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将游戏层和UI层分开渲染 并提高了缩放质量

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This commit is contained in:
Lenheart
2025-10-26 14:38:14 +08:00
parent 585724b512
commit dc0213dc16
5 changed files with 56 additions and 24 deletions
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19
source/EngineFrame/Render/RenderManager.cpp
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@@ -26,8 +26,11 @@ RenderManager::RenderManager(SDL_Window *window)
// 设置窗口尺寸
_windowWidth = width;
_windowHeight = height;
// 设置正交投影矩阵
_orthoMatrix = glm::ortho(0.0f, (float)width, (float)height, 0.0f, -1.0f, 1.0f);
// 游戏的初始正交投影矩阵
_GameOrthoMatrix = glm::ortho(0.0f, (float)width / 1.2f, (float)height / 1.2f, 0.0f, -1.0f, 1.0f);
// UI的初始正交投影矩阵
_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);
@@ -217,7 +220,7 @@ void RenderManager::Init2DTextureProgram()
// 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));
glUniformMatrix4fv(_currentRenderParams.UnimLocs[1], 1, GL_FALSE, glm::value_ptr(_OrthoMatrix));
// 绑定纹理并设置采样器
glActiveTexture(GL_TEXTURE0);
@@ -297,6 +300,7 @@ void RenderManager::SetCurrentBufferObject(std::string name)
void RenderManager::ClearScreen()
{
glClear(GL_COLOR_BUFFER_BIT);
_frameRenderCount = 0;
}
void RenderManager::SwapBuffer()
@@ -317,12 +321,21 @@ void RenderManager::CloseClipRect()
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)
{
_frameRenderCount++;
if (_currentRenderParams.DrawFunc != nullptr)
_currentRenderParams.DrawFunc(textureObj, srcrect, dstrect, angle, center, flip, userdata);
else
SDL_LogError(SDL_LOG_CATEGORY_ERROR, "找不到渲染逻辑函数\n");
}
void RenderManager::SetOrthoMatrixType(int type)
{
if (type == 0)
_OrthoMatrix = _GameOrthoMatrix;
else
_OrthoMatrix = _UIOrthoMatrix;
}
GLuint RenderManager::CompileShader(GLenum type, std::string Path)
{
std::ifstream Source("shader/" + Path);

14
source/EngineFrame/Render/RenderManager.h
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@@ -31,8 +31,12 @@ private:
// 窗口尺寸
int _windowWidth;
int _windowHeight;
// 正交投影矩阵
glm::mat4 _orthoMatrix;
// 游戏正交投影矩阵
glm::mat4 _GameOrthoMatrix;
// UI的正交投影矩阵
glm::mat4 _UIOrthoMatrix;
// 渲染的正交投影矩阵
glm::mat4 _OrthoMatrix;
// 渲染器上下文
SDL_GLContext _ctx;
@@ -46,6 +50,9 @@ private:
// 当前使用渲染参数
GL_RenderParams _currentRenderParams;
public:
// 单帧渲染调用次数
int _frameRenderCount = 0;
public:
RenderManager(SDL_Window *window);
~RenderManager();
@@ -69,6 +76,9 @@ public:
void CloseClipRect();
// 绘制纹理
void DrawTexture(RefPtr<Texture> texture, const SDL_Rect *srcrect, const SDL_FRect *dstrect, const double angle, const SDL_FPoint *center, const SDL_RendererFlip flip, void *userdata = nullptr);
// 设置正交投影矩阵类型
void SetOrthoMatrixType(int type);
private:
// 编译着色器

4
source/EngineFrame/Render/Texture.cpp
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@@ -35,9 +35,9 @@ bool Texture::Init(std::string PngPath)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
// 缩小过滤：使用最近邻采样
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// 放大过滤：使用最近邻采样
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
// 处理像素对齐（确保SDL的像素行对齐与OpenGL兼容）
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);