Gui updating framebuffer

22-Jul-2016 07:59

It is very simple to use: Make your class inherit from it and use the subclass like any other QWidget, except that you have the choice between using QPainter and standard Open GL rendering commands.

QOpen GLWidget provides three convenient virtual functions that you can reimplement in your subclass to perform the typical Open GL tasks: If you need to trigger a repaint from places other than paint GL() (a typical example is when using timers to animate scenes), you should call the widget's update() function to schedule an update.

So that's what I've done, but the text rendering is pretty slow.

For development and debugging purposes, a virtual framebuffer can be used, allowing Qt for Embedded Linux programs to be developed on a desktop machine, without switching between consoles and X11.Please note that the virtual framebuffer is a development tool only.No security issues have been considered in the virtual framebuffer design.The QOpen GLWindow class is a convenience subclass of QWindow to perform Open GL painting.QOpen GLWindow is an enhanced QWindow that allows easily creating windows that perform Open GL rendering using an API that is compatible with QOpen GLWidget and is similar to the legacy QGLWidget.

For development and debugging purposes, a virtual framebuffer can be used, allowing Qt for Embedded Linux programs to be developed on a desktop machine, without switching between consoles and X11.

Please note that the virtual framebuffer is a development tool only.

No security issues have been considered in the virtual framebuffer design.

The QOpen GLWindow class is a convenience subclass of QWindow to perform Open GL painting.

QOpen GLWindow is an enhanced QWindow that allows easily creating windows that perform Open GL rendering using an API that is compatible with QOpen GLWidget and is similar to the legacy QGLWidget.

See set Swap Interval() on a description of the swap interval.