simon@gmdtub (Simon Leinen) (02/09/91)
>>>>> On 30 Jan 91 15:48:13 GMT, mef@police.rutgers.edu (Marc E. >>>>> Fiuczynski) said: Marc> Can someone explain to me what the MIT SHM extensions are. Just Marc> point me to the proper man pages would be enough, but if you Marc> have the time a little more info wouldn't hurt. This question belongs in comp.windows.x. MIT-SHM is an extension to the X window system protocol which is handled by the default configuration of the sample server from MIT (and probably other vendors' servers, too). You can find out about this by typing `xdpyinfo' to your X display: ... number of extensions: 4 SHAPE >>> MIT-SHM Multi-Buffering MIT-SUNDRY-NONSTANDARD ... The MIT-SHM extension provides a fast transfer method for pixmap data for clients that run on the same machine as the server. I don't know about any programs that use it, but SHM should be beneficial for animation programs or so. -- Simon.
jcoco@hobbes.ctc.tasc.COM (Joe Coco xwindows) (02/11/91)
If my system has the SHM extension, how do I use it? Is it automatically used or do I need to write Xlib code to access it? Thanks jcoco@tasc.ctc.com
corbet@cyser.atd.ucar.edu (Jonathan Corbet) (02/12/91)
jcoco@hobbes.ctc.tasc.COM (Joe Coco xwindows): >If my system has the SHM extension, how do I use it? >Is it automatically used or do I need to write Xlib >code to access it? You need to write Xlib code. I wrote a short document on the shared memory extension a while back; it's available for anonymous FTP from stout.atd.ucar.edu (128.117.80.30) in pub/X-shared-memory.doc. -- Jonathan Corbet National Center for Atmospheric Research, Atmospheric Technology Division corbet@stout.atd.ucar.edu