Unreal Engine 5 LUMEN

[UnCinema]

Turns out, it’s a clever combination of methods:

https://www.eurogamer.net/articles/d…-demo-analysis

To achieve fully dynamic real-time GI, Lumen has a specific hierarchy. “Lumen uses a combination of different techniques to efficiently trace rays,” continues Wright. “Screen-space traces handle tiny details, mesh signed distance field traces handle medium-scale light transfer and voxel traces handle large scale light transfer.”