Re: [Gegl-developer] Compositors

[Michael Henning <mikehenning darkrefraction com>]

Note the comment at the top of that file:

/* SVG rendering modes; see:
 *     http://www.w3.org/TR/SVG12/rendering.html
 *     http://www.w3.org/TR/2004/WD-SVG12-20041027/rendering.html#comp-op-prop
 *
 *     aA = aux(src) alpha      aB = in(dst) alpha      aD = out alpha
 *     cA = aux(src) colour     cB = in(dst) colour     cD = out colour
 */

It's also probably useful to note that these operations are generated
by svg-12-blend.rb, so you might be better off looking there for some
of the code.

-- drawoc

On Sat, Jul 7, 2012 at 8:20 PM, Calculemus <calculemus1988 gmail com> wrote:
> What source is used for the math? I see the original Adobe
> reference uses different math for the compositors like
> soft-light. Not sure which math to use, the one you guys have
> in GEGL or the one in the Adobe reference, which is used in
> Photoshop and After Effects, etc.
>
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