++; // 统计渲染次数
glUseProgram(_currentShaderProgram);
GLuint texture = textureObj->getID();
float texWidth = (float)textureObj->getSize().width;
float texHeight = (float)textureObj->getSize().height;
glm::mat4 modelMat = _currentMatrix;
modelMat = glm::scale(modelMat, glm::vec3(texWidth, texHeight, 1.0f));
// 设置着色器 uniforms
glUniformMatrix4fv(_currentRenderParams.UnimLocs[0], 1, GL_FALSE, glm::value_ptr(modelMat));
glUniformMatrix4fv(_currentRenderParams.UnimLocs[1], 1, GL_FALSE, glm::value_ptr(_OrthoMatrix));
// 绑定纹理并设置采样器
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, texture);
glUniform1i(_currentRenderParams.UnimLocs[2], 0);
glUniform1f(_currentRenderParams.UnimLocs[3], opacity_);
// 计算纹理坐标
float minu, minv, maxu, maxv;
if (false)
{
// minu = (float)srcrect->x / texWidth;
// minv = (float)srcrect->y / texHeight;
// maxu = (float)(srcrect->x + srcrect->w) / texWidth;
// maxv = (float)(srcrect->y + srcrect->h) / texHeight;
}
else
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "找不到渲染逻辑函数\n");
{
minu = 0.0f;
minv = 0.0f;
maxu = 1.0f;
maxv = 1.0f;
}
// 计算顶点位置（单位矩形，通过模型变换进行缩放和平移）
float minx = 0.0f;
float miny = 0.0f;
float maxx = 1.0f;
float maxy = 1.0f;
// 创建顶点数据（位置 + 纹理坐标）
float vertices[] = {
// 位置 // 纹理坐标
minx, miny, minu, minv, // 左上
maxx, miny, maxu, minv, // 右上
maxx, maxy, maxu, maxv, // 右下
minx, maxy, minu, maxv // 左下
};
// 更新VBO数据
glBindBuffer(GL_ARRAY_BUFFER, _currentRenderParams.VBO);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STREAM_DRAW);
// 绘制纹理
glBindVertexArray(_currentRenderParams.VAO);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
glBindVertexArray(0);
glBindTexture(GL_TEXTURE_2D, 0); // 解绑纹理
}
void RenderManager::DrawRect(const SDL_Rect *rect, glm::vec4 color)
{
// 1. 合法性检查（补充VAO/EBO存在性检查）
if (!rect || _currentShaderProgram == 0 || _currentRenderParams.VAO == 0 || _currentRenderParams.EBO == 0)
{
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "DrawRect：参数无效或缓冲未初始化\n");
return;
}
SetCurrentShaderProgram("rect");
SetCurrentBufferObject("Rect");
_frameRenderCount++;
// 绑定VAO和EBO（GPU获取顶点数据和格式的关键）
glBindVertexArray(_currentRenderParams.VAO);
// 3. 计算模型矩阵（通过缩放+平移，将单位矩形变换到目标位置和大小）
glm::mat4 model = glm::mat4(1.0f);
// 先平移到rect的左上角（OpenGL正交投影下Y轴向下，与SDL_Rect一致）
model = glm::translate(model, glm::vec3((float)rect->x, (float)rect->y, 0.0f));
// 再缩放到rect的宽高
model = glm::scale(model, glm::vec3((float)rect->w, (float)rect->h, 1.0f));
// 4. 激活着色器并设置Uniform
glUseProgram(_currentShaderProgram);
// 4.1 模型矩阵（传递变换后的矩阵）
glUniformMatrix4fv(_currentRenderParams.UnimLocs[0], 1, GL_FALSE, glm::value_ptr(model));
// 4.2 投影矩阵（复用当前正交矩阵）
glUniformMatrix4fv(_currentRenderParams.UnimLocs[1], 1, GL_FALSE, glm::value_ptr(_OrthoMatrix));
// 4.3 颜色
glUniform4fv(_currentRenderParams.UnimLocs[2], 1, glm::value_ptr(color));
// 5. 绘制矩形（6个索引对应2个三角形）
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
// 6. 解绑资源（避免影响后续绘制）
glBindVertexArray(0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
SetCurrentShaderProgram("normal");
SetCurrentBufferObject("2DTexture");
}
void RenderManager::SetOrthoMatrixType(int type)
@@ -347,6 +428,17 @@ void RenderManager::SetOrthoMatrix(glm::mat4 matrix)
_OrthoMatrix = matrix;
}
void RenderManager::SetViewport(SDL_Rect viewport)
{
_viewport = viewport;
glViewport(viewport.x, viewport.y, viewport.w, viewport.h);
}
SDL_Rect RenderManager::GetViewport()
{
return _viewport;
}
GLuint RenderManager::CompileShader(GLenum type, std::string Path)
{
std::ifstream Source("shader/" + Path);