Added support for hardware generated mipmaps into Textre2D::copy*() methods.
Added support for hardware generated mipmaps into Textre2D::copy*() methods.


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