I read similar topic and dont find answer. I still don’t understand how to use lightmaps in the v3 editor if it’s not possible to set uv set 2 for lightmaps.
Now in 3ds max I am creating an additional object on which I assign a material with a map with second uv set, export this and reuse lightmap texture in editor.
or second trick is set this is in code editor or directly in *.babylon file. I did not find other options.
The second question relates directly to the display of lightmaps in the editor and player. the default mode for light 0 in the scene is 0
i use next line of code scene.lights.lightmapMode = 1 and all works fine but I think this is some kind of editor bug