Updated the SceneProxy to use a new setup path instead of individually queueing sections.

Author: Chris Conway

Source/Private/RuntimeMeshComponent.cpp

@@ -13,6 +13,10 @@ class FRuntimeMeshSceneProxy : public FPrimitiveSceneProxy
 private:
 	TUniformBufferRef<FPrimitiveUniformShaderParameters> MeshUniformBuffer;
 
+	// Temporarily holds all section creation data until this proxy is passsed to the RT.
+	// After this data is applied this array is cleared.
+	TArray<FRuntimeMeshSectionCreateDataInterface*> SectionCreationData;
+
 public:
 
 	FRuntimeMeshSceneProxy(URuntimeMeshComponent* Component)
@@ -37,29 +41,8 @@ class FRuntimeMeshSceneProxy : public FPrimitiveSceneProxy
 
 				// Get the section creation data
 				auto* SectionData = SourceSection->GetSectionCreationData(Material);
-				
-
-				auto Proxy = SectionData->NewProxy;
-
-				if (!IsInRenderingThread())
-				{
-					// Enqueue update on RT
-					ENQUEUE_UNIQUE_RENDER_COMMAND_TWOPARAMETER(
-						FRuntimeMeshCreateSectionInternalCommand,
-						FRuntimeMeshSectionProxyInterface*, Proxy, Proxy,
-						FRuntimeMeshSectionCreateDataInterface*, SectionData, SectionData,
-						{
-							Proxy->FinishCreate_RenderThread(SectionData);
-						}
-					);
-				}
-				else
-				{
-					Proxy->FinishCreate_RenderThread(SectionData);
-				}
-
-				// Save ref to new section
-				Sections[SectionIdx] = Proxy;
+				SectionData->SetTargetSection(SectionIdx);
+				SectionCreationData.Add(SectionData);
 
 			}
 		}
@@ -76,6 +59,18 @@ class FRuntimeMeshSceneProxy : public FPrimitiveSceneProxy
 		}
 	}
 
+	void CreateRenderThreadResources() override
+	{
+		FPrimitiveSceneProxy::CreateRenderThreadResources();
+
+		for (auto Section : SectionCreationData)
+		{
+			CreateSection_RenderThread(Section);
+		}
+		// The individual items are deleted by CreateSection_RenderThread so just clear the array.
+		SectionCreationData.Empty();
+	}
+
 	/** Called on render thread to create a new dynamic section. (Static sections are handled differently) */
 	void CreateSection_RenderThread(FRuntimeMeshSectionCreateDataInterface* SectionData)
 	{