Unity provides the following lightmappersA tool in Unity that bakes lightmaps according to the arrangement of lights and geometry in your scene. More info
See in Glossary for generating lightmapsA pre-rendered texture that contains the effects of light sources on static objects in the scene. Lightmaps are overlaid on top of scene geometry to create the effect of lighting. More info
See in Glossary and giving your SceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
See in Glossary global illumination:
For advice on setting up a lightmapper, see Lightmapping: Getting started.