Wood

Category: Texture Generators

Shader Family: Texture

Output: Color

Simulates wood surfaces using a complex fractal. Based on a coordinate input, it can simulate mahogany, rosewood, pine, and more. You can even specify the age of the wood and introduce grain. The wood shader is made up of concentric rings of layers that you can distort with a fractal to add a natural irregularity to the layers.

Name	The shader's name. Enter any name you like, or leave the default.
Coordinates	Defines the U, V, and Z texture coordinates.

Colors

Filler Color	Defines the color of the filler portion of the wood. This color fades into the vein portion of the layer. Playing with this parameter will create different types of wood.
Vein Color	Defines the color of the vein in the wood.
Vein Spread	Defines how much of the vein color spreads into the filler color of the wood.

Grain

Grain Color	Defines the color of the wood grain
Grain Bias	Defines how much contrast there is between the grain color and the wood colors (vein and filler).
Grain Size	Defines the size of the grains in the wood.
Grain Density	Defines the density of the grain in the wood. If the Grain Bias parameter is set to 1, then a value of 1 in Grain Density results in the wood being completely covered with grain.

Aging

Layer Size	Defines the size of the layer. It is based on a 0-1 scale.
Layer Randomness	Because all layers are not equal (as in real life; i.e., weather, etc.), this parameter affects the amount of variation there is in the size of layers.
Age	Defines the "age" of the wood, and it determines how many layers it takes to reach the full layer size.
Wobbly Structure	Slightly deforms the wood and is no longer contained in a unit square, much like melted wood. For this parameter to have an effect, the fractal amplitude cannot be 0.
Center U, V	Defines the U and V points of origin of the layers.

Fractal

Ratio	Defines the amplitude of the successive iterations relative to the current one. For values less than 1, successive iterations have a lower amplitude; for values greater than 1, the iterations have a higher amplitude and the fractal becomes unbounded.
Frequencies	Defines the frequency of the fractal in the X, Y, and Z directions. High values take longer to render.
Complexity	The maximum number of noise iterations used when calculating the fractal.
Amplitude U/V	Defines the base amplitude of the fractal used to calculate this texture. This parameter only applies to the amplitude of the first iteration; successive iterations may further increase the amplitude.
Absolute	Makes the procedure use a slightly different algorithm, which introduces discontinuities into the fractal, creating the impression of turbulence.

Render Tree Usage

Use this shader to drive a parameter with a texture effect anywhere in a render tree. This shader generates a texture that can be used as a color, a Weight value in a mixer shader, or to drive any surface shader parameter.

Connect a Texture Space Controller shader to drive the Coordinate value of this shader.

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