Function carbonShaderExpression

carbonShaderExpression(): AttributeDecorator<Attribute>
A static function that can be used as an expression in the Carbon Shader graph system. A node will be dynamically created and registered in the graph system. The decorated API will received a GraphCodeGenerationContext to generate the code for the expression.

The signature of the method must be
```
  myFunction(node:CodeGeneratingGraphNode, context:GraphCodeGenerationContext)
```
The function can then use the node and context to dynamically generate the expression code for the code-generation language of the context.

The following code shows how to create a function that calls the float3 constructors.
Returns AttributeDecorator<Attribute>
Example
```
 \@inspectableMethod(() => ({
		x: GraphNumberF32,
		y: GraphNumberF32,
		z: GraphNumberF32,
	}), () => GraphVector3F32)
	\@carbonShaderExpression()
	\@category("Construct")
	static makeFloat3(node: CodeGeneratingGraphNode, context: GraphCodeGenerationContext)
	{
		context.emitCode(context.getTypeName(node.outputPins.front.type));
		context.emitParameterListBegin();
		context.emitInputValueOrInvocationForNode(node, node.inputPins[0]);
		context.emitParameterListSeparator();
		context.emitInputValueOrInvocationForNode(node, node.inputPins[1]);
		context.emitParameterListSeparator();
		context.emitInputValueOrInvocationForNode(node, node.inputPins[2]);
		context.emitParameterListEnd();
	}
```
Note
The carbonShaderExpression requires the inspectableMethod decorator to be present on the function. Otherwise an error will be logged at startup. The inspectableMethod must used graph parameters such as GraphNumberF32 as input parameters.

It is important to keep the name of your function constant, otherwise graphs may cease to function as the registration is based on a mangled name, that includes the type and function name.

Function carbonShaderExpression

Returns AttributeDecorator<Attribute>

Example

Note

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