Metal - Support 32bit index buffers

UE - Graphics Features - Apr 3, 2015

Metal is not taking the non-uniform buffer path for GPU skinning. ...

FMonitoredProcess does not properly support -nothreading mode

UE - Foundation - Core - Jan 19, 2017

For single threaded mode, we need to update FMonitoredProcess to handle processing in a single threaded fashion. Currently, we are continuing before the process has completed, which could result in ...

SkelMeshMerge not working for meshes with >1 LOD

OLD - Anim - May 31, 2018

Reported on UDN (see Additional Info URL). Looking at code, we call USkeletalMesh::AllocateResourceForRendering for every LOD, but we should only call it once. Need to check if our SkelMeshMerge t ...

APlayerController::IsPlayerMuted no longer supported on clients

UE - Online - Nov 9, 2022

Recent changes to the player controller's mute functions have resulted in the MuteList not being updated on clients, and instead APlayerController::ClientMutePlayer now just directly calls MuteRemot ...

Volume material doesn't support EyeAdaptation node

UE - Niagara - Rendering - Sep 2, 2024

FBX exporter does not support Level instances

UE - Editor - Content Pipeline - FBX - Sep 30, 2024

StaticMeshActor loses root component scale if placed with Surface Snapping enabled in Editor Viewport

Tools - Oct 21, 2019

If you make a Blueprint child of StaticMeshActor, and set the default scale of the Root Component (Static Mesh Component) to something other than 1,1,1, the scale will not be applied when the actor ...

tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out

UE - Platform - Mobile - Jan 22, 2019

When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...

Render target size mistmatch in ShaderDrawDebug

UE - Graphics Features - Jun 9, 2020

We found a d3d debug validation assert in RDG_EVENT_NAME("ShaderDrawDebug"), with the full DLSS integration. It however also reproduces in  (4.25.1-release, dev-rendering and the plugin branch with ...

VolumetricCloud crashes in orthographic view

UE - Graphics Features - Feb 17, 2025

FVolumetricRenderTargetViewStateData structure for the orthographic view is not initialized and the structure has some uninitialized member variables. If uninitialized FVolumetricRenderTargetViewSta ...