Distant mesh / vista have visible Lumen bounces

UE - Rendering Architecture - Jun 15, 2024

Objects far outside of the Lumen Scene don't temporally accumulate screen traces, leading to heavy flickering. It appears that the temporal reprojection is failing when comparing the depth in "Scree ...

Dependent values of CVars for animation budget allocator are not correctly updated when setting from ini

UE - Anim - Runtime - Jun 14, 2024

It seems that the FConsoleVariableDelegate used with CVars in AnimationBudgetAllocatorCVars.cpp does not get called when values get set initially from ini (e.g. DefaultEngine.ini) so dependent value ...

Deploy device not saved in Project Launcher

UE - Editor - Jun 13, 2024

The deploy device selected in project launcher custom profile does not get saved. After restarting the editor, all selections are cleared, and have to be re-selected in the deploy device every time. ...

AlwaysTickPose is prone to double firing notifies in a dedicated server setup.

UE - Anim - Gameplay - Jun 11, 2024

See UDN for more info: https://udn.unrealengine.com/s/question/0D5QP00000MfU8l0AF/uanimnotifynotify-is-called-twice-for-the-same-notify-on-server-in-a-multiplayer-game ...

Inconsistent behavior with data layers and attached actors

UE - World Creation - Worldbuilding Tools - Data Layers - Jun 10, 2024

[VariantManager] Over exposure when using image from file as thumbnail

UE - Editor - Content Pipeline - Variants - Jun 10, 2024

This is a sRGB color space issue. Potential solution: Use regular texture import instead of FImageUtils::ImportFileAsTexture2D in ThumbnailGenerator::GenerateThumbnailFromFile ...

Draw Invalidating Bounds debug view mode for Virtual Shadow Maps is gone in 5.4

UE - Graphics Features - Shadows - Jun 9, 2024

The CVar "r.Shadow.Virtual.Cache.DrawInvalidatingBounds" referenced in the official 5.4 documentation for virtual shadow maps, no longer shows any bounds as the underlying code seem to be removed in ...

PostReplicatedChange called for fast array item even when no values change

UE - Networking - Jun 7, 2024

Unless a property is set to REPNOTIFY_Always, we compare the property's received value to the current value on the client before calling the OnRep function. However, when determining if a fast array ...

Material doesn't apply with Linux packaged game

UE - Editor - Content Pipeline - Import and Export - Jun 6, 2024