glximportcontextext(3) [redhat man page]

GLXIMPORTCONTEXTEXT()													     GLXIMPORTCONTEXTEXT()

NAME

       glXImportContextEXT - import another process's indirect rendering context.

C SPECIFICATION

       GLXContext glXImportContextEXT( Display *dpy,
				       GLXContextID contextID )

       delim $$

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 GLX_EXT_import_context is
       included in the string returned by glXQueryExtensionsString, when called with argument GLX_EXTENSIONS, extension EXT_import_context is sup-
       ported.

ERRORS

       GLXBadContext is generated if contextID does not refer to a valid context.

SEE ALSO

       glXCreateContext, glXQueryVersion, glXQueryExtensionsString, glXGetContextIDEXT, glXFreeContextEXT

															     GLXIMPORTCONTEXTEXT()

GLXQUERYCONTEXTINFOE(3G)					   OpenGL Manual					  GLXQUERYCONTEXTINFOE(3G)

NAME

       glXQueryContextInfoEXT - query context information

C SPECIFICATION

       int glXQueryContextInfoEXT(Display * dpy, GLXContext ctx, int attribute, int * value);

PARAMETERS

       dpy
	   Specifies the connection to the X server.

       ctx
	   Specifies a GLX rendering context.

       attribute
	   Specifies that a context parameter should be retrieved. Must be one of GLX_SHARED_CONTEXT_EXT, GLX_VISUAL_ID_EXT, or GLX_SCREEN_EXT.

       value
	   Contains the return value for attribute.

DESCRIPTION

       glXQueryContextInfoEXT sets value to the value of attribute with respect to ctx.  glXQueryContextInfoEXT returns an error code if it fails
       for any reason. Otherwise, Success is returned.

       attribute may be one of the following:

       GLX_SHARED_CONTEXT_EXT
	   Returns the XID of the share list context associated with ctx at its creation.

       GLX_VISUAL_ID_EXT
	   Returns the XID of the GLX Visual associated with ctx.

       GLX_SCREEN_EXT
	   Returns the screen number associated with ctx.

       This call may cause a round-trip to the server.

       glXQueryContextInfoEXT 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 ctx does not refer to a valid context.

       GLX_BAD_ATTRIBUTE is returned if attribute is not a valid GLX context attribute.

       fred GLX_BAD_CONTEXT is returned if attribute is not a valid context.

SEE ALSO

       glXCreateContext(), glXQueryVersion(), glXQueryExtensionsString()

COPYRIGHT

       Copyright (C) 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							    06/10/2014						  GLXQUERYCONTEXTINFOE(3G)