Dithering in Normal Map's Blue Channel

nacire

Hey all, as the topic suggests, I'm getting some weird dithering in the blue channel of my normal map. I'm not to sure what is causing it, but any insight on the problem would be awesome. Thanks!

Here is an example of the issue. The one on the left is a screen grab of the model with normal and spec applied, while the one on the right is a screen grab of the blue channel in Photoshop with the levels adjusted to more easily see what's going on.

Rob Galanakis

AFAIK this is a hardware/driver issue.

What is this screengrab from?
What hardware are you using?
Are your drivers updated?
Have you tried your normal map anywhere else?
A pic of your normal map?

nacire

haha, thanks Prof! Okay Scratch that, it looks fine in Max but not in Maya. Should have checked that first! :P

Rob Galanakis

I figured. I've seen this problem with Maya and nVidia Quadro/FX/whatever they are called cards. There is probably a fix for it but I've never bothered searching it out.