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A comment on Tom Duff on Duff's Device (1988). Parent comment

Re:Tom Duff on Duff's Device (1988) by versteegen on Sunday September 06, 2015 @12:58AM (#10176848)
Thanks for mentioning this. I found a nice article about it and generalisation to blend modes here: http://ssp.impulsetrain.com/porterduff.html
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