-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >>>>>> >>>>>>> I guess what you mean is that e.g. moving objects has a delay of around >>>>>>> 0.2 s? >>>>>>> > >> For me the delay is much longer 0.2 s. Maybe around 1s. >>>> >>>> I seem to recall some interesting blog posts on the Nokia Qt site >>>> about QGraphicsScene performance. > > Could not find anything that results in a noticeable improvement, but > while testing I figured out that the speed depends on the size. Not the > size of the scene but of the view. So the smaller the monitor, the > better/faster editing geometries works. > I still have no idea what causes this behavior.
So I finally found out what was responsible for the slowness. In some posts it was recommended to use a QGLWidget as the viewport for QGraphicsView. After doing so the speed was amazingly, however there were a lot of crashes in nouveou (open source driver for nvidia cards) therefore I switched back (after half a year, see OP ;) ) to the nvidia one. Now also without using a QGLWidget I can work fluently with on-monitor effects. So maybe I will have a look at the QGLWidget thing again after 0.7.8 is released. Btw. during playback the background frame is only updated every 200 ms because updating it every time a frameUpdated signal is received will cause the GUI to not respond anymore. But this should not be a problem as there is a button to switch to the normal monitor for preview purposes. regards till -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkx9WL4ACgkQzwEyz7QP6nSqrgCdHABs8KfKuvT1ClDScQG1Y5SF 3AYAn05+8OtHvN3AzVcNF8u4QQ8mpsmc =S54N -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ This SF.net Dev2Dev email is sponsored by: Show off your parallel programming skills. Enter the Intel(R) Threading Challenge 2010. http://p.sf.net/sfu/intel-thread-sfd _______________________________________________ Kdenlive-devel mailing list Kdenlive-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kdenlive-devel
