RE: SGI OpenGL SI libs updated

[Suhaib Siddiqi <s_m_siddiqi at yahoo dot com>]

LibGLUT has nothing to do with GLX extension.  

You can checkout latest SGI OpenGL SI source cdoe from
their CVS http://oss.sgi.com/project/ogl-sample.

It is libGLcore.a and libglx.a(so) when linked to
X-server provide GLX extension and if your application
is linked to libGL.a, and libGLU.a, plus it included
/usr/X11R6/include/GL/glxext.h or glext.h which
contain calls to GLX extension, then your application
would need an X-server with GLX extension.

I do not understand why linking to libGLUT.a would
make your app call GLX extension. If your project is
an opensource or you want me to have a look at your
code, I would do my best to help you.

Suhaib

--- Andre Bleau <andre.bleau@courriel.polymtl.ca>
wrote:
> At 15:19 2000-06-15 -0400, Suhaib Siddiqi wrote:
> 
> > > I just want to compile, link and run an app that
> calls glut and GL
> > > functions on Windows 2000 and/or NT. I thought
> that cygwin was a good
> > > environnement for that.
> > >
> >
> >You should have no problem with it.  Link your
> application to linglut.a and
> >libGL.a, if needed to libGLU.a.  The application
> should work.
> >
> >
> > > For the moment, I don't care about hardware
> acceleration, or
> > > whether the GL
> > > functions are provided by an X server or by
> Windows.
> > >
> > > Buying a commercial X server for 2000/NT that
> supports GLX, such as HCL
> > > Exceed 3D, seems the only option by now; or is
> there a way to link with
> > > Windows function?
> >
> >I do not think so, I hvae a couple of applications,
> which use GLX extensions
> >and they work just fine on any X-server.  The
> privious versions of IBM
> >OpenDX
> >were linked to libGL.a.
> >
> >If you code is looking for a GLX extension is
> X-server, then you need to fix
> >that
> >in your code.
> >
> >I cannot promise xwin would display all the OpenGL
> applications, but I can
> >open all the
> >examples from SGI OpenGL SI on xwin server and also
> I can run IBM OpenDX
> >on xwin.  OpenDX is MOTIF/OpenGL Data Visualization
> Application, which does
> >hardware and
> >software OpenGL rendering.  I had been contributing
> to www.opendx.org Cygwin
> >ported
> >OpenDX since long time and users had no problems
> runing it on any X-servers.
> >
> >Suhaib
> 
> The problem is that the glutInit function in the
> last version of 
> sgi-opengl.tar.bz2 you provided checks for the GLX
> extension in the X 
> server and stops if it is not there:
> 
> GLUT: Fatal Error in (unamed): OpenGL GLX extension
> not supported by 
> display: 127.0.0.1:0
> 
> I can't see how to get around it.
> 
> 
> André Bleau, ing., analyste
> bleau@courriel.polymtl.ca
> 
> Département de génie électrique et         Electric
> Engineering and
> de génie informatique                      Computer
> Engineering department
> École Polytechnique de Montréal            Montreal
> Polytechnic School
> 


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