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# init(inferredFrom:inputValues:constantValues:)

Creates a descriptor by inferring configuration from a shader graph.

```
init(inferredFrom graph: ShaderGraph, inputValues: [String : MaterialParameters.Value] = [:], constantValues: MTLFunctionConstantValues = .init()) throws
```

## Discussion

Analyzes node connections to determine the appropriate lighting model and
settings — for example, enabling clearcoat if the graph connects to the
clearcoat output.

This initializer will not infer default values of inputs or function constants.

---

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