+extern void
+_tnl_need_dlist_norm_lengths( GLcontext *ctx, GLboolean flag );
+
+extern void
+_tnl_isolate_materials( GLcontext *ctx, GLboolean flag );
+
+
+/* Control whether T&L does per-vertex fog
+ */
+extern void
+_tnl_allow_vertex_fog( GLcontext *ctx, GLboolean value );
+
+extern void
+_tnl_allow_pixel_fog( GLcontext *ctx, GLboolean value );
+
+