If @auto_render is %TRUE the #GtkGLArea::render signal will be
emitted every time the widget draws. This is the default and is
useful if drawing the widget is faster.
If @auto_render is %FALSE the data from previous rendering is kept
around and will be used for drawing the widget the next time,
unless the window is resized. In order to force a rendering
gtk_gl_area_queue_render() must be called. This mode is useful when
the scene changes seldomly, but takes a long time to redraw.
If @auto_render is %TRUE the #GtkGLArea::render signal will be emitted every time the widget draws. This is the default and is useful if drawing the widget is faster.
If @auto_render is %FALSE the data from previous rendering is kept around and will be used for drawing the widget the next time, unless the window is resized. In order to force a rendering gtk_gl_area_queue_render() must be called. This mode is useful when the scene changes seldomly, but takes a long time to redraw.