Agreed. It seems easier and less error proned. And also more consistent
with other applications.
How would backward compability work?
-David
2012-11-13 07:58, Carlos López González skrev:
I think that this material is important to read:
http://www.w3.org/TR/compositing/
I wonder if it wouldn't be good to rethink the current Synfig blending
methods and modify them to stick strictly to the W3C standards. It
would allow to use external libraries without the issues I'm having
with Cairo operators.
Of course the old blend methods should still working inside Synfig but
we shouldn't continue using the non standard blending methods.
Also it might be interesting to separate the blending parameters in
two. First in what is called in the document "The Porter Duff
compositing operators" (that defines how the alpha are combined) and
the "Blending" that is the pure color combinations. I need to read the
document completely to profile this properly.
quote:
Porter Duff compositing takes into account the overall shape of the
graphic element and its opacity, as well as the opacity and shape of
the backdrop, and determines where the backdrop is visible, where the
graphic element is visible and where one is visible through the other.
The blending step determines how the colors from the graphic element
and the backdrop interact.
Any thoughts?
--
Carlos
http://synfig.org
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