madno2 opened this issue on Nov 18, 2012 ยท 41 posts
bagginsbill posted Tue, 20 November 2012 at 11:44 PM
I didn't read all so I'm sorry if I'm repeating an answer.
Those meshy artifacts are self-shadowing, the result of smoothing, which also happens with displacement. There ends up being two versions of the mesh - the original unsmoothed which is used for raytracing, and the smoothed (geometry altered) for actual rendering of geometry. These two are at odds with each other and produce inconsistencies in shadowing (raytraced). It's part of the baggage of being a hybridized raytrace-REYES renderer.
If you increase shadow min bias, it goes away.
And I think I saw a complaint that nobody ever explained it. I will counter complain that I've explained it at least 20 times and I was not read.
Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)