Unreal Engine Issues
Unreal Engine Issues
Masked TwoSided material causing lumen direct lighting to leak through walls
UE - Graphics Features - Lumen - Apr 23, 2024It appears that LumenScene's Hardware Ray Tracing is causing light leaking into a sealed room (which should be perfectly black). This bug does not appear to happen on AMD GPUs. ...
AnimNotifies get reproduced more times than expected.
UE - Anim - Sep 3, 2024When setting an AnimNotify to an AnimationSequence, this AnimNotify can be triggered multiple times when only set once. This issue only happens when the mentioned AnimationSequence that contains the ...
High Virtual Texture Sample/Lookup Cost when using a Virtual Texture in a Material Layer Blend
UE - Rendering Architecture - Materials - Mar 14, 2025Some Material Attribute blends in Material Layer Blends can cause Virtual Texture samples to be duplicated in HLSL. This can be avoided by sampling the Virtual Texture in the Parent Material, and pa ...
Audio Components ignoring Start Time set by Play node on Android
UE - Audio - Jul 15, 2015Setting the start time within the Play node for an audio component does not function when deploying to Android. The set up works fine when playing on the PC, and the sound functions on the Android ...
Building Lighting will Generate Additional Lightmaps after Rotating Lightsource
UE - Graphics Features - Jul 7, 2015Lightmap sizes seem inconsistent after rotating a light source and rebuilding the lighting. This causes concern about file sizes when packaging the project that is using baked static lighting. The ...
Creating an exposed variable does not always update correctly to the bp's Details panel
UE - Gameplay - Blueprint - Feb 20, 2015Creating an exposed variable does not always update correctly to the bp's Details panel. They will show as having multiple values until the bp is clicked off and back onto. ...
PhysX generates extra "sleep" event when moving Kinematic actors away from Simulated actors with Teleport option.
UE - Simulation - Physics - Aug 4, 2016Issue seems to be related to NpRigidDynamic::setKinematicTarget. When called by itself (like in the case of Kinematic bodies moved without teleportation), the simulated actor is woken and is put ba ...
Cannot save actor after actor component modification, Graph is linked to private object(s) in an external package
UE - Gameplay - Blueprint - Sep 28, 2016Cannot save actor after actor component modification. The user gets the error Graph is linked to private object(s) in an external package ...
Orthographic Camera view doesn't work with movable directional light shadows and partly with stationary shadows
UE - Graphics Features - Feb 26, 2015See attached video for clear examples. When using the orthographic camera perspective with default light settings to stationary for directional light source. Other light sources work as intended. T ...