Perlin noise node

The Perlin noise node outputs a texture generated as a sum of Perlin noise functions with increasing frequencies and decreasing amplitudes. Perlin noise has a wide range of applications, such as stains, wood, dust…

Inputs

The Perlin noise node does not accept any input.

Outputs

The Perlin noise node provides a greyscale Perlin noise texture.

Parameters

The Perlin noise node accepts the following parameters:

• Scale X and Scale Y are the subdivisions of the first iteration

• Iterations is the number of iterations

• Persistance is the ratio between the amplitude of subsequent iterations. Lower values of persistance generate smoother textures.

Notes

As with all random nodes, the seed is held by the node’s position, so moving the node in the graph will modify the texture, and the outputs will remain the same if its position and parameters are not changed.

Example images

Variations

• The Color Perlin node generates an RGB image made of 3 greyscale Perlin Noise images.

• The Perlin Warp1 and Perlin Warp2 nodes generate Perlin noise with domain warping.