Re: [PyOpenGL-Devel] pyopengl and pypy

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

On 10-12-02 08:45 AM, rndblnch wrote:
...
>     def dataPointer(value):
>         return ctypes.cast(ctypes.c_char_p(value), ctypes.c_void_p).value
>   
I don't see any documentation on this for CPython, for PyPy this
apparently is going to create a copy of the data in value?  My quick
test says on CPython it doesn't copy the data, so I've swapped it into
the code.
> PyBuffer_FromMemory can be implemented as (not tested though, since it's 
> only used in experimental code for vbos):
>     def PyBuffer_FromMemory(address, length):
>         return buffer((ctypes.c_char * length).from_address(address))
>   
I've updated to use that one as well.
> the whole thread is there for reference:
> <http://codespeak.net/pipermail/pypy-dev/2010q4/006452.html>
>
>
> 2) the second issue (missing _CDada_intput) is from pypy. the good news is that 
> it has already been fixed by Amaury Forgeot d'Arc in the fast-forward branch 
> (aiming at cpython 2.7 compatibility). the patch (requires some adaptation to 
> apply on pypy-1.4) can be found there:
> <http://codespeak.net/pipermail/pypy-svn/2010-November/045106.html>
>   
Hmm, that branch doesn't build on my machine, so I can't test the changes.
> so far, i have managed to partially run the programs of my small opengl 
> tutorial, i.e. a sample program that use most of the functionalities of the
> fixed pipeline and that is evolved step by step into a shader based 
> implementation. what runs for the moment (with minor errors):
> - 01-direct.py (direct rendering, some geometry + 3d texture)
> - 02-displaylist.py
> - 03-array.py (use of Vertex/.../NormalPointer)
> - 04-vbo.py (idem + VBOs to pass the data)
> what does not run: the rest that uses shaders, but i'm pretty confident it's a
> minor issue (wrong types in glShaderSource arguments)
>
> the programs are based on pyopengl and can be found here:
> <http://bitbucket.org/rndblnch/opengl-programmable/>
>   
I'll try to find some time to play with them.  Good luck,
Mike

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