NAME
glXImportContextEXT - import another process's indirect
rendering context.
C SPECIFICATION
GLXContext glXImportContextEXT( Display *dpy,
GLXContextID contextID )
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 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 contextID does not refer to a
valid context.
SEE ALSO
glXCreateContext, glXQueryVersion, glXQueryExtensionsString,
glXGetContextIDEXT, glXFreeContextEXT