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View Full Version : What is "screen door transparency"?



hexa
10-29-2003, 10:15 PM
What is a differet in effect from blending ?
If I need to get transparent color(in scene without textures) - what option should I use ?

nexusone
10-30-2003, 04:24 AM
You still use blending, look at nehe.gamedev.net tutor on blending.


Originally posted by hexa:
What is a differet in effect from blending ?
If I need to get transparent color(in scene without textures) - what option should I use ?

Relic
10-30-2003, 04:59 AM
Screen door transpareny is the use of glPolygonStipple patterns to mask out pixels in a dither pattern.
E.g. 50% transparent is a checkered bitmap, half of the pixels are not drawn.
Looks butt-ugly but works without depth sorting with full depth compare functionality enabled. Often used in CAD apps.

Javac
10-30-2003, 05:06 AM
Thanks a lot about brief and clear answer!