Correct; this is by design (although you could question the design
)
Photons either reflect "glossily" or "specularly". Only "specular" photons contribute to caustics, only "diffuse" and "glossy" photons contribute to global illumination.
The A&D material treats any glossiness above 0.5 as "specular" for photons, and anything less as "glossy". Hence, it will
not propagate caustics for glossiness 0.5 r less.
/Z
Quote:
Originally Posted by AJLynn
With apologies to Jeff Patton, see attachments (Max08 file). I was messing around with an oversimplified version of a space I'm working on to experiment with some settings and exposure control, and I wanted to bounce a caustic off the floor. Used the Satin Varnished Wood preset, and started getting this sort of crap:
and a very slow photon map calculation with no apparent caustics.
Long story short, after some experimenting, for different values of the reflection glossiness on the wood floor:
0.51 and over produce the expected effect
0.5 and under produce the error
WTH is so special about glossiness=0.5? I would think that any reflection glossiness should be able to produce a caustic of whatever blurriness.
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