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From: robinro@bomber.ism.isc.com (Robin Roberts)
Newsgroups: comp.windows.x
Subject: Re:  Short circuiting network communication
Message-ID: <1990Dec16.201251.17923@ism.isc.com>
Date: 16 Dec 90 20:12:51 GMT
References: <9012091641.AA14521@Larry.McRCIM.McGill.EDU> <1990Dec10.181808.1528@news.arc.nasa.gov>
Sender: usenet@ism.isc.com (Usenet News)
Reply-To: robinro@bomber.ism.isc.com (Robin Roberts)
Organization: Interactive Systems Corp., Santa Monica, CA
Lines: 18

The original posting asked about ways to short circuit the net calls to
dump an image into a pixmap/window on the server when the client and server
were on the same host.

An example extension that avoided both the net calls and the parseing of 
the image into digestable chunks was made by Stardent wherein the added a
call XCreateShared Pixmap. The client sent a message to the server describing
the shared memory id of the newly created pixmap { the used that term
instead of image although unlike pixmap the memory organisation is public }.
Then the client could draw / copy data into the pixmap and make ordinary
copy pixmap requests to the server which would have access to the shared
memory.  This is all of course a non-standard extension to MIT's X11R3.

-- 
Robin D. Roberts           | <This space closed for remodeling.  Watch for
Interactive Systems Corp.  |  a new witty quotation scheduled to open in
Calabasas, Calif.          |  the Spring of 1991! >
Internet: robinro@ism.isc.com CompuServe: 72330,1244 GEnie: R.ROBERTS10