Unreal Engine Issues
Unreal Engine Issues
High Virtual Texture Sample/Lookup Cost when using a Virtual Texture in a Material Layer Blend
UE - Rendering - Architecture - Materials - Mar 14, 2025Some Material Attribute blends in Material Layer Blends can cause Virtual Texture samples to be duplicated in HLSL. This can be avoided by sampling the Virtual Texture in the Parent Material, and pa ...
Navmesh does not update properly on loaded BSP
UE - AI - Oct 20, 2014If a user removes a wall or box from the top down project base level, the navmesh will not update appropriately, creating a wall that the user will not be able to pass on PIE. Additional Note: Thi ...
Rotating a button in UMG and moving it to the edge of the canvas causing incorrect clipping
UE - Editor - UI Systems - Oct 27, 2014When rotating a button in the UMG blueprints and then moving through the edge of the canvas panel it causing the button to clip as though it was never rotated. Update: This also happens when placi ...
Artefacts with Volumetric Clouds
UE - Rendering - Features - Nov 2, 2022(Enduring Games) Please see UDN - Case includes project and potential fix from customer. Need to verify that it does not affect other parts of the volumetric composition. bHasValidSamples is the sam ...
Dialog Windows Still Displayed when Editor is Minimized on Macs
UE - Platform - Apple - Jun 25, 2015There are some dialog windows that will render on top of other external applications when the editor is minimized and does not have focus.....i.e. 'Building Lighting' and 'Auto-Save' dialog windows. ...
Z order in based on the position in the Hierarchy is reversed in 4.9
UE - Editor - UI Systems - Oct 13, 2015The Z order that is given to a widget based on it's position in the Hierarchy panel in 4.9 goes from bottom of the hierarchy to the top (The bottom widget is the front most widget) instead of the to ...
XAudio2 DestroyVoice call causes significant hitching on some architectures
UE - Audio - Aug 10, 2015Another thread: https://answers.unrealengine.com/questions/241358/amd-cpu-very-low-performance-because-ixaudio2sourc.html Note: This not a regression and has existed since our first implementation ...
Dismissing "Place phone into daydream headset" leaves app at black screen
UE - Platform - XR - Jun 29, 2017Currently experiencing an issue when re-entering Google Daydream game after exiting the Daydream setup (place your phone in headset) screen by pressing the x in the top left corner of the screen. Wh ...
Physics actor with physics toggled will fall through static meshes set to Movable
UE - Gameplay - Jul 20, 2016Physics actor with physics toggled will fall through static meshes set to Movable User Description: Basically, what this project does is enable simulate physics on the black cube in the middle, th ...
Texture Artifacts on Cubemaps using Default Compression when Packaged for ASTC
UE - Platform - Mobile - Oct 26, 2016Cubemaps using Default texture compression (DXT1) and packaged for Android ASTC will render with artifacts on the seams where the DDS cubemap was stitched together. "Cubemaps set to HDR/HDR compre ...