Outputted from pov as 48 bit linear. Compressed in Photoshop
using transfer curve (intensity only) based on a film response
curve from Kodak site. It's a typical compression curve. Then
gamma 2.2 corrected and converted to 24 bit.

My tests with the Cornell box indicated that correct fade_distance
for diffuse sources is same as source diameter. The spotlights
use (90^2/falloff^2)*diameter as fade distance because of the
directional nature of the source. I'm not sure if this is correct
but it looks ok. Any lighting engineers here?


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Kari Kivisalo

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