Yeah, it's been in the game for years.
Ultra lightmaps will get you more lightbounces and better quality (bigger) lightmaps locally. However, all lightmaps saved in the GBX track file are compressed down to Default quality. Even High quality lightmaps are compressed to Default. I don't quite understand it, but I believe if you start with higher quality lightmaps, such as ultra, the resulting compressed lightmap that ends up in the gbx file does indeed end up being slightly better quality than if you just computed at Default quality to begin with.
Anyway, for local play, or for video making, the Ultra setting is awesome. It's especially nice if your map is huge with a lot of dark areas, such as some RPGs. It can create a smoother atmosphere.
Nice find though.
Last edited by eyebo, 2016-02-03 09:32:12