NAME
	  glXWaitX - complete X	execution prior	to subsequent GL calls


     C SPECIFICATION
	  void glXWaitX( void )


     DESCRIPTION
	  X rendering calls made prior to glXWaitX are guaranteed to
	  be executed before GL	rendering calls	made after glXWaitX.
	  Although the same result can be achieved using XSync,
	  glXWaitX does	not require a round trip to the	server,	and it
	  is therefore more efficient in cases where client and	server
	  are on separate machines.

	  glXWaitX is ignored if there is no current GLX context.

     NOTES
	  glXWaitX may or may not flush	the GL stream.

     ERRORS
	  GLXBadCurrentWindow is generated if the drawable associated
	  with the current context of the calling thread is a window,
	  and that window is no	longer valid.

     SEE ALSO
	  glFinish, glFlush, glXWaitGL,	XSync