glXImportContextEXT man page on RedHat
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GLXIMPORTCONTEXTEXT(3G) OpenGL Manual GLXIMPORTCONTEXTEXT(3G)
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 _glxextstring(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()
COPYRIGHT
Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
AUTHORS
opengl.org
opengl.org 03/16/2013 GLXIMPORTCONTEXTEXT(3G)
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