Using GeoMerge on fragments of a GeometryCollection (GC) will create a new single particle while removing the old particles, but although you end up with less particles, the disk file size of the GC uasset increases.

UE - Simulation - Physics - Destruction - Nov 26, 2024

Using GeoMerge on fragments of a GeometryCollection (GC) will create a new single particle while removing the old particles, but although you end up with less particles, the disk file size of the GC ...

In UE5.5(final), when adding plugin from an older version of Unreal to a BP project, we are informed that the Engine Modules are out of date, and cannot be compiled while the engine is running. Please build through your IDE.

UE - Foundation - Cpp Tools - Nov 19, 2024

In UE5.5(final), when adding plugin from an older version of Unreal to a BP project, we are informed that the "Engine Modules are out of date, and cannot be compiled while the engine is running. Ple ...

Direct Link is not finding source - macOS Sequoia

UE - Editor - Content Pipeline - Datasmith - Exporters - Nov 14, 2024

Direct link with macOS Sequoia seems to be broken as Twinmotion cannot detect the Direct Link source, it seems the data is properly written in the cache directory. Update: Another user reports th ...

The Open Asset dialog is disabled during breakpoint

UE - Editor - Workflow Systems - Oct 31, 2024

Lumen doesn't handle Area Lights Reflection Occlusion well

UE - Graphics Features - Lumen - Oct 18, 2024

Decal normals causes underlying shadow masks to become visible

UE - Graphics Features - Oct 14, 2024

When using a Translucent or Modulate blend mode decal, the underlying shadow may become visible with VSMs, RT Shadows, and with the Pathtracer. When no normal is applied and a sphere is used to tes ...

Calling GetMaterial during compile on load can cause the material shader to fail to compile

UE - Rendering Architecture - Materials - Oct 4, 2024

Calling UStaticMeshComponent::GetMaterial() during a Blueprint compile on load can cause the Material shader to fail to compile because GetMaterial will trigger a PostLoad call on that Material and ...

Setting AnimationMode to "UseAnimationAsset" inside Sequencer might not be set properly.

UE - Anim - Sequencer - Sep 30, 2024

Adding a new key inside a LevelSequence that changes the AnimationMode of a SkeletalMesh to "Use Animation Asset" can bug out the AnimationMode constantly change between "UseCustomMode" and "UseAnim ...

PrimitiveSceneProxy CreateSceneProxy override not working in 5.4

UE - Rendering Architecture - Aug 30, 2024

Overriding CreateSceneProxy function from PrimitiveSceneProxy for a custom class no longer renders in 5.4 even though the same code is working in 5.3. ...

The Sorting Issue Between Height Fog and Transparent Objects

UE - Graphics Features - Aug 21, 2024

When a LocalFogVolume is used with ExponentialHeightFog, it does not correctly fog translucent objects. ExponentialHeightFog and Volumetric Fog from a LocalFogVolume both correctly occlude transluc ...