See my phrasing? I was very precise. "addition to the GUI". The feature was already there, only accessible through Python.  There are posts about this somewhere from weeks ago, where I showed how the shadow samples could be set via Python and what that did to improve soft shadows.

But now its in the GUI, too. That's why I didn't post a plugin to expose this feature - no need.

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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)