"Again refraction is only noticed at the interface of the materials - the fact that materials absorb light is irrelevent unless that light again reaches the interface (surface) which ain't nessisarily so."

This is true, not all materials transmit light. However, the important issue is absorbtion, or the amount of photons that are actually absorbed by a material. Again, Bryce doesn't actually calculate photon transmission of lights, so it's meaningless to Bryce renders, but it could play a factor in renderers that use physically correct lighting and photon mapping. Message edited on: 09/01/2004 03:05

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