*BSD News Article 72231


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From: akin@tuolumne.asd.sgi.com (Allen Akin)
Newsgroups: comp.graphics.api.misc,comp.graphics.algorithms,comp.windows.x.i386unix,gnu.misc.discuss,comp.unix.bsd.freebsd.misc,comp.os.linux.development.apps
Subject: Re: Freeware community needs 3d library NOW
Followup-To: comp.graphics.api.misc,comp.graphics.api.opengl
Date: 27 Jun 1996 21:29:02 GMT
Organization: Silicon Graphics, Inc., Mountain View, CA
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In article <4qujqi$vsm@guysmiley.blarg.net>,
Brandon J. Van Every <vanevery@blarg.net> wrote:
| Which features do you feel those are?  Direct3d is targeted very
| specifically at the 3d games market.
| ...
| Such as...?  And what do you feel OpenGL does better, by comparison?

I covered some of this in my other reply, so I won't repeat that here. 
I'll write more about it as soon as I have time, now that D3D is
available to the general public.

| Which classes of games do you think D3D [retained mode] falls short on?

Those that involve dynamically-changing geometry.  That includes the
obvious stuff (nontrivial character animation, lots of objects moving
in an unconstrained way) but also some less-obvious stuff (for
example, flight simulation in which the terrain is too large to keep
in main memory at all times).

| How do you see OpenGL as providing a superior development cycle
| turnaround time...

There are more people working on it, and more developers releasing it
on independent schedules, than D3D.  It's also more easily extended.

|                                                           ...  If SGI
| really wants to ensure that OpenGL design cycles outstrip Direct3d
| design cycles, I'd really like to see them provide a Sample
| Implementation that has a much more efficient internal structure. ...

We're working on a high-performance base implementation for Wintel
platforms.  We demonstrated it at the SGI developer's conference last
month, and you'll also be able to see it at SIGGRAPH.

| : or until someone
| : comes up with a great new incompatible idea that takes the gaming
| : world by storm.
| 
| What might that be?  :-)

Wish I knew. :-)

Allen