_param1  Specifies the connection to the X server.

       _param2  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  an‐
       other 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  explic‐
       itly  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  _param2 refers to a direct rendering context then no error is gener‐
       ated 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 ar‐
       gument GLX_EXTENSIONS, extension EXT_import_context is supported.

ERRORS
       GLXBadContext is generated if _param2 does not refer to a valid context.

SEE ALSO
       glXCreateContext,       glXQueryVersion,       glXQueryExtensionsString,
       glXGetContextIDEXT, glXFreeContextEXT

                                                        GLXIMPORTCONTEXTEXT(3G)