Unreal Engine Issues
Unreal Engine Issues
WasRecentlyRendered() and GetLastRenderTimeOnScreen() still triggers when a skeletal mesh re-enters the view frustum despite being occluded.
UE - Rendering Architecture - Dec 4, 2024AActor::WasRecentlyRendered() and UPrimitiveComponent::GetLastRenderTimeOnScreen() both still trigger when a skeletal mesh (occluded behind a wall) re-enters the player's view frustum after being ou ...
Enabling "ShowFlag.PhysicalMaterialMasks" causes editor crash when physical material masks aren't yet imported.
UE - Simulation - Physics - Dec 3, 2024When there is a physical material mask asset that has been created and applied to a mesh in the level without having a texture source imported yet, and then "ShowFlag.PhysicalMaterialMasks" is enabl ...
FRenderThreadCommandPipe::EnqueueAndLaunch does not properly capture/reapply LLM Context in all situations
UE - Rendering Architecture - RHI - Dec 3, 2024When multiple render commands are enqueued before the graph task runs for a prior enqueued command, the new commands will be put into the Queue for the task to run and no context is captured. When t ...
Crash can happen in FDetailLayoutBuilderImpl::Tick() when a category of UStruct member includes the "|" symbol and member is Tickable.
UE - Editor - Workflow Systems - Dec 3, 2024A crash can occur when a member of a UStruct has a category with the "|" symbol and is trying to be displayed inside by the FDetailLayoutBuilderImpl class. This happens when there is a UStruct memb ...
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 ...
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 ...
Large World Coordinates appears to not work for Niagara Mesh Particles
UE - Graphics Features - Nov 28, 2024When a Niagara System is placed at around 10^8 units away from the origin, the movements of the mesh particles aren't smooth as expected, but jumpy. These particles behave as if they are using a flo ...
The visibility state of on-screen stat messages is not restored correctly after entering and leaving PIE. This also affects other important on-screen messages like map warnings and debug messages.
UE - Editor - UI Systems - Nov 28, 2024Currently, the ShowStats viewport option is automatically enabled when entering PIE and automatically disabled when exiting PIE. This forced disabling happens even if the option was enabled prior to ...
CharacterMovementComponent: NavWalking with high value for NavWalkingFloorDistTolerance can causes character meshes to be teleported up/down when crouching/uncrouching
UE - AI - Navigation - Nov 27, 2024Context CharacterMovementComponent can be set in the NavWalking mode so that on the server the characters move using the navigation mesh as floor. This helps performance when the nav mesh is more c ...