feat: add editor viewport host service

editor/src/Platform/D3D12WindowRenderer.h

@@ -16,6 +16,7 @@
 #include <XCEngine/RHI/D3D12/D3D12SwapChain.h>
 
 #include <d3d12.h>
+#include <functional>
 #include <vector>
 #include <windows.h>
 
@@ -154,7 +155,10 @@ public:
         RecreateBackBufferViews();
     }
 
-    void Render(UI::ImGuiBackendBridge& imguiBackend, const float clearColor[4]) {
+    void Render(
+        UI::ImGuiBackendBridge& imguiBackend,
+        const float clearColor[4],
+        const std::function<void(const Rendering::RenderContext&)>& beforeUiRender = {}) {
         auto* d3d12Queue = GetD3D12CommandQueue();
         auto* d3d12CommandList = GetD3D12CommandList();
         if (m_swapChain == nullptr ||
@@ -167,6 +171,10 @@ public:
         d3d12Queue->WaitForPreviousFrame();
         m_commandList->Reset();
 
+        if (beforeUiRender) {
+            beforeUiRender(GetRenderContext());
+        }
+
         const uint32_t backBufferIndex = m_swapChain->GetCurrentBackBufferIndex();
         if (backBufferIndex >= m_backBufferViews.size() || m_backBufferViews[backBufferIndex] == nullptr) {
             return;