Lightmap
!shadowmap
A lightmap is one or more textures that contain the lighting on a object. This can for example be used to store the GI for static lights and objects.
Reference
Baking artifact-free lightmaps on the GPU - 2018
Little Lightmap Tricks - 2017
Light Map in "Seal Guardian" - 2017
Pre-computing Lighting in Games - 2010
Shading in Valve’s Source Engine - 2006
Half-Life 2 / Valve Source Shading - 2004
Light Mapping - Theory and Implementation - 2003
Ramblings in Realtime: Chapter 4 - Quake's Lighting Model: Surface Caching - 2000