Enhance OpenGLSwapChain with presentation control

- Add PresentMode enum (Immediate, VSync, Mailbox, Fifo)
- Add SurfaceFormat enum for color formats
- Add Initialize() overloads with vsync, width/height, PresentMode
- Add Resize(), SetVSync() for runtime control
- Add GetWidth/Height/FramebufferWidth/FramebufferHeight
- Add ShouldClose, SetShouldClose, PollEvents for window management
- Implement using GLFW for window/swap control

engine/include/XCEngine/RHI/OpenGL/OpenGLSwapChain.h

@@ -1,25 +1,60 @@
 #pragma once
 
 #include <GLFW/glfw3.h>
+#include <cstdint>
 
 namespace XCEngine {
 namespace RHI {
 
+enum class PresentMode {
+    Immediate,
+    VSync,
+    Mailbox,
+    Fifo
+};
+
+enum class SurfaceFormat {
+    RGBA8,
+    RGBA16F,
+    RGBA32F,
+    BGRA8
+};
+
 class OpenGLSwapChain {
 public:
     OpenGLSwapChain();
     ~OpenGLSwapChain();
 
-    bool Initialize(GLFWwindow* window);
+    bool Initialize(GLFWwindow* window, bool vsync = true);
+    bool Initialize(GLFWwindow* window, int width, int height, PresentMode mode = PresentMode::VSync);
     void Shutdown();
 
     void Present();
     void SwapBuffers();
+    void Resize(int width, int height);
+    void SetVSync(bool enabled);
+    bool IsVSync() const { return m_vsync; }
+
+    void SetFramebufferSize(int width, int height);
+    int GetWidth() const { return m_width; }
+    int GetHeight() const { return m_height; }
+    int GetFramebufferWidth() const { return m_framebufferWidth; }
+    int GetFramebufferHeight() const { return m_framebufferHeight; }
 
     GLFWwindow* GetWindow() const { return m_window; }
 
+    bool ShouldClose() const;
+    void SetShouldClose(bool shouldClose);
+    void PollEvents();
+
 private:
     GLFWwindow* m_window;
+    int m_width;
+    int m_height;
+    int m_framebufferWidth;
+    int m_framebufferHeight;
+    bool m_vsync;
+    PresentMode m_presentMode;
 };
 
 } // namespace RHI