[SoC] QGIS on steroids - week #2

[Martin Dobias]

Hi all,

This week I've implemented the mechanism to render map layers in
separate threads, so that multiple processors/cores can be used for
the rendering. On my dual-core test machine, I was able to get close
to the ideal 2x speed up.

For the next week, I plan to improve the rendering and caching code.
Then I'd like to start with next target which will take few weeks - to
enable the rendering to happen in worker thread and GUI will not be
blocked while rendering.

More verbose report is available here:
http://www.qgis.org/wiki/QGIS_on_steroids_GSoC_2010

Cheers
Martin