<field type="FBCONFIG" name="fbconfig" />
<field type="xproto:WINDOW" name="window" />
<field type="glx:WINDOW" name="glx_window" />
<field type="FBCONFIG" name="fbconfig" />
<field type="xproto:WINDOW" name="window" />
<field type="glx:WINDOW" name="glx_window" />