If auto_render is true the gtk.glarea.GLArea.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.glarea.GLArea.queueRender must be called. This mode is
useful when the scene changes seldom, but takes a long time to redraw.
Sets whether the gtk.glarea.GLArea is in auto render mode.
If auto_render is true the gtk.glarea.GLArea.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.glarea.GLArea.queueRender must be called. This mode is useful when the scene changes seldom, but takes a long time to redraw.