GLXFBConfig confi )

PARAMETERS
       dpy    Specifies the connection to the X server.

       confi  Specifies a GLXFBConfig structure with the desired attributes for
              the window.

       _param3
              Specifies a list of attribute value pairs, which must  be  termi‐
              nated    with    None,   or   NULL.   Accepted   attributes   are
              GLX_PBUFFER_WIDTH,  GLX_PBUFFER_HEIGHT,   GLX_PRESERVED_CONTENTS,
              and GLX_LARGEST_PBUFFER.

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

       The accepted attributes for a GLXPbuffer are:

       GLX_PBUFFER_WIDTH     Specify the pixel width  of  the  requested  GLXP‐
                             buffer. The default value is 0.

       GLX_PBUFFER_HEIGHT    Specify  the  pixel  height of the requested GLXP‐
                             buffer. The default value is 0.

       GLX_LARGEST_PBUFFER   Specify to obtain the largest available pixel buf‐
                             fer,   if  the  requested  allocation  would  have
                             failed. The width  and  height  of  the  allocated
                             pixel  buffer  will  never  exceed  the  specified
                             GLX_PBUFFER_WIDTH or  GLX_PBUFFER_HEIGHT,  respec‐
                             tively.   Use glXQueryDrawable to retrieve the di‐
                             mensions of the allocated pixel  buffer.  The  de‐
                             fault value is False.

       GLX_PRESERVED_CONTENTS
                             Specify if the contents of the pixel buffer should
                             be preserved when a resource conflict occurs.   If
                             set to False, the contents of the pixel buffer may
                             be lost at any time.  If set to True, or not spec‐
                             ified  in  _param3, then the contents of the pixel
                             buffer will be preserved (most likely  by  copying
                             the  contents  into  main  system  memory from the
                             frame buffer).  In either  case,  the  client  can
                             register  (using  glXSelectEvent, to receive pixel
                             buffer clobber events which are generated when the
                             pbuffer contents have been preserved or damaged.

       GLXPbuffers  contain the color and ancillary buffers specified by confi.
       It is possible to create a pixel buffer  with  back  buffers,  and  swap
       the requested GLXPbuffer.

       GLXBadFBConfig is generated if confi is not a valid GLXFBConfig.

       BadMatch  is generated if confi does not support rendering to pixel buf‐
       fers. (e.g., GLX_DRAWABLE_TYPE does not contain GLX_PBUFFER_BIT).

SEE ALSO
       glXChooseFBConfig,       glXCreatePbuffer,        glXMakeContextCurrent,
       glXSelectEvent

                                                           GLXCREATEPBUFFER(3G)