Re: tree border

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Frederic Francis (pffred++at++llogic.com)
Wed, 19 Nov 1997 18:14:36 -0500 (EST)

IMHO, the solution proposed by MultiGen is not the best one. There is a
general way to preprocess any alphatexture which eliminates completely the
"alpha halo" or "alpha outline" effect without having to generate custom
mipmaps.

We have an app that navigates through forests with 3D trees (conical
trunks + double-sided single polygon branches). Our typical forest
has a few hundred trees each with a several dozen branches. In this
situation, the average color approach doesn't cut it.

I am not allowed to give out the algorithm but I felt that if someone
is writing an app where the visuals could be ruined by "alpha halo"
they should know that it can be eliminated.

                                Best Regards,

                                Fred.
__________________________________________________________________

Frederic Francis email: fred++at++llogic.com
Director of Technology phone: 1-514-287-1166
Lateral Logic fax: 1-514-287-3360
__________________________________________________________________
                                 

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