Marks the currently rendered data (if any) as invalid, and queues a redraw of the widget.
This ensures that the gtk.glarea.GLArea.render signal is emitted during the draw.
This is only needed when gtk.glarea.GLArea.setAutoRender has been called with a false value. The default behaviour is to emit gtk.glarea.GLArea.render on each draw.
Marks the currently rendered data (if any) as invalid, and queues a redraw of the widget.
This ensures that the gtk.glarea.GLArea.render signal is emitted during the draw.
This is only needed when gtk.glarea.GLArea.setAutoRender has been called with a false value. The default behaviour is to emit gtk.glarea.GLArea.render on each draw.