Add reporting of damage by DRI drivers when the extension support is available.

With this, tools like ximagesrc in gstreamer correctly see updates from GL
rendering.  Support requires that the Xdamage library be current (but will be
disabled if not present) plus a new X Server with support for the new
XDamagePost request.  libGL now has a new interface version, and also links
against libXdamage and libXfixes to support it, but backwards compatibility
is retained.

Currently, all drivers report damage at SwapBuffers time through common code --
front buffer rendering doesn't result in damage being reported.  Also, the
damage is against the root window, as our drivers don't yet render to backing
store when they should (composited environments).

1 files changed, 2 insertions, 1 deletions

diff --git a/src/glx/x11/glxcmds.c b/src/glx/x11/glxcmds.c
index 9d1bb2a0b55..f52b71ffcd2 100644
--- a/src/glx/x11/glxcmds.c
+++ b/src/glx/x11/glxcmds.c
@@ -2883,8 +2883,9 @@ int __glXGetInternalVersion(void)
      * 20050727 - Gut all the old interfaces.  This breaks compatability with
      *            any DRI driver built to any previous version.
      * 20060314 - Added support for GLX_MESA_copy_sub_buffer.
+     * 20070105 - Added support for damage reporting.
      */
-    return 20060314;
+    return 20070105;
 }