My roughness crawls, why?

[Q] I have created an animation (Hurrah!) and when I look at each of the individual frames, they look just as I thought they might. However, when I animate them, anywhere I have applied the "roughness" parameter, surfaces look animated...with lots of "crawling" effect on them. What gives?

Roughness should NOT be used on objects that will be animated. (Unless of course, the "crawley" effect is what you're after). This is caused by a bug in the roughness algorithm. One of the main work-arounds suggested, is by using a very small or fine bump-map. Another work- around is to create a DPaint (or for that matter ANY IFF) multi-gray shaded screen and apply it as an altitude map.


Last Update: July 13, 1995
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