From http://www.jwz.org/xscreensaver/xscreensaver-5.27.tar.gz

[xscreensaver] / OSX / jwxyz.h

diff --git a/OSX/jwxyz.h b/OSX/jwxyz.h
index f6637e2c7dce3f1efe92f025edc0de387d6382e6..c8530da87f350ca379693703e76d825d6166cfaa 100644 (file)
--- a/OSX/jwxyz.h
+++ b/OSX/jwxyz.h
@@ -449,6 +449,7 @@ extern int has_writable_cells (Screen *, Visual *);
 extern int visual_depth (Screen *, Visual *);
 extern int visual_cells (Screen *, Visual *);
 extern int visual_class (Screen *, Visual *);
+extern int get_bits_per_pixel (Display *, int);
 
 // also declared in utils/grabclient.h
 extern Bool use_subwindow_mode_p (Screen *, Window);