Unreal Engine Issues
Unreal Engine Issues
Light Function Material with Volumetric Fog Causes Screen-Space Banding
UE - Graphics Features - Jul 12, 2018With a light function being used on a light and volumetric fog enabled if you move the camera around it will cause screen-space banding at the edges of the screen. Found in 4.19 CL# 4033788, 4.20 P ...
Light Function Materials containing a Texture Sample and Rotator nodes will fail RHI Validation
UE - Rendering - Architecture - RHI - Jan 12, 2026Using a Light Function Material that contains a Texture Sample and Rotator nodes will cause RHI Validation to fail with the following error: LogOutputDevice: Error: Ensure condition failed: Bindings ...
Particle Lights do not honor Lighting Channel assignments
UE - Niagara - Jul 15, 2016Particle system light's module does not use Lighting Channels. The particle system itself will accept lighting from it's assigned lighting channels but the lights spawned from the particle system, n ...
Lighting still unbuilt in Content Examples Lighting map after building lighting and saving
UE - Graphics Features - Aug 28, 2016Lighting needs to be rebuilt in Content Examples Lighting level every time the editor is reopened. If the user builds lighting, saves the level, closes the editor, then reopens the level, lighting ...
Point lights affect indirect lighting on RTGI much less than other types of lights
UE - Graphics Features - Lumen - Aug 4, 2020Only point lights affect indirect lighting on RTGI much less than other types of lights.[Link Removed] Indirect lighting of baked lightmaps look much stronger than RTGI.[Link Removed] Apparently, ...
A function in a Blueprint Function Library that references another function in that library cannot be saved after closing and reopening the project
UE - Gameplay - Blueprint - Mar 1, 2015A function in a Blueprint Function Library that references another function in that library cannot be saved after closing and reopening the project. The library will save without error until the pro ...
Expand Node on a Function node deletes the Function node
UE - Gameplay - Blueprint - Mar 13, 2015Expand Node on a Function node deletes the Function node. If the Function node is part of a group of nodes collapsed into a function, expanding that new function node will return all nodes except th ...
Movie Render Queue Deferred Lighting(Detail Lighting) only outputs Lighting Only
UE - Anim - Sequencer - MRQ - Jun 29, 2022This is not a regression. Tested in //UE4/Release-4.27 CL#18319896 Movie Render Queue Deferred Lighting(Detail Lighting) appears to only output Lighting Only. ...
Light Source Angle Input disabled when switching to static light on directional lights
UE - Graphics Features - Jan 14, 2015If the directional light is switched from stationary to static, the Light Source Angle Input option is disabled in the details pane. ...
Including "meta = (WorldContext = "WorldContextObject")" as a specifier in a Blueprint Function Library results in the function not being available in Object Blueprints if a parameter passed into the function is a UObject named WorldContextObject
UE - Gameplay - Blueprint - May 15, 2015If a function in a custom code Blueprint Function Library class contains meta = (WorldContext = "WorldContextObject") as a specifier, that function does not appear in context searches in a UObject B ...