From http://www.jwz.org/xscreensaver/xscreensaver-5.20.tar.gz

[xscreensaver] / hacks / glx / extrusion.c

diff --git a/hacks/glx/extrusion.c b/hacks/glx/extrusion.c
index 6637512f6b20dc55b66b4f13993f38c3132ccd13..b05c32983ef2ec52c1e0afe327ba38ed074f5217 100644 (file)
--- a/hacks/glx/extrusion.c
+++ b/hacks/glx/extrusion.c
@@ -438,11 +438,14 @@ initializeGL(ModeInfo *mi, GLsizei width, GLsizei height)
   glViewport( 0, 0, width, height ); 
 
   glEnable(GL_DEPTH_TEST);
-  glClearColor(0,0,0,0);
   glDisable (GL_CULL_FACE);
   glLightModeli (GL_LIGHT_MODEL_TWO_SIDE, True);
   glShadeModel(GL_SMOOTH);
 
+# ifdef HAVE_JWZGLES /* #### glPolygonMode other than GL_FILL unimplemented */
+  MI_IS_WIREFRAME(mi) = 0;
+# endif
+
   if (do_light)
        SetupLight();
   if (MI_IS_WIREFRAME(mi)) {
@@ -477,7 +480,9 @@ extrusion_handle_event (ModeInfo *mi, XEvent *event)
 
   if (event->xany.type == ButtonPress &&
       (event->xbutton.button == Button4 ||
-       event->xbutton.button == Button5))
+       event->xbutton.button == Button5 ||
+       event->xbutton.button == Button6 ||
+       event->xbutton.button == Button7))
     {
       gltrackball_mousewheel (gp->trackball, event->xbutton.button, 10,
                               !!event->xbutton.state);