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# ShaderGraph.Node.NodeData

```
enum NodeData
```

## Topics

### Enumeration Cases

[`case constant(ShaderGraph.Value)`](/documentation/RealityKit/ShaderGraph/Node/NodeData/constant(_:))

A node with a fixed, inline value.

[`case definition(ShaderGraph.NodeDefinition)`](/documentation/RealityKit/ShaderGraph/Node/NodeData/definition(_:))

A node defined by a [`ShaderGraph.NodeDefinition`](/documentation/RealityKit/ShaderGraph/NodeDefinition) from a [`ShaderGraph.NodeLibrary`](/documentation/RealityKit/ShaderGraph/NodeLibrary).

[`case graph(ShaderGraph)`](/documentation/RealityKit/ShaderGraph/Node/NodeData/graph(_:))

A subgraph node, embedding another [`ShaderGraph`](/documentation/RealityKit/ShaderGraph) as a node.

## Relationships

### Conforms To

[`Equatable`](/documentation/Swift/Equatable)

---

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