C SPECIFICATION

       GLXContext glXImportContextEXT( Display *,
                                       GLXContextID GLXContextID )

PARAMETERS

       Specifies the connection to the X server.


       GLXContextID  Specifies a GLX rendering context.

DESCRIPTION

       glXImportContextEXT creates a GLXContext given the XID of  an  existing
       GLXContext.   It  may  be  used  in place of glXCreateContext, to share
       another process's indirect rendering context.

       Only the server-side  context  information  can  be  shared  between  X
       clients;  client-side  state,  such  as  pixel storage modes, cannot be
       shared. Thus, glXImportContextEXT must allocate memory to store client-
       side information. This memory is freed by calling glXFreeContextEXT.

       This  call  does  not  create  a  new XID.  It merely makes an existing
       object available to the importing client (Display *).  Like any XID, it
       goes  away  when  the creating client drops its connection or the ID is
       explicitly deleted. Note that this is  when  the  XID  goes  away.  The
       object  goes away when the XID goes away AND the context is not current
       to any thread.

       If GLXContextID refers to a direct rendering context then no  error  is
       generated but glXImportContextEXT returns NULL.

       glXImportContextEXT  is  part  of the EXT_import_context extension, not
       part of the core GLX command set. If GLX_EXT_import_context is included
       in  the  string  returned by glXQueryExtensionsString, when called with
       argument GLX_EXTENSIONS, extension EXT_import_context is supported.

ERRORS

       GLXBadContext is generated if GLXContextID does not refer  to  a  valid
       context.

SEE ALSO

       glXCreateContext,       glXQueryVersion,      glXQueryExtensionsString,
       glXGetContextIDEXT, glXFreeContextEXT



                                                       GLXIMPORTCONTEXTEXT(3G)