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- From: pathak@mitre.org (Heeren Pathak)
- Subject: Re: SGI-GL in Windows NT??
- Message-ID: <pathak-110193095747@virtual.mitre.org>
- Followup-To: comp.os.os2.advocacy
- Sender: news@linus.mitre.org (News Service)
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- Organization: Mitre Corporation
- References: <dlcogswe.726380388@vela> <8368@lib.tmc.edu> <1993Jan8.174312.26479@solaris.rz.tu-clausthal.de> <hatton.726530814@cgl.ucsf.edu> <930109083021@rgam.sc.ti.com> <hatton.726615957@cgl.ucsf.edu> <1993Jan11.023030.14034@ryn.mro4.dec.com>
- Date: Mon, 11 Jan 1993 15:11:02 GMT
- Lines: 40
-
- > When IBM (or someone) puts 3D graphics on OS/2, will you deride it
- > then, or will you suddenly decide that the time is right, and IBM will
- > produce the appropriate video drivers one day, so it's worth waiting
- > for?
-
- I don't think anyone is deriding MS for putting GL into NT. The point is
- that without having real hardware support, it is not very worthwhile. I my
- mind there are some reservations of putting GL into NT as a general purpose
- 3D graphics language but that really is more of a business decision, not a
- technical one.
-
- While GL is good for rendering, it isn't a very good model for animating a
- 3D figure. Once the data goes into the pipe (which does all the matrix
- transforms), you can't modify it. If you want to change the image, you
- need to dump the entire dataset back into the pipeline. Granted with fast
- hardware and memory I/O it doesn't take much time to push the dataset down
- the pipe, but it is inefficient.
-
- Much for SGI's business is with people that render large datasets so this
- model works great for them. In such an environment, one of the dimesions
- of the dataset is time so animation is generally performed by rendering a
- series of images and then cycling rapidly through them. Is this model good
- for general purpose 3D graphics? No. Is any model good for
- general-purpose 3D graphics? No. The graphics industry keeps debating how
- to correctly do 3D graphics. The problem is that the best way to do 3D
- depends on the context of the problem.
-
- Since NT is supposed to be used on multiple platforms and MS pushes it as a
- general purpose OS, I question the wisdom of using GL. It seems to me that
- having GL in NT forces other computer hardware vendors to license NT from
- SGI, develop the GL compatible graphics package, admit that their platform
- isn't very good at doing 3D using NT, or not support NT on their hardware.
-
- -------------------------------------------------------------------------
- Heeren Pathak | Millions long for immortality who do
- pathak@mitre.org | not know what to do with themselves
- Mitre Corporation | on a rainy Sunday afternoon.
- (617) 271-7465 | -- Susan Ertz
- -------------------------------------------------------------------------
- Disclaimer: Mine not Mitre's.
-