Blobby particle transparency/alpha question 2003-12-01 - By Robert Martinu
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-- -- Original Message -- --
From: "Zach Prichard" <zwp1@(protected)>
To: <maya@(protected)>
Sent: Monday, December 01, 2003 12:55 PM
Subject: Blobby particle transparency/alpha question
> So I figured I could go back to my rain test scene...render out some rain
drop stuff and composite them onto the windows seperately in A/FX. However
the transparency that is inherit in the phong shader I'm using for the
raindrops doesn't seem to
> work for the blobby alpha. If there's something behind it IN the scene
then you can see whatever's behind the particle perfectly....however, by
rendering the particles by themselves, I discovered that it actually just
doesn't have a real alpha.
You might get something like an alpha-pass if you set the background to
black and turn the self illumination of the particles up. The more
transparent they are, the more of the background color
comes through, the result is usable as an alpha map.
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