[cairo] Scrolling/Copying

[Tim Teulings]

Hello!

> That's a longstanding bug.  The current Render implementation doesn't
> handle overlapping source/dest at all.  Same for the software drawing
> code in cairo itself.
> 
> We can work around this particular bug by using core rendering for this
> particular case; it would have the advantage of better performance on
> most X servers.  There is similar code in the cairo drawing code we
> could use for the software case.

Ah sad story :-/ The (temporary) fix would be nice - or is there a
workaround I can implement in my application? Would the fix be
integrated in the next cairo version?

Nevertheless, can someone still explain me the to coords params to the
cairo_set_source_surface method?

-- 
Gruß...
       Tim.