I'm used to using the features in gtkglext http://projects.gnome.org/gtkglext/ to use OpenGL 2.0 to draw 3D scenes in gtk+ windows. E.g. http://www.peteronion.org.uk/Elliott/drawers2.jpg
I've done some googling but I can't find anything that looks like an equivalent for OpenGl ES. Is anyone working on something like gtkglext ?