# HG changeset patch
# User Jasper St. Pierre <jstpierre@mecheye.net>
# Date 1374382651 14400
# Node ID fc864efbc1a6d8ea2df9bca9f720a0e0ffb773f4
# Parent  30ec6dae748b4084b7a89ca71811ba8afece7157
Add support for the _NET_WM_BYPASS_COMPOSITOR hint

This hints to window managers to unredirect the window to improve
performance.

diff --git a/src/video/x11/SDL_x11window.c b/src/video/x11/SDL_x11window.c
--- a/src/video/x11/SDL_x11window.c
+++ b/src/video/x11/SDL_x11window.c
@@ -339,6 +339,8 @@
     XSizeHints *sizehints;
     XWMHints *wmhints;
     XClassHint *classhints;
+    const long _NET_WM_BYPASS_COMPOSITOR_HINT_ON = 1;
+    Atom _NET_WM_BYPASS_COMPOSITOR;
     Atom _NET_WM_WINDOW_TYPE;
     Atom _NET_WM_WINDOW_TYPE_NORMAL;
     Atom _NET_WM_PID;
@@ -532,6 +534,10 @@
                     PropModeReplace,
                     (unsigned char *)&_NET_WM_WINDOW_TYPE_NORMAL, 1);
 
+    _NET_WM_BYPASS_COMPOSITOR = XInternAtom(display, "_NET_WM_BYPASS_COMPOSITOR", False);
+    XChangeProperty(display, w, _NET_WM_BYPASS_COMPOSITOR, XA_CARDINAL, 32,
+                    PropModeReplace,
+                    (unsigned char *)&_NET_WM_BYPASS_COMPOSITOR_HINT_ON, 1);
 
     {
         Atom protocols[] = {