Hi, CREATE-friends -- We'd like to add support for the "Destination Atop" and (especially) "Source Atop" compositing modes in MyPaint, to allow users to make groups clipped by their bottom layer's alpha. Use case: add shadows and highlighting without having to create a separate masking layer set to dst-in/dst-out.
https://github.com/mypaint/mypaint/pull/284 https://github.com/mypaint/mypaint/issues/181#issuecomment-89778738 http://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_srcatop http://www.w3.org/TR/compositing-1/#porterduffcompositingoperators_dstatop Does anyone have any objection to "svg:src-atop" and "svg:dst-atop" being added to the list at: https://wiki.freedesktop.org/www/Specifications/OpenRaster/Draft/LayersStack/#composite-opattribute The blending function for the modes is to be Normal. I'm Cc:ing Boud because I bet Krita already has this... Hopefully the naming of the element won't be an issue; the pattern has always been fairly obvious. -- Andrew Chadwick _______________________________________________ CREATE mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/create
