Clip lines at "large" clipping box.
(Temporary) use multiple textures.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25524 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
(Temporary -- REMOVE) use multiple textures.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@25525 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e