Re: [PyOpenGL-Users] How to get OpenGL4 using PyOpenGL

On 11-06-18 06:01 AM, Przemysław Lib wrote:
>> In *theory* all the entry points are
>> there, but I expect there will be broken wrappers somewhere.
> Unfortunately, not all functions are declared in extensions. (checked
> that in gl3.h, and others).
> So there is need to parse at least also gl3.h and gl3ext.h, to get full OGL 4.1.
>
> I'll have some free time in near future so ill play a bit.
>
> I'm writing to both mailing-lists but in future ill write only to devel list.
Hmm, surprised about that; but it would certainly be possible, I only do
spot checks, I don't review everything that is generated.

If we are seeing missing entry points we may want to consider using the
gl.spec file to do the generation, or potentially going back to
re-investigate sharing the pyglet generator code. Currently the pyglet
generator I have seems out-of-date enough not to be able to parse my
Maverick machine's gl.h, but in theory it should be able to parse almost
any header and generate wrappers. IIRC back when it was able to parse
the files it was only failing due to some fairly subtle errors wrt
pointer and array types.

The gl.spec file should, in theory, always be up to date and include all
entry points and constants, as it is the place where new entry
points/constants should be registered. It is not as "C-friendly" as the
header files, but it is, I believe, what the headers are generated from.
The current generator is very sensitive to the format of the generated
.h files, so likely won't easily parse other header files.

I'll probably be working on PyOpenGL or OpenGLContext development
tomorrow (Monday), and will hang out in #pyopengl on freenode. I may try
to get the pyglet generator or a spec-based generator working to cover
the missing entry points. I'd like to get 4.x support in before
releasing 3.0.2b1, hopefully sometime in early July.

Have fun,
Mike

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


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