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Old 08-18-2009, 07:50 AM   #1
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Bill Martin
Vancouver, Canada
Join Date: Oct 2008
Posts: 29
alpha channel has a thin white border

when using a black and white image with a projection node, I get a thin white border left behind when the image is used for both the alpha channel and color. Anyone else have this problem? Is there a premultiply option that I am missing?
Old 08-19-2009, 02:57 AM   #2
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David Johnson
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Melbourne, Australia
Join Date: Jun 2003
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Projection nodes assume that the color is "straight", but yours is premultiplied. Often you can just ignore it, but sometimes that fringe is obvious. The easiest way I know to fix it is to resave the fileTexture from aftereffects with output color mode set to "straight (unmatted)". (Maybe you can do the same in other apps, but I only know aftereffects).

-- David
Old 08-19-2009, 02:57 AM   #3
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