Lighting channels are not supported with tiled lighting

UE - Graphics Features - Aug 15, 2016

Reported via UDN ...

Clearcoat shader disappears if any asset using the Material leaves lighting

UE - Graphics Features - Aug 19, 2015

Clearcoat Shader will stop receiving lighting information if any mesh assigned the material using the shader leaves lighting. Also Reproduced in Launcher 4.9 Preview 4, Main-CL-2660934 [Image Remo ...

OSVR does not consistently render to HMD if OSVR Server is not open prior to opening editor/cooked game

UE - Platform - XR - May 18, 2016

It seems like if OSVR_Server is not launched prior to opening the editor, vr-preview functionality will not work (even though the editor starts OSVR_Server at launch). Seems like server must be open ...

Composite Textures Normal to Roughness Alpha doesn't generate valid data

Tools - Jun 28, 2018

More infos on https://udn.unrealengine.com/questions/428429/composite-textures-normal-to-roughness-alpha-doesn.html ...

Stop using power of 2 RTs for landscape edit layers

UE - Graphics Tools - Terrain - Landscape - Apr 4, 2023

Result : all the RTs allocated for edit layers (in global merge mode) will be padded to the next power of 2 for no good reason, which can lead to out-of-VRAM (as reported by [Link Removed]) ...

Material with Custom Expression at Vertex Shader Stage Does Not Compile

UE - Graphics Features - Jul 22, 2019

When Custom expression is connected to custom UV then material wont compile. This is working as expected in 4.22 CL# 7053642 Found in 4.23 CL#7321677 and 4.24 CL# 7321677 This is a regression. ...

LiDAR assets do not render in after relaunching the engine

UE - Editor - Content Pipeline - Datasmith - Aug 15, 2023

LiDar point clouds are failing to render when saving and relaunching the project This issue is occurring in //UE5/Release-5.3 @ CL 26560699 This issue is occurring in //UE5/Release-5.3 @ CL 2600198 ...

Graphical issues in editor after changing monitor resolution on Linux

UE - Platform - Linux - Feb 23, 2017

Changing the monitor resolution on Linux causes Editor windows to show graphic errors. ...

Forward Rendering Lightmap Density view flicker

UE - Graphics Features - Aug 20, 2019

The shaders flicker when in Lightmap Density viewmode after enabling Instanced Stereo Rendering in Project Settings > Engine > Rendering > VR  Tested in 4.21.2 (CL - 4753647) 4.22.3 (CL - 7053647), ...