glXImportContextEXT(3G) OpenGL Reference - GLX glXImportContextEXT(3G)NAMEglXImportContextEXT - 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.
DESCRIPTIONglXImportContextEXT 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.
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glXImportContextEXT(3G) OpenGL Reference - GLX glXImportContextEXT(3G)SEE ALSO
glXCreateContext, glXQueryVersion, glXQueryExtensionsString,
glXGetContextIDEXT, glXFreeContextEXT
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