Light probes
From Divinity Engine Wiki
General
Light probes are the Larian Engine's system for indirect lighting and reflections.
In short, a light probe is an object you place in the level. It looks at the surrounding lighting and objects and uses that information to calculate realistic indirect lighting.
This includes light bouncing off of objects, causing colors to carry over to nearby objects (this effect is called color bleeding).
It also provides accurate reflections of surrounding objects.
Types
There are 2 types of light probes, used for different parts of the overall lighting.
Distant
Distant probes determine
Local
Usage
Shapes
Atmospheres