Mouser cursor move around when calling qopenglwidget::update.

  • platform: imx6q cortex-a9 arm based board
    rootfs: fsl-yocto-L4.1.15_2.0.0-ga; fsl-img-qt5
    qt version: 5.6.2

    The code is very simple, a mainwindow containing a custom widget inherits qopenglwidget, and call the qopenglwidget::update 30 times per second, the strange thing is the cursor will move around randomly, if I don't call the update then everything works right. Qopenglwidget::update will call the override paintgl and I have commented it so it will do nothing. But if I run the code on my pc there is no such issue. So I think the problem might come from the rootfs on the arm board writed by qt.
    I have came up with one solution, write a render function calling paintgl, but there will be some work with qopenglcontext and qopenglframebufferobject , how to write


    Or, is there any low level example about how to use qwidget and opengl instead of using qopenglwidget?

Log in to reply

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.