Thanks for sharing this piledotNET, it looks really good i must say.
I’ve been experimenting a bit with it too and i have this suggestion to make it render a bit faster, you gave the cilinders quite a few sides, while only 3 seem to do fine because the hairs shouldn’t be more then a few pixels wide anyway, and the smoothing will keep the shading fine. I used a bit more segments in the height though, to get nicer curves, i think that’s a better use of poly’s then adding to many sides to the hairs.
Here’s also a tip how to increase the render times dramaticly ;)This test shows how well it works with GI, it is lighted by one omni on the side and a skylight. I removed the selfillumination and replaced the colorgradient with a solid color to better see the actual GI lightning. It took more then 3 hours to render, but that’s without any optimization (i just put in some settings i thought would work and left my computer alone to do the rest)
I must say i personly quite liked the result (althought it can still be improved al lot), so here it is:

To bad the jpeg compression made my high anti-alliasing settings useless :hmm: