Ocean demo: added code to show only supported materials.
Ocean demo: added code to show only supported materials.

vancepym/ogre,largerussiangames/ogre,nezticle/ogre,jhu-lcsr-forks/ogre,nezticle/ogre,nezticle/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,vancepym/ogre,nezticle/ogre,largerussiangames/ogre,vancepym/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,largerussiangames/ogre,vancepym/ogre,vancepym/ogre,largerussiangames/ogre