Hi all,
I was listening in on the last irc meeting and caught an aftermeeting
mentioning about bad Qt4 performance. I offered an article and a possible
workaround I found recently, in case people are not aware of it, and was
asked to bring it to attention to other developers also, so here goes:
I'm suffering bad graphical performance in Qt4 and PyQt4 applications and
searched for solutions. I found a post on
nokia.com [1] that mentions a
command line switch that might help.
In short: adding "-graphicssystem raster" to my Qt4 applications' command
line
improved performance drastically for me. There's also a method to set it
programmatically, and an environment variable [2].
[1]
http://labs.qt.nokia.com/2008/10/22/so-long-and-thanks-for-the-blit/
[2]
http://doc.qt.nokia.com/4.7/qapplication.html#setGraphicsSystem
Thanks and much regards,
Sanne