避免重复构建DF阴影,并且只在需要时保留网格的顶点数据

Plugins/MeshUtilities2/Source/MeshUtilities2/Private/DistanceFieldAtlas2.cpp

@@ -57,6 +57,9 @@ static FAutoConsoleVariableRef CVarAOAsyncBuildQueue(
 //构建距离场
 void BuildMeshDistanceField(UStaticMesh* StaticMesh)
 {
+	GDistanceFieldAsyncQueue2->CancelBuild(StaticMesh);
+	GCardRepresentationAsyncQueue2->CancelBuild(StaticMesh);
+
 	//ref:StaticMesh.cpp 2782
 	auto RenderData = StaticMesh->GetRenderData();
 	if (RenderData->LODResources.IsValidIndex(0))

Plugins/RuntimeGeometryUtils/Source/RuntimeGeometryUtils/Private/MeshComponentRuntimeUtils.cpp

@@ -29,7 +29,7 @@ void RTGUtils::UpdateStaticMeshFromDynamicMesh(
 
 	UStaticMesh::FBuildMeshDescriptionsParams Params;
 	Params.bFastBuild = true;
-	StaticMesh->BuildFromMeshDescriptions(MeshDescriptionPtrs,Params);
+	StaticMesh->BuildFromMeshDescriptions(MeshDescriptionPtrs, Params, true);
 
 	//在编辑器模式下,也使用自定义的距离场构建和MeshCard构建
 	BuildMeshDistanceField(StaticMesh);