What is depth cueing in computer graphics?

Answer 1

Depth cueing can be used for many rendering effects such as fog, haze, mist but can also be used to render some sorts of water. It can also be used for the effect that objects farther away from the viewer get darker with increasing distance. In this document I'm gonna explain the latter one, the other ones can be rendered pretty easy using an inverse logic (atmospherical effects can be rendered by making use of the fact that in fog objects farther away are getting more and more "milky", that means are getting brighter with increasing distance). The water effect mentioned before refers to rendering murky or cloudy water (or more general each liquid with visibility reduced to a few meters). Generally depth cueing means that objects get darker, brighter or whatever with increasing distance.