[cairo-bugs] [Bug 69796] HiDPI scaling not working with quartz cairo_surface_create_similar() implementation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69796

--- Comment #3 from Brion Vibber <brion at pobox.com> ---
(In reply to Emmanuele Bassi from comment #2)
> looking around at various sources, it seems that we should do:
> 
>   CGContextScaleCTM (cgc, scaleFactor, scaleFactor);
> 
> when creating the CGBitmapContext inside cairo_quartz_surface_create(),
> where scaleFactor is the device scale factor for the surface.

Tried that manually, it scales up the rendering size but when it gets drawn
it's double-sized (so most everything's offscreen in gdkgears demo). Still
needs something else...

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