Am 28.08.10 12:34, schrieb HB-GRAL:
> Am 28.08.10 01:16, schrieb Tim Moore:
>> There needs to be some coordinate for the fog. You could try using
>> gl_FogFragCoord instead.
>>
>> Tim
>
> Thanks for your answer Tim. And what should happen when I change
> gl_BackColor.a from 0.0 to 1.0 in default.vert? I see here that this
> makes the terrain shaders (or the light) running at least for some older
> ATI cards (and .z/.w is def. not the problem).
>
> What do I loose with this change? What do I have to check? And could
> this work for terrain also for other cards with gl_BackColor.a = 1.0?
>
> Thanks, Yves
Ok, I can keep all the new code now with my older ATI. For my card I
only had to add 'if (gl_BackColor == 0.0) { n = -n; }' again in
default.frag and that seems finally to work with recent changes. Maybe
this makes not a lot of sense, but I do not care anymore ;-)
-Yves
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