Duplicated TextureLoadVirtualPageTable in GetCustomData functions in generated HLSL add to the total instruction count due to TextureLoad having side effects

UE - Rendering - Architecture - Materials - Dec 4, 2024

When using materials with CustomData inputs, such as the Eye material with Iris Distance and Mask, Virtual Texture samples will increase the instruction count for each unique VTPageResult. Each cus ...

UE4Editor does not start when there are no audio devices available

UE - Platform - Linux - Sep 26, 2018

UE4Editor does not open when there are no audio input or output devices available. The editor hangs at 83% after it initializes the AudioMixer. This issue looks like it was caused by CL 4396954. Et ...

Keyboard Shortcuts for Blueprint Editor Do Not Appear until Opening Blueprint

Tools - Feb 11, 2015

In any newly opened project the 'Keyboard Shortcuts' within the 'Editor Preferences' for the 'Blueprint Editor' do not appear until you have opened a blueprint within the project. After closing and ...

Mouse cursor will not change unless a mouse button is being held down.

Tools - Dec 5, 2014

Changing the mouse cursor depending on what it is currently over only happens if a mouse button is also being held down. This worked normally in version 4.5.1 WORKAROUND: In UGameViewportClient::Ge ...

Fixing up GoogleVRHMD static analysis warning

UE - Platform - XR - Oct 31, 2016

[Line 1585] d:​\build​++ue4+release-4.14+compile​\sync​\engine​\plugins​\runtime​\googlevr​\googlevrhmd​\source​\googlevrhmd​\private​\googlevrhmdrender.cpp(42) : warning C6386: Buffer overrun while ...

[CrashReport] UE4Editor_UnrealEd!UnFbx::FFbxImporter::RecursiveBuildSkeleton()

UE - Editor - Content Pipeline - Import and Export - Jul 30, 2015

This is a common crash affecting users. User DescriptionsJust import a Mesh of Fuse Source Context 624 void UnFbx::FFbxImporter::RecursiveBuildSkeleton(FbxNode* Link, TArray<FbxNode*>& Out ...

[CrashReport] UE4Editor_Sequencer!FSequencer::NotifyMovieSceneDataChanged()

UE - Anim - Sequencer - Jul 24, 2017

This is a common crash affecting users in 4.16 and into the 4.17 Preview. User Descriptionscopying-pasting curves in Sequencer Source Context 979 void FSequencer::NotifyMovieSceneDataCha ...

Mouse cursor does not disappear when widget has focus

UE - Editor - UI Systems - Nov 20, 2017

THere is an issue with the Mouse cursor when using UMG with the set show mouse cursor option. after setting the set show mouse cursor off pressing a widget and giving it focus causes the mouse curso ...

Blueprint Function Reorder displays error tooltip when trying to reorder functions

UE - Gameplay - Blueprint Editor - Dec 7, 2017

There is an issue when attempting to reorder blueprints where Blueprint Function Reorder displays error tooltip when trying to reorder functions. In previous engine versions, functions could not be ...

"Support Compute Skincache" throws an Assert for games on Linux

UE - Graphics Features - Apr 16, 2019

After enabling "Support Compute Skincache" in the project settings and packaging a game on Linux, the packaged game will throw an assert. Any setting that turns "Support Compute Skincache" on automa ...