pyopengl-users

[PyOpenGL-Users] PyOpenGL 2.0.x, Python 2.3 and Red Hat 9.0

[Matt P. <mp...@ya...>]

Hi,

I'm a new user of PyOpenGL (and OpenGL in general) and
I'm wanting to use Python in a few 3D projects I am
working on.  However, I am stymied by the fact I
cannot get PyOpenGL to build or work successfully on
my system.

I have a stock Red Hat 9.0 Personal installation on an
AMD Athlon with an nVidia GeForce 4 video card.  I am
using the nVidia drivers for hardware acceleration
(and it is fast judging by the OpenGL screen savers).

I have installed glut 3.7 from RPM.  I have, however,
replaced Python 2.2 with a build of Python 2.3 from
source.  I've had no problems with Python 2.3 with the
exception of PyOpenGL.  I have SWIG 1.1 (comes with
RH9), Numeric 23.0 (from source), the Python Imaging
Library (latest stable release built from source).  I
also have OpenGLContext 2.x installed from RPM.

However, when I try to build PyOpenGL (either the beta
release or the RC2 release), I either get build
failures (headers not found) or segmentation faults. 
Once I got glut installed, the major build failures
disappeared.  I disabled the build of Togl since it
kept causing seg faults.  With Togl builds disabled,
PyOpenGL compiles but fails to install fully.  

I can import the OpenGL module but I can get nothing
to run.  Half of the time, it reports failure to
locate module GL.__init__.  The rest of the time, I
get a good import and then Python seg faults.

FYI, I have Mesa 3.x installed (which ever version
ships with RH9).  I have managed to compile Mesa 5.x
but haven't installed it for fear of throwing one more
variable into the unknown.

So my question is: has anyone had any success getting
PyOpenGL up and running using Python 2.3 under Red Hat
9?  RH9 is largely an incremental upgrade to RH8
(which I upgraded from) so I don't see any major
library differences.  Could GCC 3.2.2 be the problem? 
I desperately would like to use PyOpenGL and I need it
since it is the low-level rendering API the other APIs
I want to use depend on (PyGame and PyUI). 

I am open to any suggestions short of rebuilding my
box.  :)  I also have a SuSe 8.2 Pro machine with a
Voodoo3 I can experiment on.  It is a new install and
hasn't been touched yet.

Any help appreciated.

Matt Pickering

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Re: [PyOpenGL-Users] PyOpenGL 2.0.x, Python 2.3 and Red Hat 9.0

[Mike C. F. <mcf...@ro...>]

Matt Pickering wrote:
...

>I have a stock Red Hat 9.0 Personal installation 
>  
>
...

>I have SWIG 1.1 (comes with
>RH9), 
>
Shouldn't be necessary for any packaged build (e.g. rc2 or 2.0.1.07).

>Numeric 23.0 (from source), 
>
Okay.

>the Python Imaging
>Library (latest stable release built from source).  I
>also have OpenGLContext 2.x installed from RPM.
>  
>
Okay, neither of these should affect PyOpenGL itself, they're loosely 
coupled by Python code.

>However, when I try to build PyOpenGL (either the beta
>release or the RC2 release), I either get build
>failures (headers not found) 
>
Could it be you don't have the Python 2.3 headers/libs available in your 
path?  RedHat normally has a python-devel RPM that has this stuff IIRC.  
Not sure how it works for a from-source install.

>or segmentation faults. 
>Once I got glut installed, the major build failures
>disappeared.  I disabled the build of Togl since it
>kept causing seg faults.  With Togl builds disabled,
>PyOpenGL compiles but fails to install fully.  
>  
>
Just to be clear: you completely cleaned out any previous version of 
PyOpenGL, right?  That is, you nuked the entire site-packages/OpenGL 
directory?

>I can import the OpenGL module but I can get nothing
>to run.  Half of the time, it reports failure to
>locate module GL.__init__.  The rest of the time, I
>get a good import and then Python seg faults.
>  
>
Sounds very much as though you have an older version (likely compiled 
against Python 2.2.x) conflicting with the new version.  rc2 changed the 
name of that module to GL.GL__init__ to allow OS-X to load the 
libraries.  I'd suggest trying a clean build (i.e. nuke the final 
installation directory and the source-directory/build directory and then 
re-build).

>FYI, I have Mesa 3.x installed (which ever version
>ships with RH9).  I have managed to compile Mesa 5.x
>but haven't installed it for fear of throwing one more
>variable into the unknown.
>  
>
Shouldn't be necessary.  PyOpenGL knows basically nothing about Mesa.

>So my question is: has anyone had any success getting
>PyOpenGL up and running using Python 2.3 under Red Hat
>9?  RH9 is largely an incremental upgrade to RH8
>(which I upgraded from) so I don't see any major
>library differences.  
>
I switched my dual-boot drive to Knoppix a few weeks ago, so I don't 
have a RedHat install for testing/building any more.

>Could GCC 3.2.2 be the problem? 
>  
>
Not likely.

>I am open to any suggestions short of rebuilding my
>box.  :)  
>
:)  Debian is a comparative dream. ;)

>I also have a SuSe 8.2 Pro machine with a
>Voodoo3 I can experiment on.  It is a new install and
>hasn't been touched yet.
>  
>
Sure, you could try it there, but probably won't help you any?  rc2 is 
known to build and run on Knoppix (Debian) under Python 2.3 (with togl 
disabled), so it would really seem that it's your RedHat install that 
needs some love.

Okay, must get back to paying work now.  Good luck,
Mike

_______________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://members.rogers.com/mcfletch/

Re: [PyOpenGL-Users] PyOpenGL 2.0.x, Python 2.3 and Red Hat 9.0

[Rene D. <il...@ya...>]

Matt Pickering wrote:

>Hi,
>
>I'm a new user of PyOpenGL (and OpenGL in general) and
>I'm wanting to use Python in a few 3D projects I am
>working on.  However, I am stymied by the fact I
>cannot get PyOpenGL to build or work successfully on
>my system.
>
>I have a stock Red Hat 9.0 Personal installation on an
>AMD Athlon with an nVidia GeForce 4 video card.  I am
>using the nVidia drivers for hardware acceleration
>(and it is fast judging by the OpenGL screen savers).
>
>I have installed glut 3.7 from RPM.  I have, however,
>replaced Python 2.2 with a build of Python 2.3 from
>source.  I've had no problems with Python 2.3 with the
>exception of PyOpenGL.  I have SWIG 1.1 (comes with
>RH9), Numeric 23.0 (from source), the Python Imaging
>Library (latest stable release built from source).  I
>also have OpenGLContext 2.x installed from RPM.
>
>However, when I try to build PyOpenGL (either the beta
>release or the RC2 release), I either get build
>failures (headers not found) or segmentation faults. 
>Once I got glut installed, the major build failures
>disappeared.  I disabled the build of Togl since it
>kept causing seg faults.  With Togl builds disabled,
>PyOpenGL compiles but fails to install fully.  
>
>I can import the OpenGL module but I can get nothing
>to run.  Half of the time, it reports failure to
>locate module GL.__init__.  The rest of the time, I
>get a good import and then Python seg faults.
>
>FYI, I have Mesa 3.x installed (which ever version
>ships with RH9).  I have managed to compile Mesa 5.x
>but haven't installed it for fear of throwing one more
>variable into the unknown.
>
>So my question is: has anyone had any success getting
>PyOpenGL up and running using Python 2.3 under Red Hat
>9?  RH9 is largely an incremental upgrade to RH8
>(which I upgraded from) so I don't see any major
>library differences.  Could GCC 3.2.2 be the problem? 
>I desperately would like to use PyOpenGL and I need it
>since it is the low-level rendering API the other APIs
>I want to use depend on (PyGame and PyUI). 
>  
>

I think pyui can run without opengl.  It could at one point in time anyway.

>I am open to any suggestions short of rebuilding my
>box.  :)  I also have a SuSe 8.2 Pro machine with a
>Voodoo3 I can experiment on.  It is a new install and
>hasn't been touched yet.
>
>Any help appreciated.
>
>Matt Pickering
>  
>

Get swig 1.3.13.  Check out the readme.cvs and the docs on 
pyopengl.sf.net for some other build instructions.

Also note, you'll probably need the nvidia opengl drivers for full 
opengl goodness(or does redhat come with their drivers?).


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