Cheers Adam, Are you talking about how the vertex colors are blending between vertices? If you're painting in full color, I don't know that you can get that blend, as its a hardware level lerp, and you're not wanting a linear gradation. If you go back to painting masks you could get an adjustable gradation like that a…
Constant bias scale is really just short form for an add multiply, yes. Think like manually unpacking a normal map. Your source data is from 0-1, black to white, but you need it in the range of -1 to +1. So you need to bias it, and scale it. in this case, you add(bias by) -0.5 then multiply(scale) by 2. graphical example…