Re: [PyOpenGL-Users] Checking Shader Errors

[Gijs <in...@bs...>]

Ian Mallett wrote:
> Yes, this was basically what I came up with.
>
> The problem turns out to be that for gl_LightSource[n], n must be a
> literal int or const int.  I'm not sure why this could be.  Ideas?  
>
> I solved the problem by passing the light source itself to the function.  
>
> There's a few more other problems, but it's mostly done.
>
> Ian
I have run into a similar problem regarding indexes of arrays like
these. I tried to index gl_FragColor using a variable. Something which
the Mac OS X driver doesn't like at all. So I unrolled the for-loop and
used const integers instead of variables. However, I only saw this
problem when I was using my mac. In Windows and Linux it worked like a
charm, both using the ATI 9.3 drivers. In Linux the 9.2 driver actually
crashed when I used arrays like this. So I don't really know what your
problem is, but it could be driver or videocard related. See if updating
your drivers fixes any problems.

Regards, Gijs