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- Path: sparky!uunet!usc!sdd.hp.com!uakari.primate.wisc.edu!relay!afterlife!dpkemp
- From: dpkemp@afterlife.ncsc.mil (David P. Kemp)
- Newsgroups: comp.unix.solaris,comp.sys.sun.admin,comp.sys.sun.hardware
- Subject: Re: Is XGL 2.0 overly complicated or what?
- Message-ID: <1992Aug1.020701.9357@afterlife.ncsc.mil>
- Date: 1 Aug 92 02:07:01 GMT
- References: <1992Jul31.205417.715@Warren.MENTORG.COM>
- Organization: The Great Beyond
- Lines: 43
-
- In article <1992Jul31.205417.715@Warren.MENTORG.COM> tal@Warren.MENTORG.COM (Tom Limoncelli) writes:
- >Right now SunOS/OpenWindows doesn't take advantage of the hardware
- >available in the gx graphics board. Sun is shipping the "XGL 2.0 RTE"
- >which basically patches various things so that it does take advantage
- >of the gx.
- >
- >The way they implemented everything, however, seems a bit bizarre. I
- >would think that it would be a replacement to only the X server but
- >they seem to require changes all over the place. It seems that they
- >have a couple processes talking via shared memory. Shouldn't that
- >all be in the server?
- >
- >What's the scoop?
- >
-
- XGL is an API for writing graphics programs. Programs written in XGL
- will use hardware acceleration on the local machine if it is available,
- or will use the X protocol if the client and server are not on the same
- machine.
-
- XGL RTE is the Run Time Environment that allows programs written in
- XGL to run.
-
- DGA (Direct Graphics Access) is the 'protocol' used by XGL to coordinate
- use of the graphics hardware with the X server.
-
- Direct Xlib is an implementation of Xlib that also uses the graphics
- hardware (via DGA, I presume).
-
- From your description, it sounds like you are referring to Direct Xlib
- rather than the XGL RTE. (I was under the impression that Sun's
- X11/News server had always used the GX. I seem to remember the claim,
- when the GX was first announced, that X/News automatically took advantage
- of GX acceleration if the hardware was installed. That's why I'm
- confused with the recent announcement of Direct Xlib, which claims
- to do something I thought had been done since day 1).
-
-
- --
- Dave Kemp dpkemp@afterlife.ncsc.mil
- -----------------------------------------------------------------------------
- "The use of history as therapy means the corruption of history as history."
- -- Arthur Schlesinger (quote stolen from Chet Ramey, CWRU)
-