Epic's GPUlightmass

[Luoshuang]

@kurylo3d

This is so awesome. Cant wait until its in an actual build ready to use

Does it handle hlods well? Luoshuangs old one used to not handle those and take the hlods into account into lighting the rest of the envrionment leaving awkward lighting where hlods would intersect.

HLOD and LODs are not implemented currently, but shouldn’t be very hard on top of the new system (with proper instance management)