Unreal Engine Issues
Unreal Engine Issues
Using a Dynamic Material Instance on a Nanite Landscape doesn't work
UE - Graphics Tools - Terrain - Landscape - Oct 30, 2023Nanite and mobile landscape don't have support for dynamic materials
UE - Graphics Tools - Terrain - Landscape - Oct 26, 2023On a landscape actor with Nanite landscape enabled, set the bUseDynamicMaterialInstance property on a landscape proxy and setup a BP to call SetLandscapeMaterialTextureParameterValue / SetLandscape ...
Lumen artifacts on splitscreen during camera cuts
UE - Graphics Features - Lumen - Apr 18, 2024A UDN licensee has pointed out that they are seeing unresolved Lumen reflection artifacts when they are running their game in split-screen mode. A video of this behavior is found in the Related tab ...
Generate Lightmap UVS Doesn't Update the Lightmap Coordinate Index
Tools - Jul 23, 2018When importing an fbx file and using 'generate lightmap uvs', the light map coordinate index will not update correctly. Working properly in 4.19 CL# 4033788 Found in 4.20 CL# 4212847 and 4.21 CL# ...
Number containers do not correctly parse equations
Tools - Jul 30, 2020In C++, arithmetic operators * and / have the same priority and therefore should be resolved left to right. In this case, * is being resolved first and / second. 1/128*128 and (1/128)*128 should p ...
Ray tracing in sequencer causing AO ghosting
UE - Graphics Features - Jul 12, 2021Crash in FPBDJointUtilities::ConditionInverseMassAndInertia
UE - Simulation - Physics - Solver - Aug 8, 2024We seem to be setting the InverseInertia to zero, even though the InverseMass is non-zero. FPBDJointUtilities::ConditionInverseMassAndInertia assumes that the inverse inertia is only zero if the in ...
Modifying PostProcess Film Slope can cause TSR to produce ghosting artefacts
UE - Graphics Features - Aug 11, 2025When TSR is active, the scene is dark, and a foreground object is lit, modifying the Film/Slope value on a PostProcessVolume can lead to TSR ghosting. TSR occurs prior to Tonemapping, so the issue ...
German keyboard layout does not recognize the keys ö,ü,^ in editor
Tools - May 12, 2015ö,ü,^ keys are not recognized on keyboards with a german QWERTZ layout in editor. ...
Pose assets do not snap to the pose when Additive is disabled
OLD - Anim - Oct 24, 2016This is a regression from 4.13.1 as it was snapping to the pose then. If this was an intentional change please let us know and we can update the test case to reflect this. ...