From http://www.jwz.org/xscreensaver/xscreensaver-5.30.tar.gz

[xscreensaver] / hacks / glx / cubestorm.c

diff --git a/hacks/glx/cubestorm.c b/hacks/glx/cubestorm.c
index 09a0ff2d594b792bdc508dc7eee4d1525b85afea..b5bba46ed6d1f97ccb7d6b02735bd09445b6b2a0 100644 (file)
--- a/hacks/glx/cubestorm.c
+++ b/hacks/glx/cubestorm.c
@@ -1,4 +1,4 @@
-/* cubestorm, Copyright (c) 2003, 2004 Jamie Zawinski <jwz@jwz.org>
+/* cubestorm, Copyright (c) 2003-2014 Jamie Zawinski <jwz@jwz.org>
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
  * documentation for any purpose is hereby granted without fee, provided that
@@ -34,6 +34,7 @@
 #define DEF_SPEED       "1.0"
 #define DEF_THICKNESS   "0.06"
 #define DEF_COUNT       "4"
+#define DEF_DBUF        "False"
 
 typedef struct {
   rotator *rot;
@@ -61,6 +62,7 @@ static Bool do_spin;
 static Bool do_wander;
 static GLfloat speed;
 static GLfloat thickness;
+static Bool dbuf_p;
 
 static XrmOptionDescRec opts[] = {
   { "-spin",   ".spin",   XrmoptionNoArg, "True" },
@@ -68,7 +70,9 @@ static XrmOptionDescRec opts[] = {
   { "-wander", ".wander", XrmoptionNoArg, "True" },
   { "+wander", ".wander", XrmoptionNoArg, "False" },
   { "-speed",  ".speed",  XrmoptionSepArg, 0 },
-  { "-thickness", ".thickness",  XrmoptionSepArg, 0 },
+  { "-db",     ".doubleBuffer", XrmoptionNoArg, "True"},
+  { "+db",     ".doubleBuffer", XrmoptionNoArg, "False"},
+  { "-thickness", ".thickness", XrmoptionSepArg, 0 },
 };
 
 static argtype vars[] = {
@@ -76,6 +80,7 @@ static argtype vars[] = {
   {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
   {&speed,     "speed",  "Speed",  DEF_SPEED,  t_Float},
   {&thickness, "thickness", "Thickness",  DEF_THICKNESS,  t_Float},
+  {&dbuf_p, "doubleBuffer", "DoubleBuffer", DEF_DBUF, t_Bool},
 };
 
 ENTRYPOINT ModeSpecOpt cube_opts = {countof(opts), opts, countof(vars), vars, NULL};
@@ -178,37 +183,10 @@ cube_handle_event (ModeInfo *mi, XEvent *event)
 {
   cube_configuration *bp = &bps[MI_SCREEN(mi)];
 
-  if (event->xany.type == ButtonPress &&
-      event->xbutton.button == Button1)
-    {
-      bp->button_down_p = True;
-      gltrackball_start (bp->trackball,
-                         event->xbutton.x, event->xbutton.y,
-                         MI_WIDTH (mi), MI_HEIGHT (mi));
-      return True;
-    }
-  else if (event->xany.type == ButtonRelease &&
-           event->xbutton.button == Button1)
-    {
-      bp->button_down_p = False;
-      return True;
-    }
-  else if (event->xany.type == ButtonPress &&
-           (event->xbutton.button == Button4 ||
-            event->xbutton.button == Button5))
-    {
-      gltrackball_mousewheel (bp->trackball, event->xbutton.button, 10,
-                              !!event->xbutton.state);
-      return True;
-    }
-  else if (event->xany.type == MotionNotify &&
-           bp->button_down_p)
-    {
-      gltrackball_track (bp->trackball,
-                         event->xmotion.x, event->xmotion.y,
-                         MI_WIDTH (mi), MI_HEIGHT (mi));
-      return True;
-    }
+  if (gltrackball_event_handler (event, bp->trackball,
+                                 MI_WIDTH (mi), MI_HEIGHT (mi),
+                                 &bp->button_down_p))
+    return True;
   else if (event->xany.type == KeyPress)
     {
       KeySym keysym;
@@ -219,11 +197,14 @@ cube_handle_event (ModeInfo *mi, XEvent *event)
           glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
           return True;
         }
-      else if (c == '\r' || c == '\n')
-        {
-          new_cube_colors (mi);
-          return True;
-        }
+      else if (screenhack_event_helper (MI_DISPLAY(mi), MI_WINDOW(mi), event))
+        goto DEF;
+    }
+  else if (screenhack_event_helper (MI_DISPLAY(mi), MI_WINDOW(mi), event))
+    {
+    DEF:
+      new_cube_colors (mi);
+      return True;
     }
   return False;
 }
@@ -243,17 +224,19 @@ init_cube (ModeInfo *mi)
       fprintf(stderr, "%s: out of memory\n", progname);
       exit(1);
     }
-
-    bp = &bps[MI_SCREEN(mi)];
   }
 
+# ifdef HAVE_JWZGLES
+  dbuf_p = True;
+# endif
+
   bp = &bps[MI_SCREEN(mi)];
 
   bp->glx_context = init_GL(mi);
 
   if (MI_COUNT(mi) <= 0) MI_COUNT(mi) = 1;
 
-  bp->trackball = gltrackball_init ();
+  bp->trackball = gltrackball_init (True);
   bp->subcubes = (subcube *) calloc (MI_COUNT(mi), sizeof(subcube));
   for (i = 0; i < MI_COUNT(mi); i++)
     {
@@ -308,6 +291,7 @@ init_cube (ModeInfo *mi)
   draw_faces (mi);
   glEndList ();
 
+  glDrawBuffer(dbuf_p ? GL_BACK : GL_FRONT);
   glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 }
 
@@ -410,7 +394,8 @@ draw_cube (ModeInfo *mi)
   if (mi->fps_p) do_fps (mi);
   glFinish();
 
-  glXSwapBuffers(dpy, window);
+  if (dbuf_p)
+    glXSwapBuffers(dpy, window);
 }
 
 XSCREENSAVER_MODULE_2 ("CubeStorm", cubestorm, cube)