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cyphyr
07-15-2005, 01:26 PM
http://www.avalonarts.co.uk/caustic_bottles.jpgJust a quick post to show off a quick (reletivly) solution to decent caustic glass in Lightwave. The whole thing took about an hour to render at 3000 x 2000 on a 3.4ghx laptop.
Problem: to get decent caustics in LW tyakes a whole bunch of time, is very slow and needs everything turned up in the render options which can make LW slow to a crawl.
Solution: dont render the glass! Make the glass object "unseen by camera", stick a camera above the object and turn off all but the caustic settings of the lights. Do a couple of test renders with low settings and then ramp them up.
Tip: Using the spinning light technique will soften the caustics just right.
Then use the rendered image as a groundplane image and render in FPrime.
All the best
cyphyr

uncommongrafx
07-15-2005, 01:31 PM
Hmm, very cool...Love the technique.

Gotta try this...

gristle
07-15-2005, 02:05 PM
Thats a good technique to get the radiosity speed of FPrime with caustics. I used the same to render this.

http://www.cgtalk.com/showthread.php?t=176614&highlight=screwpull

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