RE: [Algorithms] Fogging additive transparent polygons

[Charles B. <cb...@cb...>]

Well, one good way is to use the fog color :^)  Black for additive
passes, white for multiplicative passes...  the other cool way is
to use the trilinear mipping and making the lower mip-map levels
be entirely transparent.  This can cause some anomalies since the
mip-map selection is done not just by distance but also by angle.
The final way is if you have vertex-shader hardware...

At 10:53 AM 3/28/2001 -0800, you wrote:
>What method do you use to perform the fading?  Does it require that
>geometry be sorted back to front?
>
>-----Original Message-----
>From: Charles Bloom [mailto:cb...@cb...]
>Sent: Wednesday, March 28, 2001 10:15 AM
>To: gda...@li...
>Subject: Re: [Algorithms] Fogging additive transparent polygons
>
>
>
>My solution to all these fog problems is just to fade that stuff out
>in the distance.  It looks great, and it has other advantages, such as
>being able to fade it out faster than the fog and then just make it
>disappear.  This solves the problems with all extra passes, basically
>you just fade them out and only do base texturing + lighting in the
>distance.
>
>
>----------------------------------------------------
>Charles Bloom    cb...@cb...    www.cbloom.com
>
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----------------------------------------------------
Charles Bloom    cb...@cb...    www.cbloom.com