Re: Compositing math in SVG

On Sun, Jul 22, 2012 at 10:03 AM, Calculemus <calculemus1988@gmail.com>wrote:

> Ah, sorry Rik I am still confused as hell.
>
> Ok, so I need first to compute this:
>
> (r,g,b) = A*aa*(1-ba) + B*ba*(1-aa) + aa*ba*Blend(A, B),
>
> then compute alpha,
>
> And then, do this:
>
> (r,g,b) + (1-alpha)*(1,1,1)
>
> I am probably wrong?
>

No.
The matting with white happens at the way end and on the entire page after
all compositing is done. You don't do it for every compositing operation.

Rik