So i have had a few issues with my characters scale, however I believe they are scaled pretty well for houdini. I could and maybe should scale them up a bit, but they are human biped characters exactly the same size as tommy (test geo). I have this issue where the charactrs come from daz and they have a "eye moisture" thin layer above the eye, but they are in such a similar spot that I end up having issues where karma will only show one or the other. I also had artifacts in a previous project where I was using redshift, where I would just nudge them both a bit using a peak sop, but it seems harder to get it to work with karma.

I guess my question is, should I scale up everything ? Is this the best fix? Even though it seems like things are the right scale in sops? Or should i scale my whole scene up just in karma? or am i being silly and should I not have an "eye moisture" layer on top of the eyeball and instead just use a coat or something over the eye in its own shader? or is there some other kind of fix I could try?

is it precision, or ray bias that's the issue? The default ray bias is 1mm, which would miss the other side of thin refractive surfaces like that.

jsmack
is it precision, or ray bias that's the issue? The default ray bias is 1mm, which would miss the other side of thin refractive surfaces like that.

err wasnt aware of ray bias, that fixes it. thanks!