Lightmap multiple floors in the same scene

Unity Engine
1

We’re building a quick demo to showcase the ability to toggle multiple floor types (hardwood, tile, carpet, etc) within a virtual real estate setting. Normally, this is just a simple material swap, but we’re also using some scripts for reflections and such (which differ between the floor types) so in this case it seems like it would be easier to just toggle the floors as individual objects.

So the question: Can I have 3 floors in a scene and have each one lightmapped? The truth is they could all share the same lightmap, but I’m not sure if that’s any more achievable then somehow lightmapping them all. Ideally I’d just bake floor 1, switch it off, bake floor 2, etc. but each time you rebake it blows away any existing lightmaps so that doesn’t work.

Any ideas? Hopefully I’m just missing something simple :slight_smile:

2

Just replace the texture instead of the model?
Then you just need one lightmap

3

Thanks for the reply Ferry, I had mentioned that in the post but because the different floor surfaces are also using different scripts for reflections, its more than just a simple material swap.

Now maybe another option is toggling those scripts along with the materials, BUT I was at least curious if its possible to lightmap multiple objects (that occupy the same space.)