From http://www.jwz.org/xscreensaver/xscreensaver-5.24.tar.gz

[xscreensaver] / hacks / glx / glknots.c

diff --git a/hacks/glx/glknots.c b/hacks/glx/glknots.c
index c02e16cac44a12eba5fe1018768e4848fd87d47c..6bf5ccd95df246d56f6eb9dca29dcfdbf1db0f10 100644 (file)
--- a/hacks/glx/glknots.c
+++ b/hacks/glx/glknots.c
@@ -279,8 +279,6 @@ init_knot (ModeInfo *mi)
       fprintf(stderr, "%s: out of memory\n", progname);
       exit(1);
     }
-
-    bp = &bps[MI_SCREEN(mi)];
   }
 
   bp = &bps[MI_SCREEN(mi)];
@@ -418,7 +416,10 @@ draw_knot (ModeInfo *mi)
                  (y - 0.5) * 8,
                  (z - 0.5) * 15);
 
+    /* Do it twice because we don't track the device's orientation. */
+    glRotatef( current_device_rotation(), 0, 0, 1);
     gltrackball_rotate (bp->trackball);
+    glRotatef(-current_device_rotation(), 0, 0, 1);
 
     get_rotation (bp->rot, &x, &y, &z, !bp->button_down_p);