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Unlike alpha blending, fogging, which is intended to create a fog effect, incorporates depth information into the calculation, increasing the depth effect. A fogging graphic takes into account how far an object

is in space.

Fogging, graphic from

Fogging, graphic from

The fogging effect is stronger the further back an object is placed in the view. The effect gives an increased impression of depth. Pixels

thathave no spatial depth are therefore unclouded, whereas pixels that are deep in space have a strong clouding.

In fogging, represented by a gray fog color, alpha blending increases continuously. Pixels farther away from the viewer are grayer, pixels closer to the viewer are less gray.

Depth cueing, or depth shading, is a technique similar to fogging, with the difference that in depth cueing the fade is to black, rather than white as in fogging.

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Englisch: fogging
Updated at: 19.10.2019
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