Ward -- scratchy highlight in Mat Editor

[davision]

When using Ward with a glossy reflection lower than .75, there is a weird linear "scratch" highlight running diagonally across the lower right side of the sphere in the material editor.

Why does this happen?

[TishoChaos]

It is the way Ward calculations work. They are cut off on some point.

[davision]

Okay. Well I'm glad this is intended behavior. But can you explain it a bit more -- what do you mean by "they are cut off on some point"?

[TishoChaos]

The formula for Ward cuts the reflections, when they get big enough. This is one of the reasons to have had red dots in scenes with Ward material.