Il giorno ven, 18/02/2011 alle 23.58 +0100, Martin Dobias ha scritto: > The main performance killer here is painting of borders. The layer is > rendered several times faster if you set border style to "no pen".
This has no noticeable effect in my case. > Also disable anti-aliasing - that also eats a lot of time. Yes, I already didi this. > Build > spatial index to speed up rendering of small parts of the map. Right. > The clear direction is to merge threading branch to trunk. It contains > some optimizations for rendering, plus it does not freeze while > rendering and continuously updates the map. So even when working with > huge layers, it's possible to see how rendering continues and zoom/pan > to desired region of interest without having to wait until rendering > of the last map finished. Any idea about when it will be merged? Anyone working on this? What performance gain would you expect with threading? Anyway, I suspect there is something else: rendering is so much faster in other apps that it seems to me some part (Qt?) is doing something wrong here. All the best. -- http://www.faunalia.it/pc _______________________________________________ Qgis-developer mailing list Qgis-developer@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-developer