Unreal Engine Issues
Unreal Engine Issues
Physical Material Mask bug found in GetPhysMatIndex, potentially causing issues with lookup.
UE - Simulation - Physics - Dec 2, 2024On line 408 of UPhysicalMaterialMask::GetPhysMatIndex() in PhysicalMaterialMask.cpp, the AdjustCoord() function is given AddressX for both the U and V coordinates. The AddressY input is never used i ...
Some instances spawned by NeagaraDataInterfaceChaosDestruction breaking event will be set location to the world origin
UE - Niagara - Data Interface - Nov 29, 2024The following code can often be found in UNiagaraDataInterfaceChaosDestruction.const int32 ParticleID = ParticleIDParam.GetAndAdvance() - LastSpawnedPointID + 1; The LastSpawnedPointID is usual ...
GeometryCollectionActor SetSimulatePhysics false does not stop Physics Simulation
UE - Simulation - Physics - Nov 28, 2024If the GeometryCollectionActor (GCA) is simulating physics, calling SetSimulatePhysics(false) does not stop the simulation. If the simulation is paused, calling SetSimulatePhysics(true) does as expe ...
Nanite Mesh Reduction Issue
UE - Graphics Features - Nanite - Nov 28, 2024This issue was reported through a UDN. Licensee mentioned that they are seeing a hole in their Nanite mesh at as they move away from it. Using the Nanite debug view we observe at a certain distance ...
The ResavePackages commandlet with -ResaveClass and -IncludeChildClasses doesn't resave unloaded assets
UE - World Creation - Worldbuilding Tools - Nov 28, 2024The ResavePackages commandlet can be used to batch resave assets. The ResaveClass and IncludeChildClasses options let one resave all assets of a specific parent class. The problem is that blueprint ...
During blueprint reparenting SimpleConstructionScript subobject unmodified values are retained as modified values
UE - Framework - Blueprint Editor - Nov 27, 2024When reparenting blueprints and both the old and new parent blueprint contain a subobject but with different values on it, the reparented blueprint doesn't correctly inherit values from the new pare ...
The ChaosCacheManager changes the bSimulatePhysics flag from the ObservedComponents and, if deleted, the change will persist, what can lead to confusion as observed physical entities will inadvertently stop simulating physics
UE - Simulation - Physics - Nov 26, 2024The ChaosCacheManager (CCM) changes the bSimulatePhysics flag from the ObservedComponents and, if deleted, the change will persist, what can lead to confusion as observed physical entities will inad ...
Landscape / Volume Culling option doesn't work on Simplified HLODs
UE - World Creation - Worldbuilding Tools - HLOD - Nov 26, 2024There are options on both landscapes and HLOD layers that when enabled, performs the culling of invisible HLOD vertices (parts of HLOD meshes ending up below the terrain). The option works fine w ...
Updating Material does not update platform stats in derived Instance
UE - Rendering Architecture - Materials - Nov 26, 2024It would seem that updating a material does not update the associated platform stats in a material instance editor, only the parameters. Can workaround by manually invoking shader compile in the ma ...
Editor Performance issue : Loading/unloading multiple Levels / Level Instances triggers each time a call to FActorFolders::RebuildFolderListForWorld
UE - World Creation - Worldbuilding Tools - Level Instances - Nov 25, 2024Revisit how FActorFolders are updated when loading/unloading Levels (level instances). The code should maintain the folder list instead of rebuilding everything. ...