• Where to find it:

• Add Procedural Layer / Procedural / Custom / Perlin /

• NodeGraph / Right Mouse Click / Add Nodes / Procedural / Custom / Perlin /

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• Samples
• Options
• Color
• Size
• Modifiers
• Space
• Transform Scale
• Transform Rotate
• Transform Translate

Perlin Noise is a more advanced version of Mari's default Perlin giving more control options

• Color A/B

The two colors that make up the final look of the procedural

• Frequency

Size of fractal features on your model

• Seed

A random start value for your fractal.

Changing the seed changes the overall look of your fractal while the general feature look stays the same,

allowing for quick variation with a general look theme.

• Noise Type

This Perlin Noise implementation lets you choose from 3 different noise types, each giving slightly different results with the same settings

Perlin, Simplex, Value

• Threshold

Defines the Value at which point the noise will be tipped towards color A (values to the left of the set slider value)

or color B (values to the right of the set slider value).

• Clamp Output

Clamps the noise calculation to a 0-1 range.

Color A/B are applied after the Clamping, so you can still set values above 1 if you choose to

however by clamping the Noise calculation the color mixing between the two colors works more

reliably. In general this should be left on.

• Invert

Inverts the result of the noise. Inversion is done before color A and B are applied.

• UV Space

By default this procedural is generated in 3D World Space. This results in a seamless noise across UV seams.

By turning on UV Space the procedural is generated based on your UVs, resulting in seams between UV tiles/UDIM & uv shells.

Utilizing Transform Controls such as Scale (see below) you can apply a non-uniform transform to the procedural

to make use of specific UV layouts

• Scale X / Y / Z

Will apply a scale along X,Y or Z to your noise. This is useful for creating patterns like woodgrain, drips etc.

When UV Space is turned on Scale Z is ignored.

• Rotate X / Y / Z

Will apply a rotation in X,Y or Z to your noise. When UV Space is turned on Rotate X & Rotate Y are ignored

and rotation is done around the center of each UV Tile/UDIM using Rotate Z.

• Translate X / Y / Z

Will apply an offset in X,Y or Z to your noise. When UV Space is turned on Translate Z is ignored.

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