Added FireGL to prefernce list for use glGenerateMipMap
Added FireGL to prefernce list for use glGenerateMipMap


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