MirOS Manual: glXImportContextEXT(3)


GLXIMPORTCONTEXTEXT()UNIX Programmer's ManuaGLXIMPORTCONTEXTEXT()

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 exten-
     sion, 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.

MirOS BSD #10-current   Printed 20.2.2012                       1

GLXIMPORTCONTEXTEXT()UNIX Programmer's ManuaGLXIMPORTCONTEXTEXT()

SEE ALSO

     glXCreateContext, glXQueryVersion, glXQueryExtensionsString,
     glXGetContextIDEXT, glXFreeContextEXT

MirOS BSD #10-current   Printed 20.2.2012                       2

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