glXImportContextEXT - import another process's indirect
GLXContextID contextID );
Specifies the connection to the X server. Specifies a GLX
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
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 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.
GLXBadContext is generated if contextID does not refer to
a valid context.
glXCreateContext(), glXQueryVersion(), glXQueryExtensionsString(),
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