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- From: mjk@hoot.asd.sgi.com (Mark Kilgard)
- Newsgroups: comp.windows.x,comp.sys.sgi
- Subject: Re: X Under Windows NT
- Message-ID: <1992Nov9.043858.22202@odin.corp.sgi.com>
- Date: 9 Nov 92 04:38:58 GMT
- References: <id.5KFU.WOE@ferranti.com> <1992Oct26.221039.29314@decuac.dec.com> <rtonoi0@zola.esd.sgi.com> <1992Nov7.102526.19448@thunder.mcrcim.mcgill.edu>
- Sender: news@odin.corp.sgi.com (Net News)
- Organization: Silicon Graphics, Inc.
- Lines: 29
- Nntp-Posting-Host: hoot.asd.sgi.com
-
- In article <1992Nov7.102526.19448@thunder.mcrcim.mcgill.edu>, mouse@thunder.mcrcim.mcgill.edu (der Mouse) writes:
- |> [ Why is this in comp.sys.dec and comp.windows.news? I'm crossposting
- |> to comp.sys.sgi and removing c.s.dec and c.w.news from followups. ]
- |>
- |> In article <rtonoi0@zola.esd.sgi.com>, msc@ramoth.esd.sgi.com (Mark Callow) writes:
- |> > In article <1992Oct28.170229.29369@news.dfrf.nasa.gov>, todd@fred.dfrf.nasa.gov writes:
- |>
- |> >> At NASA we run our realtime flight simulator on an SGI doing the
- |> >> simulation models in one CPU and out the window visuals in another.
- |> >> The entire frame runs in under 1ms, I think you have experience with
- |> >> the wrong machine running X.
- |> > This example proves nothing. The flight simulator is not an X
- |> > program.
- |>
- |> If it's a modern release of Irix, everything that draws on the display
- |> is an X program. Or at least such is my understanding of their
- |> implementation; since I am not privy to full details, I could well be
- |> wrong. Perhaps some SGI person will be kind enough to give us the full
- |> truth of the matter.
-
- Strictly speaking your first sentence is true in that all IRIX
- graphics programs do connect to the X server. It is not true that
- they all do their rendering through the X server. In actuality IRIS
- GL programmers have virtualized direct hardware access. The IRIS
- GL library hides the X connection and the hardware dependencies from
- the programmer. The X conncetion is used for non-rendering window
- system operations such as window tree manipulation and event handling.
-
- - Mark
-