internal static bool MergeLodMesh(this MyMergedLodMeshId mergedLodMesh, LodMeshId lodMesh) { var pendingLodMeshes = mergedLodMesh.Info.PendingLodMeshes; var mergedLodMeshes = mergedLodMesh.Info.MergedLodMeshes; bool alreadyMerged = mergedLodMeshes.Contains(lodMesh); if (alreadyMerged) { pendingLodMeshes.UnionWith(mergedLodMeshes); mergedLodMeshes.Clear(); } else { pendingLodMeshes.Add(lodMesh); } MyMeshes.LinkLodMeshToMerged(lodMesh, mergedLodMesh); return(alreadyMerged); }