Re: [PyOpenGL-Users] bug in glDrawBuffers?

[René D. <re...@gm...>]

Hi,

I tried with python2.5.2 (preinstalled python) and python2.5.4 on osx
10.5.6 and it fails with both.

I made a small pyrex wrapper of the functions, and dropped them into
the test, and they worked.   So I'm guessing it's a ctypes issue of
some sort maybe.


cu,



On Mon, Feb 23, 2009 at 2:01 AM, Gijs <in...@bs...> wrote:
> On 2/22/09 5:43 AM, Mike C. Fletcher wrote:
>> Mike C. Fletcher wrote:
>>> Gijs wrote:
>> ...
>>> ...
>>>> ctypes.ArgumentError: argument 2: <type 'exceptions.TypeError'>:
>>>> wrong type
>>>>
>>>> I tend to cast everything that needs to be passed to OpenGL and is
>>>> returned from OpenGL functions (like the genTextures and
>>>> genFramebuffers function). Guess I kinda got used to it but I knew
>>>> it wasn't normal.
>>> Okay, that would seem to be final confirmation that we have bugs in
>>> handling of numpy uints on 32-bit platforms.  Luckily we now have a
>>> test-case I can run to provoke it :) .
>> Can you confirm that the machine exhibiting the problem is running
>> something less than Python 2.5.2?  I can duplicate the effect on my
>> 32-bit Vista machine *only* if I downgrade to 2.5.1.  Thinking back on
>> it, this must be the bug that we discovered which had us add the
>> ALLOW_NUMPY_SCALARS flag to the OpenGL.__init__ module.  Thomas had
>> said he was intending to fix it in ctypes, and it looks like he did
>> just that in 2.5.2.  2.5.4 does not exhibit the problem.
>>
>> Assuming that you can confirm it seems we'll either have to tell
>> people to use >= 2.5.2 and/or document the use of ALLOW_NUMPY_SCALARS
>> for those weird cases where for some reason someone needs to use an
>> older version.  Will need to test with Python 2.4 and/or stand-alone
>> ctypes to determine the versions to recommend.
>>
>> Thanks,
>> Mike
>>
> It's running Python 2.5.1. It is the standard version of Python that got
> delivered with Mac OS X 10.5. So unless people upgraded to a higher
> version of Python, it should affect everyone that's running Mac OS X 10.5.
>
> Regards, Gijs
>
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