editor: centralize engine runtime access

editor/app/Rendering/Viewport/ViewportHostService.cpp

@@ -1,5 +1,6 @@
 #include "ViewportHostService.h"
 
+#include "Engine/EditorEngineServices.h"
 #include "Panels/EditorPanelIds.h"
 #include "Product/EditorProductManifest.h"
 #include "Viewport/SceneViewportResourcePaths.h"
@@ -41,12 +42,18 @@ private:
 
 } // namespace
 
-ViewportHostService::ViewportHostService() = default;
+ViewportHostService::ViewportHostService(EditorEngineServices* engineServices)
+    : m_engineServices(engineServices) {}
 
 ViewportHostService::~ViewportHostService() = default;
 
-void ViewportHostService::Initialize(const EditorRuntimePaths& runtimePaths) {
-    m_sceneViewportRuntime.Initialize(BuildSceneViewportShaderPaths(runtimePaths));
+void ViewportHostService::Initialize(
+    const EditorRuntimePaths& runtimePaths,
+    EditorEngineServices& engineServices) {
+    m_engineServices = &engineServices;
+    m_sceneViewportRuntime.Initialize(
+        BuildSceneViewportShaderPaths(runtimePaths),
+        engineServices);
     m_placeholderRenderers.clear();
     for (const EditorProductPanelDescriptor& panel : GetEditorProductPanels()) {
         if (panel.presentationKind != UIEditorPanelPresentationKind::ViewportShell) {
@@ -123,6 +130,7 @@ void ViewportHostService::Shutdown() {
     m_windowRenderer = nullptr;
     m_device = nullptr;
     m_surfacePresentationEnabled = false;
+    m_engineServices = nullptr;
     m_entries.clear();
     m_retiredTargetsBySlot.clear();
 }