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		<p class="inheritance" translate="no"><a href="EventDispatcher.html">EventDispatcher</a> → <a href="Node.html">Node</a> → <a href="CodeNode.html">CodeNode</a> → </p>
	<h1 translate="no">FunctionNode</h1>
		<section>
			<header>
				<div class="class-description"><p>This class represents a native shader function. It can be used to implement
certain aspects of a node material with native shader code. There are two predefined
TSL functions for easier usage.</p>
<ul>
<li><code>wgslFn</code>: Creates a WGSL function node.</li>
<li><code>glslFn</code>: Creates a GLSL function node.</li>
</ul>
<p>A basic example with one include looks like so:</p></div>
				<h2>Code Example</h2>
				<div translate="no"><pre><code class="language-js">const desaturateWGSLFn = wgslFn( `
	fn desaturate( color:vec3&lt;f32> ) -> vec3&lt;f32> {
		let lum = vec3&lt;f32>( 0.299, 0.587, 0.114 );
		return vec3&lt;f32>( dot( lum, color ) );
	}`
);
const someWGSLFn = wgslFn( `
	fn someFn( color:vec3&lt;f32> ) -> vec3&lt;f32> {
		return desaturate( color );
	}
`, [ desaturateWGSLFn ] );
material.colorNode = someWGSLFn( { color: texture( map ) } );
</code></pre></div>
			</header>
			<article>
				<div class="container-overview">
					<h2>Constructor</h2>
					<h3 class="name name-method" id="FunctionNode" translate="no">new <a href="#FunctionNode">FunctionNode</a><span class="signature">( code : <span class="param-type">string</span>, includes : <span class="param-type">Array.&lt;Node></span>, language : <span class="param-type">'js' | 'wgsl' | 'glsl'</span> )</span> </h3>
					<div class="method">
						<div class="description">
							<p>Constructs a new function node.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>code</code></td>
									<td class="description last"><p>The native code.<br/>Default is <code>''</code>.</p></td>
								</tr>
								<tr>
									<td class="name"><code>includes</code></td>
									<td class="description last"><p>An array of includes.<br/>Default is <code>[]</code>.</p></td>
								</tr>
								<tr>
									<td class="name"><code>language</code></td>
									<td class="description last"><p>The used language.<br/>Default is <code>''</code>.</p></td>
								</tr>
							</tbody>
						</table>
					</div>
				</div>
				<h2 class="subsection-title">Methods</h2>
					<h3 class="name name-method" id="getInputs" translate="no">.<a href="#getInputs">getInputs</a><span class="signature">( builder : <span class="param-type">NodeBuilder</span> )</span><span class="type-signature"> : Array.&lt;<a href="NodeFunctionInput.html">NodeFunctionInput</a>></span> </h3>
					<div class="method">
						<div class="description">
							<p>Returns the inputs of this function node.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>builder</code></td>
									<td class="description last"><p>The current node builder.</p></td>
								</tr>
							</tbody>
						</table>
						<dl class="details">
							<dt class="tag-returns"><strong>Returns:</strong> The inputs.</dt>
						</dl>
					</div>
					<h3 class="name name-method" id="getMemberType" translate="no">.<a href="#getMemberType">getMemberType</a><span class="signature">( builder : <span class="param-type">NodeBuilder</span>, name : <span class="param-type">string</span> )</span><span class="type-signature"> : string</span> </h3>
					<div class="method">
						<div class="description">
							<p>Returns the type of a member of this function node.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>builder</code></td>
									<td class="description last"><p>The current node builder.</p></td>
								</tr>
								<tr>
									<td class="name"><code>name</code></td>
									<td class="description last"><p>The name of the member.</p></td>
								</tr>
							</tbody>
						</table>
						<dl class="details">
							<dt class="tag-overrides"><strong>Overrides:</strong> <a href="CodeNode.html#getMemberType">CodeNode#getMemberType</a></dt>
						</dl>
						<dl class="details">
							<dt class="tag-returns"><strong>Returns:</strong> The type of the member.</dt>
						</dl>
					</div>
					<h3 class="name name-method" id="getNodeFunction" translate="no">.<a href="#getNodeFunction">getNodeFunction</a><span class="signature">( builder : <span class="param-type">NodeBuilder</span> )</span><span class="type-signature"> : <a href="NodeFunction.html">NodeFunction</a></span> </h3>
					<div class="method">
						<div class="description">
							<p>Returns the node function for this function node.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>builder</code></td>
									<td class="description last"><p>The current node builder.</p></td>
								</tr>
							</tbody>
						</table>
						<dl class="details">
							<dt class="tag-returns"><strong>Returns:</strong> The node function.</dt>
						</dl>
					</div>
					<h3 class="name name-method" id="getNodeType" translate="no">.<a href="#getNodeType">getNodeType</a><span class="signature">( builder : <span class="param-type">NodeBuilder</span> )</span><span class="type-signature"> : string</span> </h3>
					<div class="method">
						<div class="description">
							<p>Returns the type of this function node.</p>
						</div>
						<table class="params">
							<tbody>
								<tr>
									<td class="name"><code>builder</code></td>
									<td class="description last"><p>The current node builder.</p></td>
								</tr>
							</tbody>
						</table>
						<dl class="details">
							<dt class="tag-overrides"><strong>Overrides:</strong> <a href="CodeNode.html#getNodeType">CodeNode#getNodeType</a></dt>
						</dl>
						<dl class="details">
							<dt class="tag-returns"><strong>Returns:</strong> The type.</dt>
						</dl>
					</div>
				<h2 class="subsection-title">Source</h2>
				<p>
					<a href="https://github.com/mrdoob/three.js/blob/master/src/nodes/code/FunctionNode.js" target="_blank" rel="noopener" translate="no">src/nodes/code/FunctionNode.js</a>
				</p>
			</article>
		</section>
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