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

[xscreensaver] / hacks / glx / raverhoop.c

diff --git a/hacks/glx/raverhoop.c b/hacks/glx/raverhoop.c
index 71d2c8d003fa492523893e06c4bf22f1693f58e3..5cf35f7fccf6f0f91eebb4b254ecf3cbf863cfe7 100644 (file)
--- a/hacks/glx/raverhoop.c
+++ b/hacks/glx/raverhoop.c
@@ -16,7 +16,7 @@
                        "*showFPS:      False       \n" \
                        "*wireframe:    False       \n" \
 
-# define refresh_hoop 0
+# define free_hoop 0
 # define release_hoop 0
 #undef countof
 #define countof(x) (sizeof((x))/sizeof((*x)))
@@ -591,8 +591,15 @@ ENTRYPOINT void
 reshape_hoop (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();
@@ -649,7 +656,7 @@ init_hoop (ModeInfo *mi)
   hoop_configuration *bp;
   int wire = MI_IS_WIREFRAME(mi);
 
-  MI_INIT (mi, bps, NULL);
+  MI_INIT (mi, bps);
 
   bp = &bps[MI_SCREEN(mi)];