Hi! 2010/12/14 Juha Turunen <turu...@iki.fi>: > On Tue, Dec 14, 2010 at 1:51 PM, Cornelius Hald <h...@icandy.de> wrote: >> As far as I know Symbian automatically uses OpenGL or OpenVG if >> available. You have to #ifdef this part of the code :( You might also >> want to have a look at this blog: >> http://thpmaemo.blogspot.com/2010/10/qt-write-once-ifdef-everywhere.html > > I don't think it's automatic. You need to tell the app which graphics > backend to use (OpenVG for accelerated Symbian^3 devices of course). > What is automatic is that if you define the graphics system, you don't > need to manually use a specific viewport widget (QGlWidget) and it > will automatically revert to raster if OpenVG isn't available. > > All you need to do is call QApplication::setGraphicsSystem("openvg") > _before_ you construct your QApplication object.
If it automatically reverts to raster, why does it not choose the fastest backend available on each platform? (i.e. OpenVG on Symbian^3) If it does not do that by default (I don't know - that was just an assumption based on the on-device speed of the app I wrote), shouldn't it do that by default? In which component of Qt should I file a feature request for that (QGraphicsView?). How would a cross-platform "make it fast" code snippet look like that gives the best result on both Maemo and Symbian^3 as well as on Desktop platforms and future MeeGo devices? Thanks, Thomas _______________________________________________ Qt-qml mailing list Qt-qml@trolltech.com http://lists.trolltech.com/mailman/listinfo/qt-qml
