FMassArchetypeData::ExecutionFunctionForChunk crashes on binding shared fragments

UE - AI - Mass - Feb 14, 2023

FMassArchetypeData::ExecutionFunctionForChunk is using wrong mappings while binding shared fragments. It's using RequirementMapping.ChunkFragments while it should use RequirementMapping.ConstSharedF ...

crash from a race condition between interchange worker dispatcher and worker handler

UE - Editor - Content Pipeline - Import and Export - Feb 13, 2023

Atmosphere related scan line artifacts for Path Tracer with MGPU

UE - Graphics Features - Path Tracer - Feb 10, 2023

There are two UDNs related to this issue.  It makes the Path Tracer unusable with MGPU, with atmosphere enabled. I already have a one-line fix implemented and tested.  The atmosphere scan line arti ...

Alpha blending is done twice when using RenderOpacity of RetainerBox's parent slot

UE - Editor - UI Systems - UMG - Feb 10, 2023

Licensee reported that alpha blending is done twice in the code below, and the fix below seems to fix it. .\Engine\Source\Runtime\UMG\Private\Slate\SRetainerWidget.cpp From:const FLinearColor Compu ...

Stencil Test Post Process Breaks in Stereo Rendering

UE - Platform - XR - Feb 9, 2023

[Link Removed] post process material is blacking out our left eye A test project is provided. ...

Errors occur when moving duplicated Material Instances

UE - Rendering Architecture - Materials - Feb 9, 2023

Licensees have reported that two UMaterialInterfaceEditorOnlyData objects are being created for duplicated assets, causing a name conflict when renaming. ...

Editor Crashes when copy/pasting an emitter in the Niagara timeline

UE - Niagara - Feb 8, 2023

When creating the emitter's track widget we search for the stack view model's root entry, but the stack view model pointer is null, so we crash.  ...

Calling RemoveAllAnchors function on a non-clustered geometry collection falls extremely fast

UE - Simulation - Physics - Destruction - Feb 8, 2023

Non-clustered geometry collections applied RemoveAllAnchors are not put into FPBDRigidsSOAs::DynamicGeometryCollectionArray, so acceleration is not reset every tick and they fall super fast. The fol ...

NiagaraEditor timeline folders are not saved correctly

UE - Niagara - Feb 8, 2023

It works correctly in 5.0.3. ...

Index of Texture Cube Array cannot be specified with VisualizeTexture on D3D11

UE - Rendering Architecture - RHI - Feb 8, 2023

Licensees have reported that they always see Index 0 for Texture Cube Arrays. Looking at the RenderDoc, Index1 has a white texture but it's not actually visible.[Image Removed] ...