From http://www.jwz.org/xscreensaver/xscreensaver-5.35.tar.gz

[xscreensaver] / hacks / glx / companion.c

diff --git a/hacks/glx/companion.c b/hacks/glx/companion.c
index 441028e7fbbe3a6e7524cfb05a0eb2a295cc4f94..57f5277554ae88f725e49d819335ffef8278a9b0 100644 (file)
--- a/hacks/glx/companion.c
+++ b/hacks/glx/companion.c
@@ -361,6 +361,14 @@ reshape_cube (ModeInfo *mi, int width, int height)
              0.0, 0.0, 0.0,
              0.0, 1.0, 0.0);
 
+# ifdef HAVE_MOBILE    /* Keep it the same relative size when rotated. */
+  {
+    int o = (int) current_device_rotation();
+    if (o != 0 && o != 180 && o != -180)
+      glScalef (1/h, 1/h, 1/h);
+  }
+# endif
+
   glClear(GL_COLOR_BUFFER_BIT);
 }