Hi all,
I’m currently trying to get myself out of a lightmapping issue. I’ve been working on a Unity arch/viz project for a client for a few months now. Being a novice at lightmappign before starting this project, I’ve been able to teach myself most of what I need to know.
I’m taking 3 sections of a skyscraper that are meant to be turned on/off to show off major sections of the building. The bottom floor is the “Lobby” slice, the middle is the “Office” slice, and the top is the “Roof”. In order to get the baked lighting look I’m looking for, I’ve decided to put each slice into their own individual scenes and bake each slice separately.
I have been able to get my separate bakes, but whenever I try to merge one slice from a separate scene into my current scene (ex: try to take the Office slice from one scene and put it into the Lobby scene), the lightmapping looks all wonky and bad. I assume it has to do with the current scene trying to write it’s current lightmap data onto the merged slice rather than merging the lightmaps from the other scene.
I’ve tried copy/pasting the slice and also making a prefab of the slice, but it still looks wrong. Is there any way around this or is it impossible to use lightmaps from two separate scenes? I apologize if this isn’t a good explanation. 
(I tried posting this in the General Graphics forum, but that section of the forums seems to be very quiet.)