Horde can create multiple users with the same Perforce account

UE - Foundation - Horde - Jul 19, 2024

Users note seeing multiple accounts being added to Horde's user collection with the same account details. ...

Reflection Captures permanently unload with world streaming

UE - Graphics Features - Jul 19, 2024

When a reflection capture is unloaded due to streaming, it cannot be reloaded when the player returns to that area in the world because FReflectionCaptureData::OnDataUploadedToGPUFinal deletes the C ...

Objects that return false for NeedsLoadForClient not loaded on listen servers

UE - Networking - Jul 19, 2024

For instances that are not a dedicated client or dedicated server (e.g. packaged games with TargetType "Game"), GIsClient will be true, but GIsServer will be false. This leads to objects that retur ...

GPU ISM LOD doesn't take into account per instance scales when calculating LOD ranges

UE - Graphics Features - Jul 19, 2024

When we set up the draw calls for ISM with GPU LOD selection we submit a draw call per LOD. For this we calculate the minimum and maximum possible LOD with a call to ComputeLODForMeshes() in FReleva ...

GPU ISM LOD uses bounds length instead of radius

UE - Graphics Features - Jul 19, 2024

When calculating LOD for instances on GPU in NaniteCullingCommon.ush we use:float RadiusSq = length2(LocalBoxExtent); This doesn't exactly match the CPU logic for static mesh component LOD select ...

FNetGUIDCache warning when attaching non-replicated component to a replicated scene component

UE - Networking - Jul 18, 2024

When the replicated scene component's AttachChildren array is replicated, the package map attempts to serialize the non-replicated component, causing the warning that the object is not supported. ...

Crash when load the levelinstance what is set "LevelBehavior=Standalone" in the stanadalone game

UE - World Creation - Worldbuilding Tools - Level Instances - Jul 16, 2024

A crash occurs when LevelInstance with LevelBehavior set to "Standalone" is loaded in a standalone game. Specifically, when LevelInstance is deleted by moving outside the loading range of the worldp ...

Flickering shadows/GI when DrawMaterialToRenderTarget is called per tick in PIE

UE - Rendering Architecture - Jul 11, 2024

When DrawMaterialToRenderTarget function is called on tick and actors are spawned in game, the lumen shadow/GI visually flickers. Debugging shows that the lumen screen probes are flickering as well. ...

'Max World Position Offset Displacement' causes culling issue on HISMC/foliage in 5.4

UE - Rendering Architecture - Materials - Jul 9, 2024

Foliage/hierarchical instanced static mesh components have issues with culling when their material's "Max World Position Offset Displacement" value is a higher amount, e.g. 100.0. ...

Actors of standalone level instances remain unloaded in editor

UE - World Creation - Worldbuilding Tools - Level Instances - Jun 27, 2024