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web-app/node_modules/three/examples/jsm/tsl/display/ParallaxBarrierPassNode.js

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+import { nodeObject, Fn, vec4, uv, NodeMaterial, If, mod, screenCoordinate } from 'three/tsl';
+import StereoCompositePassNode from './StereoCompositePassNode.js';
+
+class ParallaxBarrierPassNode extends StereoCompositePassNode {
+
+	static get type() {
+
+		return 'ParallaxBarrierPassNode';
+
+	}
+
+	constructor( scene, camera ) {
+
+		super( scene, camera );
+
+		this.isParallaxBarrierPassNode = true;
+
+	}
+
+	setup( builder ) {
+
+		const uvNode = uv();
+
+		const parallaxBarrier = Fn( () => {
+
+			const color = vec4().toVar();
+
+			If( mod( screenCoordinate.y, 2 ).greaterThan( 1 ), () => {
+
+				color.assign( this._mapLeft.uv( uvNode ) );
+
+			} ).Else( () => {
+
+				color.assign( this._mapRight.uv( uvNode ) );
+
+			} );
+
+			return color;
+
+		} );
+
+		const material = this._material || ( this._material = new NodeMaterial() );
+		material.fragmentNode = parallaxBarrier().context( builder.getSharedContext() );
+		material.needsUpdate = true;
+
+		return super.setup( builder );
+
+	}
+
+}
+
+export default ParallaxBarrierPassNode;
+
+export const parallaxBarrierPass = ( scene, camera ) => nodeObject( new ParallaxBarrierPassNode( scene, camera ) );