Refactor OpenGL SwapChain HDC management

- OpenGLSwapChain now gets HDC from OpenGLDevice instead of creating its own
- Renamed OpenGLDevice::GetContext() to GetGLContext() for clarity
- Renamed OpenGLDevice::GetDC() to GetPresentationDC() for clarity
- OpenGLDevice now owns the HDC/HGLRC lifecycle
- OpenGLSwapChain::Initialize() now takes OpenGLDevice* parameter
- OpenGLSwapChain::Present() uses device's HDC for SwapBuffers
- Updated minimal test to use new API and capture from frame 25-35
- RenderDoc SetDevice now uses GetGLContext() for proper OpenGL hook

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

@@ -1,11 +1,11 @@
 #pragma once
 
 #include <string>
+#include <Windows.h>
 
 #include "../RHIDevice.h"
 #include "../RHICapabilities.h"
 
-struct HWND__;
 struct HDC__;
 struct HGLRC__;
 
@@ -13,9 +13,10 @@ namespace XCEngine {
 namespace RHI {
 
 using HWND = HWND__*;
-using HDC = HDC__*;
 using HGLRC = HGLRC__*;
 
+class OpenGLSwapChain;
+
 class OpenGLDevice : public RHIDevice {
 public:
     OpenGLDevice();
@@ -24,12 +25,11 @@ public:
     bool Initialize(const RHIDeviceDesc& desc) override;
     void Shutdown() override;
 
-    bool CreateRenderWindow(int width, int height, const char* title, bool enableDebug = false);
     bool InitializeWithExistingWindow(HWND hwnd);
-
+    bool CreateRenderWindow(int width, int height, const char* title, bool enableDebug = false);
     HWND GetWindow() const { return m_hwnd; }
-    HDC GetDC() const { return m_hdc; }
-    HGLRC GetContext() const { return m_hglrc; }
+    HDC GetPresentationDC() const { return m_hdc; }
+    HGLRC GetGLContext() const { return m_hglrc; }
     const RHIDeviceInfo& GetDeviceInfoImpl() const { return m_deviceInfo; }
 
     void SwapBuffers();
@@ -54,14 +54,16 @@ public:
     void* GetNativeHandle() const;
 
 private:
-    HWND m_hwnd;
-    HDC m_hdc;
-    HGLRC m_hglrc;
+    friend class OpenGLSwapChain;
+
+    HWND m_hwnd = nullptr;
+    HDC m_hdc = nullptr;
+    HGLRC m_hglrc = nullptr;
     RHIDeviceInfo m_deviceInfo;
     RHICapabilities m_capabilities;
-    bool m_initialized;
-    bool m_ownsWindow;
-    bool m_shouldClose;
+    bool m_initialized = false;
+    bool m_ownsWindow = false;
+    bool m_shouldClose = false;
 };
 
 } // namespace RHI

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

@@ -4,6 +4,7 @@
 
 #include "../RHISwapChain.h"
 #include "OpenGLTexture.h"
+#include "OpenGLDevice.h"
 
 struct HWND__;
 struct HDC__;
@@ -11,9 +12,6 @@ struct HDC__;
 namespace XCEngine {
 namespace RHI {
 
-using HWND = HWND__*;
-using HDC = HDC__*;
-
 enum class PresentMode {
     Immediate,
     VSync,
@@ -33,8 +31,7 @@ public:
     OpenGLSwapChain();
     ~OpenGLSwapChain() override;
 
-    bool Initialize(HWND window, bool vsync = true);
-    bool Initialize(HWND window, int width, int height, PresentMode mode = PresentMode::VSync);
+    bool Initialize(OpenGLDevice* device, HWND window, int width, int height);
     void Shutdown() override;
 
     void Present(uint32_t syncInterval = 1, uint32_t flags = 0) override;
@@ -52,7 +49,7 @@ public:
     int GetFramebufferHeight() const { return m_framebufferHeight; }
 
     HWND GetWindow() const { return m_hwnd; }
-    HDC GetDC() const { return m_hdc; }
+    HDC GetDC() const { return m_device ? m_device->GetPresentationDC() : nullptr; }
 
     bool ShouldClose() const override;
     void SetShouldClose(bool shouldClose) override;
@@ -63,17 +60,17 @@ public:
     void* GetNativeHandle() override;
 
 private:
-    HWND m_hwnd;
-    HDC m_hdc;
-    int m_width;
-    int m_height;
-    int m_framebufferWidth;
-    int m_framebufferHeight;
-    bool m_vsync;
-    bool m_shouldClose;
-    bool m_fullscreen;
-    PresentMode m_presentMode;
-    OpenGLTexture* m_backBufferTexture;
+    OpenGLDevice* m_device = nullptr;
+    HWND m_hwnd = nullptr;
+    int m_width = 0;
+    int m_height = 0;
+    int m_framebufferWidth = 0;
+    int m_framebufferHeight = 0;
+    bool m_vsync = true;
+    bool m_shouldClose = false;
+    bool m_fullscreen = false;
+    PresentMode m_presentMode = PresentMode::VSync;
+    OpenGLTexture* m_backBufferTexture = nullptr;
 };
 
 } // namespace RHI