skeleton bounding boxes: add hasShadowBuffer() check because Ogre always sets the write only flag in that case
skeleton bounding boxes: add hasShadowBuffer() check because Ogre always sets the write only flag in that case

paroj/ogre,paroj/ogre,RealityFactory/ogre,RealityFactory/ogre,paroj/ogre,OGRECave/ogre,RealityFactory/ogre,OGRECave/ogre,paroj/ogre,paroj/ogre,OGRECave/ogre,OGRECave/ogre,OGRECave/ogre,RealityFactory/ogre,RealityFactory/ogre