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Subject: 
Re: Glut fixes and Offscreen Rendering
Newsgroups: 
lugnet.cad.dev.org.ldraw, lugnet.cad.dev.mac
Date: 
Tue, 7 Jan 2003 12:34:28 GMT
Viewed: 
1687 times
  
In article <H8B5o0.4zx@lugnet.com>,
"Don Heyse" <dheyse@hotmail.spam.go.away.com> wrote:

In lugnet.cad.dev.org.ldraw, James Reynolds writes:
FYI: there is a 10.2.3 update.  OpenGL is updated to 1.4 in this release.

Has anyone else updated and tried LdGLite?  I haven't installed it and don't
plan to until next week (by then www.macfixit.com should have a good list of
problems associated with the update).

Hmm. When I run Apple System Profiler I get the following entries

AGL.framework       2.2.7   18 Dec 2002 01:23 AM  OpenGL Carbon
compatibility dylib for Mac OS X
GLUT.framework     2.2.7   18 Dec 2002 01:29 AM   GLUT dylib for Mac OS X
OpenGL.framework 1.2.1   18 Dec 2002 01:20 AM   OpenGL 1.2.1.9.0

Does this mean my PowerBook G3 FireWire doesn't support OpenGL 1.4 or
that somehow my update to 10.2.3 didn't go quite right?

I tried LDGLite, and I didn't notice any difference. LDGLite still does
receive keyboard input.

According to this page they've made quite a few GLUT fixes.

  http://developer.apple.com/qa/qa2001/qa1229.html

I'm not sure what effect they'll have, if any.

Meanwhile I finally managed to find some code examples for offscreen
rendering with OpenGL on a Mac.  I have no idea if it works or not
(probably not) but if anyone wants to try it out, I built an executable
and put it here:

  http://ldglite.sf.net/ldgliteosx0_9_5g.zip

To render offscreen you use -MS on the ldglite command line, eg.

  ldglite -v3 -l3 -i1 -MS mymodel.mpd

Now that I think about it, I'm not sure how many Mac users would
want an offscreen command line oriented renderer, but I just hate to
give extra goodies to some platforms, and not others.

Don

I do not know what you mean be an offscreen command line renderer. Do
you mean that running the command will procude a graphic file without
drawing the model to the screen?

Chris



Message has 1 Reply:
  Re: Glut fixes and Offscreen Rendering
 
(...) I'm not sure if the framework number is the same as the OpenGL version number. However I think ldglite prints the opengl version number when run from a command prompt so you could check it that way. Maybe it only installs the new OpenGL if you (...) (22 years ago, 8-Jan-03, to lugnet.cad.dev.org.ldraw, lugnet.cad.dev.mac)

Message is in Reply To:
  Glut fixes and Offscreen Rendering
 
(...) According to this page they've made quite a few GLUT fixes. (URL) not sure what effect they'll have, if any. Meanwhile I finally managed to find some code examples for offscreen rendering with OpenGL on a Mac. I have no idea if it works or not (...) (22 years ago, 6-Jan-03, to lugnet.cad.dev.org.ldraw, lugnet.cad.dev.mac)

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