temporarily link agains OpenGL

Change-Id: I330c9e4f0f1a1ebf0e236de9cfabdf9dc65121cf
add camera control

Change-Id: Ie641a916f62e80f390514f91de23873364df89a6
clear the container to be safe

Change-Id: Ifa90e2839898079da4dc09e55feba6626e6a8fa8