What should I do to get rid of the displacement modifier artifacts on this gold bar? (see attached image). Blender version is 2.52.5 revision 29870 Windows 64-bit running on Win7 64-bit.
Modifier settings are as follows:
Subsurface (set to whatever level I think necessary for the particular render. I have noticed that the higher this is set, the more artifacts appear)
Displacement (Normal; UV; Midlevel = 0; Strength = -0.02; Vertex influence group set to the top vertices of the gold bar)
The material is a raytraced mirror gold color with Gloss set to 0.930. The color isn’t yellow enough and so still needs tweaking. I have noticed that turning Gloss to 1 eliminates the artifacts, but the result is unrealistic and undesirable.
The displacement texture map is a simple black square with softened white text. In the texture panel it is unchecked and is not being applied to the gold material.
In the UV unwrap, the top faces of the gold bar are Projected from View, and the rest of the faces are welded together and placed over a black portion of the displacement texture.
I have noticed that turning off Anti-Aliasing eliminates the artifacts, but that is not a viable solution.