Mipmap bias

[zenop]

In Arnold 4.X we used to be able to set negative values in the mipmap bias. Is this still possible somehow? It doesn't seem to work in Arnold 5.

[Stephen.Blair · Accepted solution]

Works from me.

mipBias -3
MIP-COUNT[4490,384,96,96,24,6,2,1,1,1,1,1,1]

mipBias 0
MIP-COUNT[0,0,0,0,0,0,0,1,1,1,1,0,0]

[zenop]

How did you get this info Stephen? I am glad it is still working! Where I couldn't get this working was in the aiimage, inputting negative values into my hdr doesn't seem to affect it like it did previously. Did the workflow change for this?

[Stephen.Blair]

The MIP-COUNT is from the Arnold log (verbosity level Warnings + Info).

I find it hard to get a good visual example, I finally managed to set one up with Arnold 4.2.x. where I can actually see the diff.

[zenop]

I see. Previously it would blur the whole image significantly, so far that I'd use it as a highly defocused backdrop for my shading work. Maybe I was just exploiting a bug. It's not a big deal. Thanks for the answers!