Back in the Quake 1,2,3 days the engine would generate multiple lightmaps for surfaces a light affected. That way you could toggle certain lights on and off and even adjust their brightness even though they were “static”.
I have a project that could really use the ability to save two sets of lightmaps and switch between the two but also can’t use stationary lighting due to rendering speed requirements of VR.
Given that we can see the lightmaps generated by lightmass in the world it seems like it should be too big of a deal to generate a set of lightmaps, then save them, then generate another set and be able to swap them out.
Any idea how much effort would be involved doing something like this?