Added support for 32bit depth buffer
Added support for 32bit depth buffer


tomasthoresen/osg,marchelbling/osg,openscenegraph/osg,tomasthoresen/osg,jtorresfabra/osg,jtorresfabra/osg,scrawl/osg,scrawl/osg,openscenegraph/osg,artoolkit/osg,artoolkit/osg,jtorresfabra/osg,scrawl/osg,openscenegraph/osg,marchelbling/osg,tomasthoresen/osg,marchelbling/osg,artoolkit/osg,artoolkit/osg,scrawl/osg,jtorresfabra/osg,marchelbling/osg,openscenegraph/osg,tomasthoresen/osg