From http://www.jwz.org/xscreensaver/xscreensaver-5.38.tar.gz

[xscreensaver] / hacks / glx / timetunnel.c

diff --git a/hacks/glx/timetunnel.c b/hacks/glx/timetunnel.c
index 1dd5065ddc86f1a5d479defd90fbdca10daf3fc0..106f6a64c588b98a14950530a8545cdf716ff624 100644 (file)
--- a/hacks/glx/timetunnel.c
+++ b/hacks/glx/timetunnel.c
@@ -23,7 +23,7 @@
 
 
 
-# define refresh_tunnel 0
+# define free_tunnel 0
 # define release_tunnel 0
 #undef countof
 #define countof(x) (sizeof((x))/sizeof((*x)))
@@ -352,8 +352,15 @@ ENTRYPOINT void
 reshape_tunnel (ModeInfo *mi, int width, int height)
 {
   GLfloat h = (GLfloat) height / (GLfloat) width;
+  int y = 0;
 
-  glViewport (0, 0, (GLint) width, (GLint) height);
+  if (width > height * 5) {   /* tiny window: show middle */
+    height = width * 9/16;
+    y = -height/2;
+    h = height / (GLfloat) width;
+  }
+
+  glViewport (0, y, (GLint) width, (GLint) height);
 
   glMatrixMode(GL_PROJECTION);
   glLoadIdentity();
@@ -1031,7 +1038,7 @@ init_tunnel (ModeInfo *mi)
   wire = 0;
 # endif
 
-  MI_INIT (mi, tconf, NULL);
+  MI_INIT (mi, tconf);
 
   tc = &tconf[MI_SCREEN(mi)];