Wood texture simulates the look of wood rings and grain in the relief. The appearance of different species of wood can be simulated by adjusting the various parameters of the texture.

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.

Twist : This is an adjustment to the noise applied to the rings.  The higher the value here the more tightly "wound" the noise becomes.

Continuity : Higher value here makes the rings more continuous.  Lower values will make the rings more and more fragmented.

Granularity : This parameter controls how "gritty" the rings are.

Ring Spacing : The rings that appear in the relief are cross sections of the layers that make up the texture.  Ring spacing is the nominal distance between layers.

Ring Width : The rings have a characteristic width or thickness as well as spacing.

Grain : In addition to the rings, a linear grain can be specified in the texture.  The grain remains linear but is perturbed by the noise applied to the rings.

Grain Stretch : This parameter specifies how long the "fibers" of the grain appear to be.

Bias : The wood texture simulates a "board" cut from a virtual "log".  The log is centered at the Position value and extends along the X axis.  The "bias" parameter specifies in degrees how much the log is tipped around the Y axis.  More bias in the cut exposes more end grain.

Notes : We are slicing through the "log" with the shape of the relief so using the wood texture on a rounded relief, for example, will give a different texture than if we use a flat relief.