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tools:scratch

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Scratch

This node creates procedural scratches that can be used to drive material attributes.

Controls

Density

The density of the scratches, a higher density creates more scratches.

Width

The width of each scratch, which is also randomised per scratch.

Scale

This allows for scaling the procedural up or down.

Strength

The strength of the scratches. This can be used to mask the scratches if the Strength is driven using the node input.

Seed

The seed for the noise used to position and rotate the scratches. A different seed creates a different distribution of scratches even if all the other parameters are identical.

Divisions

Internally, this value is used to determine the “search range” for scratches around the currently shaded spot. Larger values will result in longer rendering times. Decreasing this value will product less scratches (which can be countered by increasing the density). Useful values are between 5 and 50.

The Roughness and Anisotropic values can be used to drive any parameter. The naming used is for convenience as they should be connected to the inputs of the same names in the Principled BSDF node for a scratch effect.

Base Roughness

The Roughness value to send to the node output if no scratch is hit.

Scratch Roughness

The Roughness value to send to the node output if the current shaded spot is on a scratch.

Base Anisotropic

The Anisotropic value to send to the node output if no scratch is hit.

Scratch Anisotropic

The Anisotropic value to send to the node output if the current shaded spot is on a scratch.

Rotation Offset

Connections

Inputs

The inputs correspond to the controls of the same name.

Outputs

tools/scratch.1613400112.txt.gz · Last modified: 2021/02/15 15:41 by lightwolf