Dennis Pierce (dpierce++at++ddi.digital.net)
Fri, 18 Oct 1996 12:06:08 -0400
Do you mean you brought the IRISGL libraries from 5.3 to 6.2?
In other words, did you "copy" the libraries from one machine
to the other? If so, for starters you would be well advised
to "install" the IRISGL libraries from a 6.2 IRIS Development
Option CD. And while we're at it, what version of Performer
are you using? In general, re-install all of the old 5.3
functionality that you had on the Crimson, but use the 6.2
products.
Ok, now for the BIG question -- what's the difference between
IRISGL and OpenGL, and what should I look out for? As part of
the 6.2 IDO, there is a nice Insight guide that addresses that
very question. Any other answer is way way too big to send
for a first "info-performer" encounter. After you've looked at
the book, reviewed the code, and searched the relevant archives
at www.sgi.com/Technology/Performer/, then come back with whatever
bounded questions you have. Otherwise, the porting is something
of a big subject with dozens of nuances that may or may not be
relevant.
As for the "graininess", well its either detail texture that you
never saw before and didn't know you had bound, or its the
mismatch between texture "styles" on the RE and IR. Oh yeah, that
brings up another question -- is it a Crimson/RE -> Onyx/IR port
or a Crimson/RE to an Onyx/RE port?
Good Luck!
On Oct 18, 10:48, Daniel Dougherty wrote:
> Subject: information gathering
> Subject: Time:
10:21 AM
> OFFICE MEMO information gathering Date:
10/18/96
>
> hello,
> I am new to this list and hopefully this is the right place to
send my questions to. I am fairly new to Performer 2.0, IrisGl/OpenGL
and their capibilites, I have an understanding but not very technical,
so please stay with me. We use these tools for military training
purposes to show the ability to roam around a 3D virtual world. We use
dted data and lay terrain over it. We were originally working on IRIX
5.3 on a Crimson Reality Engine and have ported to 6.2 on an Onyx. We
brought the IGL libraries over to the new system. When we run the
"Stealth" view, in debug mode, there seems to be a problem with loading
textures. There also apprears Warning: PfGeoState. When I move around
the 3D environment and zoom in on the terrain, lots of tiny black dots
appear, but only to a certain point on the screen while looking into
the distance. I believe the term is "graininess".
> To try to make it simple, what are the major differences,
pitfalls to look out for going from 5.3 to 6.2 in terms of IGL and OGL.
I am assuming that OGL function calls are non-existent and need to be,
since there were no problems using 5.3. I hope this makes some sense.
Any help would be greatly appreciated. thanx in advance
>
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>-- End of excerpt from Daniel Dougherty
---- Dennis Pierce dpierce++at++digital.net POB 321206 CCB FL 32932 http://ddi.digital.net/~dpierce 011.407.784.8371 ======================================================================= List Archives, FAQ, FTP: http://www.sgi.com/Technology/Performer/ Submissions: info-performer++at++sgi.com Admin. requests: info-performer-request++at++sgi.com
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