Surface Decoration

Generates skin or bark geometry for the skeleton.

The Surface Decoration node skins the plant skeleton. It takes the growth graph, sweeps a tube profile along the curves (respecting the width attribute), and produces a watertight mesh with UVs and displacement carried to the Simulate.

Inputs

Input	Description
Input 0: Graph	The growth graph.

Attributes

Attribute	Description
`width`	Consumed to drive the swept tube radius.
`P`	Consumed position along the curves.
`orient`	Consumed orientation along the curves.

Outputs

Output	Description
Output: Graph	The graph with surface generation instructions.

Intrinsics

Attribute	Description
`uv`	UVs on the output mesh.
`N`	Normals on the output mesh.

Parameters

Meshing

Parameter	Description
Divisions	Radial resolution of the tube. Higher values produce smoother cross-sections at the cost of polygon count.
Adaptive	Optimise polygon count based on curvature. Reduces geometry on straight sections while preserving detail on curves.

UVs

Parameter	Description
Scale	Tiling factor for textures. Controls how many times the texture repeats along the branch.
Offset	Shift UVs. Use this to offset the texture position on the mesh.

Displacement

Parameter	Description
Texture	Path to a height map. The texture is used to displace the surface for bark-like detail.
Strength	Displacement amount. Controls how strongly the height map affects the surface geometry.

Notes

For the main trunk, where texture fidelity and silhouette matter most, use the specialised Trunk Decoration instead.

Split

Creates explicit parallel branches in the growth graph. Distinct from innate forking, Split allows you to fork the topology into separate, distinct logical paths.

Surface Resource

Defines the material a Surface Decoration applies to the tree: colour, normal, roughness, displacement, and tint, packaged as a reusable resource.