Glow

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Glow often refers to the visual effect of air being illuminated near a light source: sun rays through dust, the beam of a flashlight on a foggy night, etc.

In a real-time 3d game, glows are faked using a variety of techniques.

The term "glow map" usually means Emissive map instead. Emissive does not illuminate the air; it does not change the silhouette of a model.


Lighting doom3glow.jpg A Game Art Trick: Doom 3 – Volumetric Glow by Simon "SimonT" Schreibt

Lighting lightbeam.png UDK Volumetric Light Beam Tutorial by Epic Games

See also Bloom.


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