> Interesting - if you replace the sqrt(...) in the isosurface with > sqrt(max(0,...)) it should work reliably with all versions (but is slow as > hell for some reason).
I'll test that later.
Then it must be <0 allmost all the time,
as all I get is that line at the edge,
the rest is black. (groove and sky!).
Bye, Olaf.
