Important: Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct
Opengl window resize speed
bunjee last edited by
Greetings Qt enthusiasts,
On Windows since Qt 4.7.4 resizing an opengl window is slower than before.
This can be demonstrated using the Demonstrations/Boxes example.
- When you resize it with 4.7.2 the viewport gets updated immediately.
- When you resize it with 4.7.4 or 4.8 RC the viewport update is delayed.
Is it related to Opengl threading ? Is there a way to increase viewport updates during resize ?
ZapB last edited by
I honestly don't know. You could have a look for existing bug reports and report this if one doesn't already exist.
Then if you're feeling adventurous you could take a look to see if you can find out why this happens by profiling a simple application with a QGLWidget to see where it takes the time compared to 4.7.2.