Lutz-Peter Hooge wrote:

>But just setting F=1 would perhaps be the wrong solution (though it
>would still be much better than the current situation), since
>that would still be clipped to [reflectionmin, reflectionmax].
>There are some other references to total interreflection in that file so
>maybe this case is _supposed_ to be caught earlier?

TIR certainly is caught (detected in Refract_Guts() and flagged by return
value through Refract() and BackTraceRefract()) and the proper arrangements
made for reflected rays in compute_backtrace_texture() and
compute_lighted_texture(). However, determine_reflectivity() is called
before all this in both of the compute_*_texture functions, so the
information isn't yet available when determine_reflectivity is called and
the Fresnel calculations made.

I have no idea what the best solution would be. Is it such a bad idea to
obey the user-specified reflection_min/max even in the case of TIR?

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