I make my View + Scene and I add my QML Engine. And I do use a parentless fullscreen QGraphicsView. But I'll definitely try out this extra flag ;)
Thanks for the Hint Ivan On 28 June 2010 14:10, <[email protected]> wrote: > > > I can testify. > > Same animations and transformations done with QML, with OpenGL-enabled > > QGraphicsView go MUCH FASTER (particularly on Device). > > If your application is a full-screen one and you run it with the qmlviewer, > then > make sure you specify the -frameless flag (in addition to the -fullscreen). > This > makes a huge difference to performance when running on N900. > > > Cheers > Mathias > > ________________________________________ > From: [email protected] [[email protected]] On > Behalf Of ext Ivan De Marino [[email protected]] > Sent: Friday, June 25, 2010 2:17 PM > To: Allison Warwick (Nokia-D-Qt/Brisbane) > Cc: [email protected] > Subject: Re: [Qt-qml] hardware acceleration and qml > > I can testify. > Same animations and transformations done with QML, with OpenGL-enabled > QGraphicsView go MUCH FASTER (particularly on Device). > But there are few drawbacks: > - You need to have the entire View redrawn entirely for good quality (but > that's ok: you are using OpenGL after all) > - Font Anti-aliasing sucks and gets worse if you apply transformations to > the Text > > On 23 June 2010 00:52, <[email protected]<mailto: > [email protected]>> wrote: > > I'd like to know more about the support for hardware acceleration in > > qml. I remember an overview focused on it but in the last snapshot > > documentation I can't find it. Is there a reason? Where I can find the > > supported platforms? > > QML builds directly upon QGraphicsView, which in turn builds upon QPainter, > which in turn builds upon QPaintEngine (and the internal QGraphicsSystem > classes), which have various hardware accelerated implementations. > > -- > Warwick > > _______________________________________________ > Qt-qml mailing list > [email protected]<mailto:[email protected]> > http://lists.trolltech.com/mailman/listinfo/qt-qml > > > > -- > Ivan De Marino | Software Engineer | France Telecom R&D UK - Orange Labs > w. +44 20 8849 5806 | m. +44 7515 955 861 | m. +44 7974 156 216 > ivan[dot]demarino[at]orange-ftgroup.com<http://orange-ftgroup.com> | > ivan[dot]de[dot]marino[at]gmail[dot]com > www.detronizator.org<http://www.detronizator.org> | > www.linkedin.com/in/ivandemarino<http://www.linkedin.com/in/ivandemarino> > -- Ivan De Marino | Software Engineer | France Telecom R&D UK - Orange Labs w. +44 20 8849 5806 | m. +44 7515 955 861 | m. +44 7974 156 216 ivan[dot]demarino[at]orange-ftgroup.com | ivan[dot]de[dot]marino[at]gmail[dot]com www.detronizator.org | www.linkedin.com/in/ivandemarino
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