[Radiance-general] Gendaylit Visible radiation

[Lars O. Grobe]

Hi Julien!

> I don't forget to apply the skyfunc to a glow modifier. Here  is 2 files which describe my sky. Did I make something wrong? 

Seams to be ok in there.

> I use rtrace to calculate the irradiance in a point high in the sky (100meter). -ab parameter is equal to 0, I don't need interreflexion for this case (...)

Could you please try with -ab 1? Your glow is effective only in the indirect calculation. rtrace calculates irradiance on a virtual diffuse surface, so the glow is hit over at least one bounce.

I have to admit that I tend to forget the exact behavior of rtrace here and cannot test it. The -I may internally increase -ab, but I would not expect it.

Cheers, Lars.