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Table of Contents
glXImportContextEXT - import another process's indirect rendering context
GLXContext glXImportContextEXT( Display *dpy,
GLXContextID contextID )
eqn not supported
- dpy
- Specifies the connection to the X server.
- contextID
- Specifies a GLX rendering context.
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.
GLXBadContext
is generated if contextID does not refer to a valid context.
glXCreateContext,
glXQueryVersion, glXQueryExtensionsString, glXGetContextIDEXT, glXFreeContextEXT
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