POV-Ray : Newsgroups : povray.pov4.discussion.general : Controlled effect on Alpha channel Server Time: 17 Jun 2019 12:36:14 GMT
  Controlled effect on Alpha channel (Message 1 to 1 of 1)  
From: H  Karsten
Subject: Controlled effect on Alpha channel
Date: 2 Nov 2009 01:30:00
Message: <web.4aee35018fece1dada6353d60@news.povray.org>
A cool thing would be, to let the object know, if it is visible in the alpha
channel, ore not.

Maybe: no_alpha=on or pigment{color rgba <1,1,1,0>} will make the object visible
in the picture, but not in the alpha channel.

Holger :)

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