[cairo] drawing tons of circles

[Mami]

> That still converts the path to a mask multiple times. The trick, if you
> are willing to sacrifice sub-pixel accuracy (and there are times when
> that is desired or mitigated by other means) is to render the circle to
> a 'large' alpha-only similar surface:
>

thanks a lot,

that is definately faster. I need to play a bit to correctly position the
circles but I seem to be on track.

br,
/mami
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