transparency (and draw callbacks)

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ken sartor (sartor++at++visidyne.com)
Thu, 25 Jul 1996 10:07:20 -0500

Hi -

I posted a question on how draw callbacks work a few days ago.
I got several replies (that i am very appreciative of - THANKS!)
but none really solved the problem i am struggling with. Perhaps
it is due to the manner i which i stated the problem... so here
goes another try.

Is there *ANY* way in Performer 2.x to draw two semi-transparent spheres
that have a common center but different radii such that they are
both correctly rendered (front and back of both spheres visible to the
observer)? If so, *CAN* this be done in a draw callback?
Any references to relevant documents on the details of how Performer
handles callbacks and transparency would be vastly appreciated!

Thanks!

ken

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