Unreal Engine 5 LUMEN

[anonymous_user_72ac72801 (anonymous_user_72ac7280)]

Looks like they are using a combination of their previous SVOGI system
https://youtube.com/watch?v=MOvfn1p92_8
an improved version of their previous distance field / height field GI they introduced in 4.8 and kite demo

https://forums.unrealengine.com/deve…ield-gi-in-4-8

and finally their current screen space GI.

https://twitter.com/UnrealEngine/sta…38329202823168

That is incredibly clever. These devs are kinda smart.