Shadow mapping: Difference between revisions

Revision as of 20:23, 5 November 2014

Revision as of 03:04, 1 August 2015

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'''Shadow mapping''' or '''projective shadowing''' is a process by which [[shadow]]s are added to [[3D computer graphics]]. This concept was introduced by [[Lance Williams]] in 1978, in a paper entitled "Casting curved shadows on curved surfaces". Since then, it has been used both in pre-rendered scenes and realtime scenes in many console and PC games.

Shadows are created by testing whether a [[pixel]] is visible from the light source, by comparing itthe pixel to a [[z-buffering|z-buffer]] or ''depth'' image of the light source's view, stored in the form of a [[texture mapping|texture]].

==Principle of a shadow and a shadow map==