[Python-modules-team] Bug#441343: Bug#441343: python-opengl: Things go awfully slow

[Torsten Marek]

Am Samstag, den 08.09.2007, 18:36 -0300 schrieb Margarita Manterola:
> Package: python-opengl
> Version: 3.0.0~a6-4
> Severity: important
> 
> Hi!
> 
> With the python-opengl that is currently in testing, all things that need
> opengl go awfully slow.  I have tried this both in a machine that has mostly
> Etch, and in a machine that is updated to the latest versions in unstable.
> 
> Downgrading to the version in Etch makes things go fast again.
> 
> I've tried with Etch's and Lenny's version of most of the dependencies, and
> I wasn't able to make it go fast unless I downgraded python-opengl, so I'm
> thinking there's a problem in that package.
> 
> I've tested with an Intel video card, and an ATI video card, both with
> "Direct Rendering: yes" in the glxinfo output, both with the standard X
> drivers for them.
> 
> Please let me know if I can add any additional useful information.

Hi,

guessing wildly, I'd say this is due to the fact that PyOpenGL 3 uses
ctypes instead of native bindings, although I didn't expect it to be
that bad.

Unfortunately, I can't try out accelerated rendering on my own machine
now (thanks to some not-mentioned major graphics card vendor who is
somehow unable to put out drivers that run stable with SMP systems, way
to go!). Could you provide a small test script and some timings and I'll
try to work it out with upstream.

best,

Torsten
-- 
Torsten Marek <shlomme at gmx.net>
ID: A244C858 -- FP: 1902 0002 5DFC 856B F146  894C 7CC5 451E A244 C858
Keyserver: subkeys.pgp.net

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