Well, in the same paragraph it goes on to say: > ...and Tim Sweeney and Epic Games for their confidence in helping us finance our research via Epic Megagrant.

Well, in the same paragraph it goes on to say: > ...and Tim Sweeney and Epic Games for their confidence in helping us finance our research via Epic Megagrant. This new technique was developed entirely in the open and implemented under MIT license, so anyone can take it for using in their own engines and games. So there you go. Whatever Godot devs do, it's MIT and anyone can take. Epic gets an agile engine/team to do the research, and once a viable implementation exists they can analyze it and see it it's implementable within UE, should they want to. Of course, I write this without knowing if Unreal Engine has SDF Global Illumination. Maybe they already have it, but wanted to finance a new alternative to compare against their own.