Re: [Algorithms] Entire object translucency fading

[Richard M. <mi...@tr...>]

Leave ZWRITE on, and just render them twice, except turn color-writes off=
=20
for the first pass :-)

Or alternatively, render them solid and then blend a copy of the backbuff=
er=20
on afterwards to achieve transparency.

--=20
()()      Richard Mitton
( '.')
(")_(")       code jester .:. treyarch .:. mi...@tr...


----- Original Message -----=20
From: "Mark Wayland" <Mwa...@to...>
To: <gda...@li...>
Sent: Wednesday, November 23, 2005 3:56 pm
Subject: [Algorithms] Entire object translucency fading


> Hey all,
>
> I was wondering if there were any neat tricks to rendering translucent
> (fading) objects (as a whole) correctly?
>
> The problem I have at the moment is that when I'm fading an object out,
> the render states go from
> ZTEST/ZWRITE to ZTEST only, causing the polygons of the object to
> incorrectly self-sort resulting
> in a nasty pop (obviously same problem when fading in).
> The objects themselves are sorted from back to front for per-object
> correct blending, but I can't
> afford to do that per-polygon.
>
> Any ideas?
>
> Thanks and regards,
> Mark
>
>
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