NAME
	  glXCreateGLXPixmap - create an off-screen GLX	rendering area


     C SPECIFICATION
	  GLXPixmap glXCreateGLXPixmap(	Display	*dpy,
					XVisualInfo *vis,
					Pixmap pixmap )


     PARAMETERS
	  dpy	  Specifies the	connection to the X server.

	  vis	  Specifies the	visual that defines the	structure of
		  the rendering	area.  It is a pointer to an
		  XVisualInfo structure, not a visual ID or a pointer
		  to a Visual.

	  pixmap  Specifies the	X pixmap that will be used as the
		  front	left color buffer of the off-screen rendering
		  area.

     DESCRIPTION
	  glXCreateGLXPixmap creates an	off-screen rendering area and
	  returns its XID.  Any	GLX rendering context that was created
	  with respect to vis can be used to render into this off-
	  screen area.	Use glXMakeCurrent to associate	the rendering
	  area with a GLX rendering context.

	  The X	pixmap identified by pixmap is used as the front left
	  buffer of the	resulting off-screen rendering area.  All
	  other	buffers	specified by vis, including color buffers
	  other	than the front left buffer, are	created	without
	  externally visible names.  GLX pixmaps with double-buffering
	  are supported.  However, glXSwapBuffers is ignored by	these
	  pixmaps.

	  Some implementations may not support GLX pixmaps with	direct
	  rendering contexts.

     NOTES
	  XVisualInfo is defined in Xutil.h.  It is a structure	that
	  includes visual, visualID, screen, and depth elements.

     ERRORS
	  BadMatch is generated	if the depth of	pixmap does not	match
	  the depth value reported by core X11 for vis,	or if pixmap
	  was not created with respect to the same screen as vis.

	  BadValue is generated	if vis is not a	valid XVisualInfo
	  pointer (for example,	if a particular	GLX implementation
	  does not support this	visual).
	  BadPixmap is generated if pixmap is not a valid pixmap.

	  BadAlloc is generated	if the server cannot allocate the GLX
	  pixmap.

     SEE ALSO
	  glXCreateContext, glXIsDirect, glXMakeCurrent