Hi Krenar, We have noticed a few X11 issues with scenegraph, but overall performance is always superior to QML 1.
A few things to test: 1. use qmlscene, not qmlviewer 2. disable compiz. We have experienced it not playing nice with scene graph 3. Make sure you enable beam sync in the nvidia control panel. (nvidia-settings I think the tool is called) If none of these help, then I would like to see the code you are running. cheers, Gunnar On Oct 25, 2011, at 8:51 PM, ext Krenar Qehaja wrote: > Hi everyone, > > First of all I hope I'm posting to the correct mailing list, as this is a > performance issue regarding Scene Graph. > > I'm a vivid fan of Qt5 and I build it in daily basis. > > The performance of Scene Graph on my machine is horrible. I don't > know the frame rate (as I don't know how measure it) but you can > tell that it's far from being good. On the other hand, QML1 apps > perform much better, maybe 45-50 fps (still not perfect but much > better). > > I also tried to change the engine to Graphics View by using > --original-qml and --original-qml-raster flags, but still didn't notice > any change. > > I'm using Nvidia's proprietary drivers (v.270.41.06) and Compiz runs > very smooth, and so do QtQuick3D apps. > > So my question is: is the performance related to my gfx drivers (and > is there any chance to fix it) or is it because of the quality of code > that is probably being worked on (seems unlikely to me, because > of the video presentations I've seen, apps seemed to run quite good)? > > P.S. Is there a way to measure the frame rate of QML (1 and 2) and > QtQuick3D apps? > > Regards, > Krenar > _______________________________________________ > Qt5-feedback mailing list > [email protected] > http://lists.qt.nokia.com/mailman/listinfo/qt5-feedback _______________________________________________ Qt5-feedback mailing list [email protected] http://lists.qt.nokia.com/mailman/listinfo/qt5-feedback
