I saw in your small example that you use "updateGL()", I suggest you to change it to "update()".
It may help the performance on Qt5. Renaud 2014-11-20 11:25 GMT+01:00 Dov Grobgeld <dov.grobg...@gmail.com>: > I created a small (but perhaps not small enough?) example to illustrate > the problem: > > See: https://github.com/dov/QtGLProb > > Please test it under the following conditions to see the problem: > > 1. "qmake-qt4; make; ./debug/ModelViewer" > 2. "make clean; qmake-qt5; make; ./debug/ModelViewer" > 3. "env vblank_mode=0 ./debug/ModelViewer" > > Case 3 eliminates the problem for small window sizes, but when enlarging > the window to the full screen, the same lagging behaviour as in case 2 is > experienced. > > Regards, > Dov > > > On Thu, Nov 20, 2014 at 10:37 AM, R. Reucher <rene.reuc...@batcom-it.net> > wrote: > >> On Thursday 20 November 2014 10:13:26 Dov Grobgeld wrote: >> >> > Will it help if I create a minimum program reproducing the problem? >> >> I can't comment on your actual problem, but yes, this is definitely the >> way to go... >> >> _______________________________________________ >> Development mailing list >> Development@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/development >> >> > > _______________________________________________ > Development mailing list > Development@qt-project.org > http://lists.qt-project.org/mailman/listinfo/development > >
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