Marks the currently rendered data (if any) as invalid, and queues a redraw of the widget, ensuring that the render signal is emitted during the draw.
This is only needed when the gtk_gl_area_set_auto_render() has been called with a FALSE value. The default behaviour is to emit render on each draw.
3.16
Marks the currently rendered data (if any) as invalid, and queues a redraw of the widget, ensuring that the render signal is emitted during the draw.
This is only needed when the gtk_gl_area_set_auto_render() has been called with a FALSE value. The default behaviour is to emit render on each draw.