Hi John, thanks for your reply... At the end I fixed the problem simply performing my painting from within a QGLWidget instead of a standard QWidget.
I don't know what is the root cause of the problem... but probably there's something wrong in QWidget when it works on EGLFS platform on AM335x video driver. Regards, /Morix Il giorno giovedì 27 marzo 2014 05:04:29 UTC+1, john3909 ha scritto: > > > From: <mori...@gmail.com <javascript:>> > Reply-To: <beagl...@googlegroups.com <javascript:>> > Date: Wednesday, March 26, 2014 at 6:23 AM > To: <beagl...@googlegroups.com <javascript:>> > Subject: [beagleboard] QT5 eglfs problem on embedded linux (TI am355x evm > starter kit) > > Hello everybody, > I’ve just cross-compiled QT 5.2.1 for ARM and I am using it on a TI > AM335x EVM (Starter Kit) board. > > I’de like to use the eglfs platform, but unluckily it shows some artifacts > on the screen… > > I just made a simple program for showing the problem and captured some > photos of my screen. The program basically draws a set of vertical black > and white lines (alternated). > > If I run QT on platform linuxfb (that is I launch my program passing > “-platform linuxfb” on command line) then the software works fine… Here is > a photo of my screen: > http://it.tinypic.com/r/2lks9ag/8 > > If instead I run QT on platform eglfs (that is I launch my program passing > “-platform eglfs” on command line) then I have some artifacts near the > center of screen (it seems that some vertical lines are “missing” or > “swapped”)… Here are two photos of my screen: > http://it.tinypic.com/r/2i6m4xc/8 > http://it.tinypic.com/r/2qur9r8/8 > > Any idea about that? > > A few months ago, I managed to get QT5.1.1 running on Robert Nelson’s > V3.12 kernel and it worked fine. I was able to run the 3D demo apps and the > performance was very good (~30fps). I was using EGLFS platform > > Regards, > John > > Furthermor it seems that on the same board QT 5.2.1 is slower than QT > 4.8.x (using QWS)… how is it possible? Is there some optimization that > can be turned on while compiling QT 5.x? > > Regards, > /Morix > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to beagleboard...@googlegroups.com <javascript:>. > For more options, visit https://groups.google.com/d/optout. > > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
