Unreal Engine Issues
Unreal Engine Issues
Logging out and then logging in as a new user results in slate creating multiple Slate User IDs
UE - Gameplay - Input - Jul 28, 2023I believe this is happening because when you change your logged in user, the Slate Application will automatically create a new second slate user with an ID of 2. This is bad because the Slate App is ...
Inaccurate motion vectors when using different position binding in renderer
UE - Niagara - Rendering - Jul 27, 2023Even though the particles are not moving, and the velocity is zero, the output motion vectors are non-zero. This seems to only happen if using two sources of particle positions. ...
BP property initialization fast path does not handle non-instanced properties assigned to default subobjects correctly
UE - Framework - Blueprint - Jul 27, 2023Non-instanced object ref properties are incorrectly being skipped at property initialization time when Blueprint class instances are spawned with the fast property initialization path enabled. This ...
NiagaraComponent attached to the character won't stay active when travelling to a new level using seamless travel
UE - Niagara - Jul 27, 2023The pawn character is added to APlayerController::GetSeamlessTravelActorList, so it'll be persisted during server travel. The Niagara component is spawned during BeginPlay and activated manually. W ...
WorldPartitionRenameDuplicateBuilder rename breaks soft object refs
UE - World Creation - Worldbuilding Tools - World Partition - Jul 26, 2023Renaming map using builder will break soft obj refs and warnings will also appear in the log: Warning: Serialized Class /Script/Engine.World for a property of Class /Script/Engine.Actor. Reference ...
Virtual Heightfield Mesh crash using released Vertex Factory
UE - Rendering Architecture - Jul 25, 2023When using VirtualHeightfieldMesh we see intermittent crashes in FDepthPassMeshProcessor::TryAddMeshBatch(). This can happen when FVirtualTextureProducerCollection::CallPendingCallbacks() is called ...
Console history in packaged game is not saved
UE - CoreTech - Jul 25, 2023Console history is saved correctly in 5.1. The cause is input.ini in EnhancedInput and InputDebugging added in 5.2. Removing these files are a work around. ...
FMaterialResource::IsDualBlendingEnabled bug
UE - Rendering Architecture - Materials - Jul 24, 2023The user has a proposed fix for this in the case. FMaterialResource::IsDualBlendingEnabled needs the following modification that includes MaterialInstance check: bool bMaterialRequestsDualSourceBle ...
Cull Distance Volumes don't work with WP
UE - World Creation - Worldbuilding Tools - World Partition - Jul 19, 2023When breaking a level instance, foliage instances in the LevelInstance are placed in the wrong location
UE - World Creation - Worldbuilding Tools - Level Instances - Jul 8, 2023Following code works as a work around. The code updates placement information of instances. TMap<UFoliageType*, TArray<const FFoliageInstancePlacementInfo*>> AInstancedFoliageActor::GetInstancesF ...