Added support for event handler for non shader path, enable alpha func
Added support for event handler for non shader path, enable alpha func


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