Unreal Engine Issues
Unreal Engine Issues
GenerateVisibileRayTracingMeshCommands Severely Reduces Foliage Performance Even if no RayTracing is Used
UE - Graphics Features - Lumen - Sep 18, 2019GenerateVisibileRayTracingMeshCommands Severely Reduces Foliage Performance Even if no RayTracing is Used. Found in 4.23 CL# 8386587 and 4.24 CL# 8748719 ...
Shader Complexity viewmode doesn't work on masked & pixel depth offset material
UE - Rendering Architecture - RHI - Nov 11, 2019Materials with mask and pixel depth offset appear to be empty in Shader Complexity viewmode in SM5. Both happens in material preview and world viewport. [Image Removed] Works fine in ES31. [Ima ...
Importing .glb file results in crash
UE - Editor - Content Pipeline - Import and Export - Nov 13, 2019When importing a .glb file from Blender, the editor crashes. The user has been able to import other .glb files, but ran into an issue with the one provided being unable to be imported. ...
ShouldRender() in USceneComponent Doesn't Check Against IsVisibleInEditor()
UE - Graphics Features - Nov 22, 2019IsVisible()/IsVisibleInEditor() should be a contribute to the logic in ShouldRender(). NOTE: This code was written during the UE3 life cycle. Found in 4.22 CL#7053642 ...
Merging actors with two-sided materials produces incorrect results
UE - World Creation - Worldbuilding Tools - Merge Actor - Feb 24, 2020Merging two actors using a two-sided material produce incorrect results. Notes: Tested with "Allow two-sided material" on and off, the same result is produced. The same issue can be seen when ge ...
Cannot navigate to native function source code from blueprint editor
UE - Foundation - Core - Feb 1, 2020REGRESSION RANGE WORKING: 9404494 (right before Dev-Core copy up at 9405827 BROKEN: 9407021 (Dev-Networking copy up) NavigateToFunctionSource: Unable to find symbols for 'UPaperFlipbook::GetNumFr ...
RetainerBox may cause memory leak
UE - Editor - UI Systems - Slate - Aug 20, 2020Essentially, this memory leak should be counted in the UI section, but it is counted in the SceneRender section. This seems to be due to the behavior of MemStackAllocator and FixedSizeAllocator. Th ...
Deprecated components can still be added via the Add Component button
UE - Gameplay - Blueprint Editor - Oct 19, 2021The UDN has a possible fix for this issue in the Component Type Registry You can use the following as a test C++ class: #pragma once #include "CoreMinimal.h" #include "Components/ActorComp ...
[MetaSounds] - Changing an Input to Modulation Parameter crashes editor due to module load order
UE - Audio - MetaSounds - May 27, 2022Setting an Input type on Modulation Parameter crashes the editor with:Assertion failed: Pair != nullptr [File:E:\SMoyls_UE5_Release-5.0\Engine\Source\Runtime\Core\Public\Containers\Map.h] [Line: 643 ...
Landscape smooth and flatten tools deform the terrain incorrectly
UE - Graphics Tools - Terrain - Landscape - May 25, 2022The Landscape smooth and flatten tools can deform the landscape incorrectly causing chunks of the landscape to be removed (see attached image). ...