Unreal Engine Issues
Unreal Engine Issues
Expanding a macro with split struct pins causes internal compile errors
UE - Gameplay - Blueprint - Jul 27, 2017Expanding a macro that passes a struct with split struct pins to a function causes internal compile errors. Attaching sample project, can be recreated with steps above. ...
Subsurface Scattering Checkerboard with SceneColourFormat 3 (High Scalability) leads to a visual artefact when temporal upscaling is in use
UE - Graphics Features - Sep 30, 2024Primarily visible at very low internal resolutions (25-33%), the SSS checkerboard with an RGB scene colour format (r.SceneColorFormat 3) causes a double-image artefact both internally and on the sil ...
Crash on applying animation modifier for some assets
OLD - Anim - Oct 29, 2019When removing curves on some assets, a crash can occur. This seems to be due to const FSmartNameMapping* CurveMapping being null and dereferenced within UAnimationBlueprintLibrary::RetrieveContainer ...
Zero Length Raycasts/Sweeps not returning hits
UE - Simulation - Physics - Apr 11, 2019Sweeps/Raycasts do not return hits for zero length queries. This is a regression from 4.21, where zero length Sweeps/Raycasts correctly returned hits. ...
DrawBoxSweeps does not fully account for rotation
UE - Simulation - Physics - Apr 3, 2019DrawBoxSweeps does not account for box rotation when drawing lines between swept vertices, leading to disconnected debug visuals. ...
STAT GPU console command makes the editor unresponsive
UE - Foundation - Core - Mar 30, 2018Running the stat GPU command causes the editor to hitch for a period of time. ...
Throbber widget could eat up all of your RAM
UE - Editor - UI Systems - Jan 22, 2015A user has reported that they could BSOD (Blue Screen Of Death) their computer by putting in 999999999999 as the number of pieces for the throbber widget. While I was unable to produce this on our s ...
FSkeletalMeshMerge::CalculateLodCount calculates minimum LODs improperly
UE - Gameplay - Aug 23, 2016CalculateLodCount tries to bound the output LOD count as at least one (count >= 1), but actually bounds it as no more than 1 (count <= 1). Just need to change a FMath::Min to FMath::Max. ...
Deferred movement updates don't respect the bTeleport flags
UE - Simulation - Physics - Jun 17, 2015FScopedMovementUpdate needs to be aware of the bTeleport flags used in the MoveComponent call. This could get complex when there is a mix of teleport and non-teleport. ...
FPhysicsInterface_PhysX::LineTrace_Geom fails for welded bodies
UE - Simulation - Physics - Aug 2, 2019FPhysicsInterface_PhysX::LineTrace_Geom does not properly respond to welded child bodies. ...