extern struct pipe_context *
nv10_create(struct pipe_screen *, unsigned pctx_id);
+extern struct pipe_screen *
+nv20_screen_create(struct pipe_winsys *ws, struct nouveau_winsys *);
+
+extern struct pipe_context *
+nv20_create(struct pipe_screen *, unsigned pctx_id);
+
extern struct pipe_screen *
nv30_screen_create(struct pipe_winsys *ws, struct nouveau_winsys *);