On Wed, 12 Nov 2003 17:03:10 +0100, sascha <sas### [at] userssourceforgenet>
wrote:
> Yes, but in this case the windows version shoots reflected rays where the linux
version does not

Somehow I missed 'fresnel' keyword, sorry. In case of 'fresnel' there was a
problem related to equation I also found. This is a line:

  g = sqrt(Sqr(ior) + Sqr(cos_angle) - 1);

in lighting.cpp (in determine_reflectivity()). For some cases (also official
benchmark) it caused evaluation of sqrt for negative values. Depending on
compiler it could behave different.

And this is _not_ fixed yet. Any ideas would be appreciated for sure.

ABX

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