Foot Placement: Division by 0

UE - Anim - Gameplay - Jan 31, 2025

static FVector PointDirectionPlaneIntersection(const FVector Point, const FVector Direction, const FPlane Plane) { return Point + Direction * ((Plane.W - (Point | Plane)) / (Direction | Plane)) ...

Lumen ignores Landscape Holes (Landscape Visibility) when Hardware Ray Tracing is enabled and Ray Lighting Mode is set to Surface Cache

UE - Graphics Features - Ray Tracing - Jan 31, 2025

Context Lumen is the default global illumination and reflections system. Lumen renders diffuse interreflection with infinite bounces and indirect specular reflections in large, detailed environments ...

Foot Placement: Up vector is not configurable

UE - Anim - Gameplay - Jan 31, 2025

Up vector is not configurable so Foot Placement does support variable gravity cases. ...

Check hit when setting push-model array from a different actor's blueprint

UE - Networking - Jan 31, 2025

This is due to the same reason behind [Link Removed], as the stack object is passed to MARK_PROPERTY_DIRTY rather than the array property's owner.  ...

HLODs appear dark/near black when built for very large geometry with Virtual Textures enabled

UE - World Creation - Worldbuilding Tools - HLOD - Jan 27, 2025

Building HLODs for a very large landscape with Virtual Textures enabled results in the built HLODs being very dark for the most part. Building the same large landscape's HLODs with Virtual Textures ...

nDisplay is not linking correctly the Camera Components inside the nDisplayConfig.uasset with display viewports when their Projection Policy is set to Camera. This issue appears when a packaged game is launched from the Switchboard as "Packaged Game".

UE - Virtual Production - nDisplay - Jan 27, 2025

When launching a packaged game from the nDisplay Switchboard, the nDisplayConfig file fails to link the cameras to the viewports. Inside the log generated by the Switchboard an error is displayed th ...

In -game in Editor, if streaming-in a LevelInstance and initialize its world partition, then leaving that cell and make it go outside the streaming grid, to re-enter it again, will trigger a check(!StreamingPolicy) if no GC has happened during that time.

UE - World Creation - Worldbuilding Tools - World Partition - Jan 27, 2025

This crash can be fixed by adding a couple of || IsRunningGame() like it is done here:    FGenerateStreamingContext Context = FGenerateStreamingContext()        .SetLevelPackagesToGenerate((bIsPIE ...

UEditorEngine::AddPendingLateJoinClient checks original PIE/SIE state, not current state

UE - Networking - Jan 27, 2025

When adding late joining clients, the engine checks the originally requested EPlaySessionWorldType, rather than checking whether or not the session is currently simulating or not. This means if the ...

PropertySet : changes in instancedstruct are not detected by the watch

UE - Graphics Tools - Modeling Tools - GeometryScripting - Jan 24, 2025

Hi, I tried to use for a scriptable tool the watch property node for a struct. The objective for me was to offer to my user a view of a struct in the scriptable tool and have these modifications b ...

MRQ - Skeletal Mesh motion vector are output only for the last sample of Spatial Sample Count

UE - Anim - Sequencer - MRQ - Jan 24, 2025

Skeletal Mesh motion vectors are output only for the last sample of Spatial Sample Count, while Static Mesh motion vectors are output in all samples. UDN: [Link Removed] Slack thread: [Link Remo ...