[cairo] How do I use an XRender Picture as a Cairo surface?

[Bill Spitzak]

On Tue, Aug 18, 2015 at 2:24 PM, adlo <adloconwy at gmail.com> wrote:

> > On 18 Aug 2015, at 19:13, Uli Schlachter <psychon at znc.in> wrote:
> >
> > Why do you want to use a picture instead of directly using the drawable?
>
> I am writing a GTK2 program that gets previews/screenshots of all open
> windows. My program scales the previews and puts them in GtkImages.
>
> CAIRO_FILTER_FAST gives rather low-quality results, but CAIRO_FILTER_GOOD
> is rather slow.
>
> I wanted to try scaling the previews using XRender in order to find out if
> it is any better or faster compared to Cairo scaling.
>

Unfortunatly XRender is going to give the the exact same results as
CAIRO_FILTER_FAST.
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