Different instanced materials are seen as the same material due to GUID

UE - Rendering - Jun 3, 2021

See licensee description of the issue: The problem appears when I have two instanced materials with the same number of parameters. I've noticed that ShaderMapId has MaterialLayersParameterIDs where ...

DFAO artefacts created by landscape painted invisible

UE - Rendering - Jun 3, 2021

Looks like the issue stems from the DistanceFieldBentNormalAO pass ...

Decals can't use TransformLocalPositionToWorld material node

UE - Rendering - Jun 1, 2021

Likely we just need to create a new macro to enable TransformLocalPositionToWorld and TransformLocalPositionToPrevWorld in alternative use cases such as this. ...

DistanceToNearestSurface used for post process broken when separate actor culled

UE - Rendering - May 27, 2021

This one may not necessarily be a bug, as this is related to the nature of culling. If it is not, please let me know if there is an alternative method the licensee could use here in order to track a ...

Crash in virtual texturing when material instance texture sample param is switched to a non-square texture

UE - Rendering - May 27, 2021

The 4kVT is applied correctly, and you can switch the master material sampler to use the 2048x1024 texture, but if you switch it via the material instance param instead, the crash occurs. ...

Motion blur on player/weapons with TAA

Rendering - May 27, 2021

Looks like this can occur with motion blur off aswell, so likely it's a TAA motion vector issue. Similar issue occurs in UE5 (see [Link Removed]) ...

Ornatrix Alembic files display unnatural movement in Groom after import

Simulation - Physics - May 26, 2021

Video of the issue here - [Link Removed] ...