Hi Andreas On Wed, Feb 26, 2014 at 9:48 PM, Andreas Neumann <[email protected]> wrote: >> Some of the slowness is understandable, some not really, e.g. why >> deactivating a layer in the legend should require time? > > that's a case where the render-cache should work. When deactivating a > layer, QGIS will just redraw all remaining visible layers. In case the > render-cache was active it would just draw the layers from the cache. > > Unfortunately the render cache introduced issues and did not work well > with certain data providers (e.g. WMS). That's why I do not use it > currently. > > Maybe Martin could comment if the idea of the render-cache is still > feasible or useful at all with the new multi-threaded renderer.
It should be safe to use render cache now in master branch, even with WMS. Paolo: make sure you have render caching turned on. Deactivating (and activating again) a layer should be immediate. Of course, if you pan the map or zoom in/out, everything will be re-rendered. Regards Martin _______________________________________________ Qgis-developer mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-developer
