http://cvs.freedesktop.org/xorg/xserver/xorg/GL/glx/glxcmds.c?r1=1.6&r2=1.7
-->
-<xcb header="glx" extension-xname="GLX" extension-name="Glx">
+<xcb header="glx" extension-xname="GLX" extension-name="Glx"
+ major-version="1" minor-version="3">
<!-- target support: 1.3 -->
<import>xproto</import>