Unreal Engine Issues
Unreal Engine Issues
Lack of multi-bounce when using software traced lumen radiosity
UE - Graphics Features - Lumen - Apr 4, 2025Certain Lumen Hardware Ray Tracing CVars, when disabled in isolation, will not fall back to tracing the Global Distance Field, because the Global Distance Field is still disabled. The function "Lum ...
Simulate Physics with Destructible that is using World Support can't be enabled after it's been hit.
UE - Simulation - Physics - Destruction - Apr 22, 2015When using a Destructible with World Support set simulate physics can be enabled so long as the DM has not been hit yet. Once it's been hit it no long is able to be set to simulate. ...
Camera behavior mismatch between PIE vs Packaged game
UE - Gameplay - Feb 19, 2015When a camera is setup in code with GetWorld()->GetFirstPlayerController()->SetViewTarget(this); the camera will work in the editor but a packaged version of the game has a black screen. ...
Cannot paint landscape layers onto tiled landscapes
UE - LD & Modeling - Terrain - Landscape - Jun 30, 2015paint layers do not take effect on all tiled layers that have a material incorporated if a user attempts to paint on them from the persistent level. ...
Setting linear dampening during runtime via the event graph does not work for separated chunks
UE - Simulation - Physics - Destruction - Dec 18, 2014DESCRIPTION: When using a DM in blueprints and setting the linear dampening in the event graph the DM will honor the linear dampening but the chunks as they break off will not. Setting the mesh to ...
Extremely long Spline Point will cause the editor to lose FPS
Tools - Nov 13, 2015Extremely long Spline Point will cause the editor to lose FPS and crash some machines User Description: A couple of times I've accidentally scaled a spline node to be huge, causing the spline to ...
UDIM textures have default Tiling Method set to Wrap but causes incorrect filtering on edges.
UE - World Creation - Worldbuilding Tools - World Composition - Mar 6, 2020UDIM textures have default Tiling Method set to Wrap but causes incorrect filtering on edges. It should be set to Clamp or Mirror by default. ...
BP with Show 3D Widget enabled does not display the correct vector values in the bp editor
UE - Gameplay - Blueprint - Apr 7, 2015BP with Show 3D Widget enabled does not display the correct vector values in the bp editor. Note: If you don't see a difference at first, delete the bp in the level and place it again. The widge ...
Blueprint parameter of a function call will break on reload of the editor
UE - Gameplay - Blueprint - Jun 8, 2015When using a code created function call inside of a blueprint that takes in a pointer to a UBlueprint as a paramter the pin for setting the desired blueprint will cause a compile error when the edit ...
Changing screen percentage while in VR Preview will change screen coords for post process shaders
UE - Platform - XR - Jan 30, 2015If a post process volume is set to use a material shader, reducing the screen percentage while in VR Preview will shift the coordinates left/right. ...