Lightmap UVs

Use the Lightmap UVs tool to manually generate any missing lightmap UVs. This works on each Mesh in every open Scene that is missing lightmap UVs.

Tip: You can edit lightmap generation parameters for specific objects in the ProBuilderMesh component on ProBuilder objects. You can also modify the defaults on the ProBuilder Preferences window.

There is one option for this tool which you can access like any other toolbar option. You can also access it using the menu (Tools > ProBuilder > Editors > Open Lightmap UV Editor), because it appears on the Lightmap UV Editor window.