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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 exter-
     nally visible names.  GLX pixmaps with double-buffering  are
     supported.  However, glXSwapBuffers is ignored by these pix-
     maps.

     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

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