BinnedMalloc and BinnedMalloc2 performance on Linux is not good

UE - Foundation - Core - Jun 8, 2017

This test took 13 seconds using Binned2 and 10 seconds using Binned1. It took 0.06 seconds using jemalloc ...

VisionOS deferred renderer regression

UE - Platform - XR - Sep 11, 2024

Deferred desktop renderer does not function correctly on visionOS.  It did work in 5.4.  One problem is the r.XRMSAAMode setting forcing 4 samples even when not using msaa, but there are other probl ...

Converted 4.7.2 project crashes on open after successful recompile

UE - Gameplay - Blueprint - Mar 13, 2015

User's Project is crashing since converting to 4.7.2. I have attached the project itself below, but after conversations with the user and seeing pieces of the project, this issue may be related to ...

Rendering glitch when launching on Android

UE - Platform - Mobile - Aug 2, 2016

https://answers.unrealengine.com/questions/462957/rendering-glitch-when-launching-on-android-ue413-p.html I was able to repro it on Nexus5 with Android 5.1.1. ...

SunTemple fails to open on some Android devices.

UE - Platform - Mobile - Jan 16, 2017

This is occurring on device 2888_KindleFireHD8.9" This is a regression from 4.14 ...

ParticlePosition doesn't use Previous values

UE - Niagara - Jan 9, 2024

FHLSLMaterialTranslator::ParticlePosition does not return Previous information when request which can result in bad motion vector calculation. ...

Roughness/Reflectivity difference between eyes on OSVR

UE - Platform - XR - May 6, 2016

Found on: //UE4/Dev-VR CL-2967563 The displays in QA-PostProcessing are rendering differently in each eye on the OSVR, it looks like one is more reflective (or perhaps less rough?) than the other. ...

Buffer Visualization for DecalMask is missing

UE - Graphics Features - Feb 29, 2016

The Buffer Visualization for DecalMask is no longer an option. Also, when looking at the Buffer Visualization Overview the DecalMask slot has been removed. See attached image for comparison Worke ...

Utility functions in UEdGraph_ReferenceViewer are no longer exposed

UE - Editor - Content Pipeline - Content Browser - Oct 29, 2018

A number of utility functions are provided in UEdGraph_ReferenceViewer for building menu extenders. This class was originally included in the engine as part of the ReferenceViewer module, but was re ...

Visual Studio outputs ? symbols in place of Cyrillic for some messages related to UBT when compiling engine source

UE - Foundation - Cpp Tools - UnrealBuildTool - Apr 25, 2016

An answerhub user reported a problem with compiling source on a Russian version of windows where messages related to UBT will output ? symbols in the place of Cyrillic characters in Visual Studio's ...