Game Development Reference
But lots of meshes in UDK are set up so that you can put a lightmap on them too,
and this fire hydrant is one of them. Open up the mesh in the generic browser and
look at the LightMapCoordinateIndex value. If it's 1 , then the mesh is probably set
up for lightmaps, otherwise it probably isn't.
So how do we actually turn on the lightmap?
Close the Staic Mesh Editor , select the fire hydrant in the scene, and open up its
properies (hit F4 ). Open up StaicMeshActor , StaicMeshComponent , scroll all the
way to the botom, and open the StaicMeshComponent subcategory.