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

[xscreensaver] / hacks / glx / glknots.c

diff --git a/hacks/glx/glknots.c b/hacks/glx/glknots.c
index 36ff1983daca7773483822ebe53ff5fda1293bd6..8dd63728e8ee8650fb568ddef501e76b4a302314 100644 (file)
--- a/hacks/glx/glknots.c
+++ b/hacks/glx/glknots.c
@@ -16,6 +16,7 @@
 #define DEFAULTS       "*delay:        30000       \n" \
                        "*showFPS:      False       \n" \
                        "*wireframe:    False       \n" \
+                       "*suppressRotationAnimation: True\n" \
 
 # define refresh_knot 0
 # define release_knot 0
@@ -190,6 +191,14 @@ reshape_knot (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);
 }