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Re: note on problem reports

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Re: note on problem reports

Subject: Re: note on problem reports
From: Gary Oberbrunner <email@hidden>
Date: Tue, 22 Jul 2008 10:29:01 -0400

Paul Schneider wrote:

One reason why many compositing applications prefer working premultiplied is that the typical "over" operation is so much simpler;

The other big reason is it allows for emissive foreground images (bright but fully transparent, like a lens flare). Many optical effects never look their best in a non-premult compositing system.

--
. . . . . . . . . . . . . . . . . . . . . . . . .
Gary Oberbrunner                email@hidden
GenArts, Inc.                   Tel: 617-492-2888
955 Mass. Ave                   Fax: 617-492-2852
Cambridge, MA 02139 USA         www.genarts.com
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References:  
  >note on problem reports (From: Kristian Harms <email@hidden>)
  >Re: note on problem reports (From: Darrin Cardani <email@hidden>)
  >Re: note on problem reports (From: Kristian Harms <email@hidden>)
  >Re: note on problem reports (From: Paul Schneider <email@hidden>)




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