glXImportContextEXT man page on YellowDog

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GLXIMPORTCONTEXTEXT()					 GLXIMPORTCONTEXTEXT()

NAME
       glXImportContextEXT  - import another process's indirect rendering con‐
       text.

C SPECIFICATION
       GLXContext glXImportContextEXT( Display *dpy,
				       GLXContextID contextID )

       delim $$

PARAMETERS
       dpy	  Specifies the connection to the X server.

       contextID  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 contextID refers to a direct rendering context then no error is gen‐
       erated 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 contextID does not refer to a valid  con‐
       text.

SEE ALSO
       glXCreateContext, glXQueryVersion, glXQueryExtensionsString, glXGetCon‐
       textIDEXT, glXFreeContextEXT

							 GLXIMPORTCONTEXTEXT()
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