refactor: back editor host rendering with engine rhi

editor/src/Application.h

@@ -4,6 +4,7 @@
 #include "UI/ImGuiBackendBridge.h"
 #include "UI/ImGuiSession.h"
 
+#include <XCEngine/Rendering/RenderContext.h>
 #include <memory>
 #include <string>
 #include <windows.h>
@@ -11,6 +12,11 @@
 #include <XCEngine/Core/LayerStack.h>
 
 namespace XCEngine {
+namespace RHI {
+class RHIDevice;
+class RHISwapChain;
+} // namespace RHI
+
 namespace Editor {
 
 class EditorLayer;
@@ -26,6 +32,9 @@ public:
     void OnResize(int width, int height);
     bool SwitchProject(const std::string& projectPath);
     void SaveProjectState();
+    Rendering::RenderContext GetMainRenderContext() const { return m_windowRenderer.GetRenderContext(); }
+    RHI::RHIDevice* GetMainRHIDevice() const { return m_windowRenderer.GetRHIDevice(); }
+    RHI::RHISwapChain* GetMainSwapChain() const { return m_windowRenderer.GetSwapChain(); }
     bool IsRenderReady() const { return m_renderReady; }
     HWND GetWindowHandle() const { return m_hwnd; }