check for damage and render extensions if going to use composite. require them for it. also include the cflags/libs. and only run the xcomposite stuff so far when the server supports it

1 files changed, 6 insertions, 4 deletions

diff --git a/openbox/screen.c b/openbox/screen.c
index d5a51941..1ef08075 100644
--- a/openbox/screen.c
+++ b/openbox/screen.c
@@ -365,10 +365,12 @@ void screen_startup(gboolean reconfig)
     }
 
 #ifdef USE_XCOMPOSITE
-    /* Redirect window contents to offscreen pixmaps */
-    XCompositeRedirectSubwindows(ob_display,
-                                 RootWindow(ob_display, ob_screen),
-                                 CompositeRedirectAutomatic);
+    if (extensions_comp) {
+        /* Redirect window contents to offscreen pixmaps */
+        XCompositeRedirectSubwindows(ob_display,
+                                     RootWindow(ob_display, ob_screen),
+                                     CompositeRedirectAutomatic);
+    }
 #endif
 
     /* get the initial size */