[Qgis-developer] QGIS Multi-threaded Rendering

[G. Allegri]

> * predictive / off screen  rendering of 3x3 canvas dimensions after the
> initial render so that any pan is near instantaneous (and would trigger a
> new off-screen render)
> * on zoom, resample first then over render the resampled image (like open
> layers and other web toolkits do so you see a resampled version of the old
> render which gets overpainted as the new render comes in)
>

That would be really good to keep room for this improvement. This is how
maps on the web generally behave, and it's a behaviour that many of my
students and customers ask about at their first impact with QGIS.

giovanni



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-- 
Giovanni Allegri
http://about.me/giovanniallegri
blog: http://blog.spaziogis.it
GEO+ geomatica in Italia http://bit.ly/GEOplus
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