Re: [PyOpenGL-Users] crash on import on Mac OS X after xml-generation merge explained

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

On 14-01-24 04:14 PM, rndblnch wrote:
> Mike C. Fletcher <mcfletch <at> vrplumber.com> writes:
...
> it does not crash any more.
> however on my personal test suite (the same program converted step by step
> from using OpenGL 1. to modern OpenGL, see
> https://bitbucket.org/rndblnch/opengl-programmable/) it works until the
> introduction of vertex attributes (steps 01-direct.py to 06-perpixel.py
> work, but 07-attrib.py, 08-pbo.py, etc. give a black screen).
> i suspect that the pointer/offset parameter of the glXxxxPointer functions
> is not handled properly, i will look into it (i use ctypes arrays, no numpy).
I looked into it, and there was, indeed, a problem with the ctypes 
pointer handling.  Basically we were getting pointer-to-pointer (i.e. 
the address of the pointer variable) instead of the pointer's value when 
doing a dataPointer() call on them.  I've fixed that on bzr head, and 
all of your samples now seem to run correctly on bzr head. What's weird 
is that code hadn't changed; it seems that something higher-level meant 
that the code-path just wasn't being executed in the old PyOpenGL releases.

By the way, do you have a tutorial (text) somewhere connected with your 
samples? And would you like the code linked into the PyOpenGL 
documentation samples (i.e. when someone looks at the glXxxxPointer 
functions they'd see a reference to your hg repository?)

I fixed an (unrelated) bug that was preventing the various configuration 
flags (e.g. FULL_LOGGING) from running, and regenerated the 
OpenGL_accelerate wrappers with the new Cython release.

I *think* we're fairly close to a beta-1 release for PyOpenGL 3.1 at 
this point.  I still need to get some time to run the Windows tests and 
re-run the Linux tests with the updated Cython wrappers.

Thanks,
Mike

-- 
________________________________________________
   Mike C. Fletcher
   Designer, VR Plumber, Coder
   http://www.vrplumber.com
   http://blog.vrplumber.com