glXImportContextEXT()glXImportContextEXT()NAMEglXImportContextEXT - import another process's indirect rendering con‐
text.
SYNOPSIS
GLXContext glXImportContextEXT(
Display *dpy,
GLXContextID contextID );
PARAMETERS
Specifies the connection to the X server. 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 glXFreeCon‐
textEXT().
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 gen‐
erated 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 con‐
text.
SEE ALSOglXCreateContext(), glXQueryVersion(), glXQueryExtensionsString(),
glXGetContextIDEXT(), glXFreeContextEXT()glXImportContextEXT()
