Quote - Hm.

Here's a basic question. I've always assumed that the Hair Room settings for root width and tip width matched up to the shading rate. (Thus no point of having a shading rate lower than say .25 if neither your tip nor root width are less than .25.) Now I have no idea where I got that assumption. Is it true?

Those widths refer to the relative width of the rectangle billboards that the hair strand is made up of. While having a low shading rate will help to render small billboards, they are not directly related. Certainly the units have nothing to do with each other. The shading rate is in square pixels, whereas the hair width - well I don't know what it is exactly.

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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)