From http://www.jwz.org/xscreensaver/xscreensaver-5.18.tar.gz

[xscreensaver] / hacks / glx / lament.c

diff --git a/hacks/glx/lament.c b/hacks/glx/lament.c
index f0526cc5fed3e5a170abdbe0a936a21a9da540b0..ab4bf83e1109ca7d472c34538b13459a8202f401 100644 (file)
--- a/hacks/glx/lament.c
+++ b/hacks/glx/lament.c
@@ -1422,7 +1422,10 @@ draw(ModeInfo *mi)
 
   glPushMatrix();
 
+  /* Do it twice because we don't track the device's orientation. */
+  glRotatef( current_device_rotation(), 0, 0, 1);
   gltrackball_rotate (lc->trackball);
+  glRotatef(-current_device_rotation(), 0, 0, 1);
 
   /* Make into the screen be +Y right be +X, and up be +Z. */
   glRotatef(-90.0, 1.0, 0.0, 0.0);