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001105_owner-lightwav…mail.webcom.com_Wed Oct 18 20:34:03 1995.msg
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1995-11-07
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(1.37.109.15/16.2) id AA004223643; Wed, 18 Oct 1995 20:34:03 -0700
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Date: Wed, 18 Oct 1995 20:14:18 -0700 (PDT)
From: John Gross <jgross@netcom.com>
Subject: Re: Softshadows with transparent objects
To: Joe Angell <jangell@risd.edu>
Cc: Fernando Martins <fmartins@orthanc.esoterica.pt>,
LightwaveML <lightwave@mail.webcom.com>
In-Reply-To: <Pine.3.89.9510182138.B7225-0100000@minnie.risd.edu>
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> > -if the ball is solid and I have 'shadow'map' on, I get a nice soft
shadow > > -if the ball is transparent and 'shadow map' is on, I get THE
SAME soft shadow > > (the shadow doesn't show that the ball is
transparent)
> >
> > So the only solution to have a shadow that shows the tranparency of
the ball > > is to turn 'trace shadows on', right?! But the shadows will
not be soft... I > > would like to get soft, fluffy, 'translucent'
shadows... Isn't that possible?! > >
Shadow maps _always_ cast solid shadows, even if it is 99.99%
transparent. For true "transparent" shadows, you must use ray tracing.
Tip: If you don't want your object to cast shadow maps, turn off Cast
Shadow *and* Self Shadow for the object.
JG
--
John Gross <jgross@netcom.com> sent this message.
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