The Hammered texture produces a pattern of cells that are each surrounded by a raised rim.  In its undistorted form it resembles a mosaic or leaded glass pattern.  Distortion can produce a beaten metal appearance.

Parameters :

Position : Position of the texture.

Scale : The texture is scaled by this value.  Use these parameters to scale or stretch the texture in one or more directions.

Jitter : This is the noise that distorts the basic pattern.

Roughness : This is the overall roughness or "grit" that is added to the texture.

Rim Radius : This parameter specifies one half the width of the ''bars'' that separate the adjacent cells.

Rim Sharpness : The rim around the cells can be made very subtle or made to stand out in high relief compared to the cell surface.

Notes : Without distortion this texture has a very geometric but irregular appearance.  Interesting effects can be achieved by making the rim width obscure the cells.  More jitter and roughness add naturalistic randomness.