I'm sharing some comments (below) received from Paul Spencer of SGI
regarding the use of IrisGL and OpenGL on the O2, and on-line manuals.
McGill Vision Research 687 Pine Ave, Rm H4-14 Montreal, Quebec CANADA
Voice: (514) 398-1019 Messages: (514) 843-1690 FAX: (514) 843-1691
Date: Tue, 29 Oct 1996 16:43:33 -0800 (PST)
Lynn Ziegler said:
Yes; so do all of our new systems, and I believe IR graphics too.Quote:
> It's going around that Iris GL on the O2 has to go through something
> called "Igloo" (?) to convert it to OpenGL or something like that.
igloo = (I)ris (GL) (O)n (O)penGL :-)
Not much. Yes, some, but not a big hit; and the new graphics areQuote:> So expectedly there is some sort of performance sacrifice for IrisGl
pretty fast anyway, so you may get a net speedup. (Comparing new
to old systems).
There are two standard works you should probably get:Quote:> Please your advice on the right OpenGL manuals to get for someone
> like me (comparable to the "GL Programming Guide, Vol 1 & 2") would
> be very much appreciated.
"OpenGL Reference Manual" ISBN 0-201-63276-4 (blue book)
"OpenGL Programming Guide" (red book)
That isbn is for the first (1992) edition, it's probably updated by
now. Someone stole my other book so I don't have an isbn for that
one. Both published by Addison-Wesley.
The on-line books aren't too bad, either.
These two books *are* on-line (along with other useful info).
Paul Spencer Silicon Graphics Advanced Systems Division