Unreal Engine Issues
Unreal Engine Issues
AfterMotionBlur Translucent Material With Local Exposure Enabled Causing Artifacts
UE - Graphics Features - Feb 20, 2025When TSR is enabled, translucent materials using the AfterMotionBlur translucency pass cause visual artifacts when local exposure is active. The artifacting is believed to occur because the local ex ...
Groom Hair Visual Issue with RBF Interpolation Enabled
UE - Graphics Features - Feb 19, 2025When "RBF Interpolation" is enabled in the Groom settings, applying an Animation Sequence to a Skeletal Mesh that animates at a position far from the world origin causes the bound Groom shape to bec ...
Changing the “DistanceField Trace Distance” requires rebuilding the lightmaps
UE - Graphics Features - Feb 18, 2025Changing the “DistanceField Trace Distance” requires rebuilding the lightmaps even though the valu never affect light baking process in Lightmass. ...
Wrong motion vectors with Nanite ISM when using ActorPosition material node
UE - Graphics Features - Feb 17, 2025Here is the file for the repro project in Google Docs, due to the file size limit: [Link Removed] ...
VolumetricCloud crashes in orthographic view
UE - Graphics Features - Feb 17, 2025FVolumetricRenderTargetViewStateData structure for the orthographic view is not initialized and the structure has some uninitialized member variables. If uninitialized FVolumetricRenderTargetViewSta ...
Cards for a Groom asset do not update normals during simulation
UE - Graphics Features - Feb 13, 2025When a groom is allowed to simulate, only the strand representation computes correct world normals for the new hair strand positions. This is especially noticeable when the groom is inverted as grav ...
Ambient occlusion causing ghosting for animations when viewport is resized on DX11
UE - Graphics Features - Feb 10, 2025Tested regression against //UE5/Release-5.4 @ CL35576357 and the issue did not occur. This is a confirmed regression.[Image Removed] Jira Bot attaches conversation thread from Slack [Image Removed]D ...
Translucent materials in the PostMotionBlur pass can cause a flickering viewport artefact when using TAA
UE - Graphics Features - Feb 5, 2025There appears to be a bug relating to rendering multiple windows that can trigger under unknown circumstances. It has been reported on rectangle lights in the forums and on PostMotionBlur materials ...
Temporal Super Sampling flickering temporal analysis visualisation mode indicates temporal analysis disabled for all objects on screen
UE - Graphics Features - Jan 24, 2025This can also be observed while running in PIE mode using the console command "r.TSR.Visualize -2". It is not clear whether it is only the TSR flickering temporal analysis visualization that is exh ...
World Position Offset Object Shadow Cast on Translucent Object Causes Flickering
UE - Graphics Features - Jan 21, 2025When a WPO (World Position Offset) object casts a shadow on a translucent object, the translucent object flickers continuously as the shadow passes over it. Initially logged as a 5.5/5.5.1 but also ...