https://github.com/WWBN/AVideo/issues/8713

node_modules/three/examples/js/effects/ParallaxBarrierEffect.js

@@ -0,0 +1,97 @@
+THREE.ParallaxBarrierEffect = function ( renderer ) {
+
+	var _camera = new THREE.OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
+
+	var _scene = new THREE.Scene();
+
+	var _stereo = new THREE.StereoCamera();
+
+	var _params = { minFilter: THREE.LinearFilter, magFilter: THREE.NearestFilter, format: THREE.RGBAFormat };
+
+	var _renderTargetL = new THREE.WebGLRenderTarget( 512, 512, _params );
+	var _renderTargetR = new THREE.WebGLRenderTarget( 512, 512, _params );
+
+	var _material = new THREE.ShaderMaterial( {
+
+		uniforms: {
+
+			'mapLeft': { value: _renderTargetL.texture },
+			'mapRight': { value: _renderTargetR.texture }
+
+		},
+
+		vertexShader: [
+
+			'varying vec2 vUv;',
+
+			'void main() {',
+
+			'	vUv = vec2( uv.x, uv.y );',
+			'	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );',
+
+			'}'
+
+		].join( '\n' ),
+
+		fragmentShader: [
+
+			'uniform sampler2D mapLeft;',
+			'uniform sampler2D mapRight;',
+			'varying vec2 vUv;',
+
+			'void main() {',
+
+			'	vec2 uv = vUv;',
+
+			'	if ( ( mod( gl_FragCoord.y, 2.0 ) ) > 1.00 ) {',
+
+			'		gl_FragColor = texture2D( mapLeft, uv );',
+
+			'	} else {',
+
+			'		gl_FragColor = texture2D( mapRight, uv );',
+
+			'	}',
+
+			'}'
+
+		].join( '\n' )
+
+	} );
+
+	var mesh = new THREE.Mesh( new THREE.PlaneGeometry( 2, 2 ), _material );
+	_scene.add( mesh );
+
+	this.setSize = function ( width, height ) {
+
+		renderer.setSize( width, height );
+
+		var pixelRatio = renderer.getPixelRatio();
+
+		_renderTargetL.setSize( width * pixelRatio, height * pixelRatio );
+		_renderTargetR.setSize( width * pixelRatio, height * pixelRatio );
+
+	};
+
+	this.render = function ( scene, camera ) {
+
+		scene.updateMatrixWorld();
+
+		if ( camera.parent === null ) camera.updateMatrixWorld();
+
+		_stereo.update( camera );
+
+		renderer.setRenderTarget( _renderTargetL );
+		renderer.clear();
+		renderer.render( scene, _stereo.cameraL );
+
+		renderer.setRenderTarget( _renderTargetR );
+		renderer.clear();
+		renderer.render( scene, _stereo.cameraR );
+
+		renderer.setRenderTarget( null );
+		renderer.render( _scene, _camera );
+
+	};
+
+};