[PyOpenCL] OpenGL interop on Mac OS X patch

[Andreas Kloeckner]

On Thu, 24 Feb 2011 11:32:31 -0500, Ian Johnson <enjalot at gmail.com> wrote:
> Same,
> 
> Traceback (most recent call last):
>   File "examples/gl_interop_demo.py", line 73, in <module>
>     initialize()
>   File "examples/gl_interop_demo.py", line 30, in initialize
>     devices=[])
> pyopencl.LogicError: Context failed: invalid value - invalid context
> property
> 
> The problem is that on the mac this:
> #if defined(cl_khr_gl_sharing) && (cl_khr_gl_sharing >= 1)
> is never defined, so having the if defined(__APPLE__) inside means it never
> happens on mac

Ok, I didn't understand that bit. Turns out that cl_ext.h was never
included on Apple. I've made another attempt to fix this--can you please
try again?

> Also, on linux I would get an error sometimes because of trying to convert
> the gl context handle from a long integer to a regular int and it being too
> big. I forgot where that code is though

Thanks!
Andreas
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