Added an aborted try at making fullscreen work on Xinerama screen != 0

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%40500

src/video/x11/SDL_x11modes.c

@@ -535,12 +535,19 @@ int X11_GetVideoModes(_THIS)
     /* Query Xinerama extention */
     if ( SDL_NAME(XineramaQueryExtension)(SDL_Display, &i, &i) &&
          SDL_NAME(XineramaIsActive)(SDL_Display) ) {
-        /* Find out which screen is the zero'th one */
+        /* Find out which screen is the desired one */
+        int desired = 0;
         int screens;
         SDL_NAME(XineramaScreenInfo) *xinerama;
 
 #ifdef XINERAMA_DEBUG
         printf("X11 detected Xinerama:\n");
+#endif
+#if 0 /* Apparently the vidmode extension doesn't work with Xinerama */
+        const char *variable = getenv("SDL_VIDEO_X11_XINERAMA_SCREEN");
+        if ( variable ) {
+                desired = atoi(variable);
+        }
 #endif
         xinerama = SDL_NAME(XineramaQueryScreens)(SDL_Display, &screens);
         for ( i = 0; i < screens; i++ ) {
@@ -550,7 +557,7 @@ int X11_GetVideoModes(_THIS)
                 xinerama[i].width, xinerama[i].height,
                 xinerama[i].x_org, xinerama[i].y_org);
 #endif
-            if ( xinerama[i].screen_number == 0 ) {
+            if ( xinerama[i].screen_number == desired ) {
                 xinerama_x = xinerama[i].x_org;
                 xinerama_y = xinerama[i].y_org;
             }
@@ -672,7 +679,8 @@ int X11_EnterFullScreen(_THIS)
     if ( current_h > real_h ) {
         real_h = MAX(real_h, screen_h);
     }
-    XMoveResizeWindow(SDL_Display, FSwindow, 0, 0, real_w, real_h);
+    XMoveResizeWindow(SDL_Display, FSwindow,
+                      xinerama_x, xinerama_y, real_w, real_h);
     XMapRaised(SDL_Display, FSwindow);
     X11_WaitMapped(this, FSwindow);
 

src/video/x11/SDL_x11video.c

@@ -282,7 +282,8 @@ static void create_aux_windows(_THIS)
     xattr.border_pixel = 0;
     xattr.colormap = SDL_XColorMap;
 
-    FSwindow = XCreateWindow(SDL_Display, SDL_Root, 0, 0, 32, 32, 0,
+    FSwindow = XCreateWindow(SDL_Display, SDL_Root,
+                             xinerama_x, xinerama_y, 32, 32, 0,
 			     this->hidden->depth, InputOutput, SDL_Visual,
 			     CWOverrideRedirect | CWBackPixel | CWBorderPixel
 			     | CWColormap,