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63 lines
2.2 KiB
63 lines
2.2 KiB
2 years ago
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( function () {
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class ParallaxBarrierEffect {
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constructor( renderer ) {
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const _camera = new THREE.OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
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const _scene = new THREE.Scene();
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const _stereo = new THREE.StereoCamera();
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const _params = {
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minFilter: THREE.LinearFilter,
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magFilter: THREE.NearestFilter,
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format: THREE.RGBAFormat
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};
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const _renderTargetL = new THREE.WebGLRenderTarget( 512, 512, _params );
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const _renderTargetR = new THREE.WebGLRenderTarget( 512, 512, _params );
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const _material = new THREE.ShaderMaterial( {
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uniforms: {
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'mapLeft': {
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value: _renderTargetL.texture
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},
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'mapRight': {
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value: _renderTargetR.texture
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}
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},
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vertexShader: [ 'varying vec2 vUv;', 'void main() {', ' vUv = vec2( uv.x, uv.y );', ' gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );', '}' ].join( '\n' ),
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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' )
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} );
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const mesh = new THREE.Mesh( new THREE.PlaneGeometry( 2, 2 ), _material );
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_scene.add( mesh );
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this.setSize = function ( width, height ) {
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renderer.setSize( width, height );
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const pixelRatio = renderer.getPixelRatio();
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_renderTargetL.setSize( width * pixelRatio, height * pixelRatio );
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_renderTargetR.setSize( width * pixelRatio, height * pixelRatio );
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};
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this.render = function ( scene, camera ) {
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if ( scene.matrixWorldAutoUpdate === true ) scene.updateMatrixWorld();
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if ( camera.parent === null && camera.matrixWorldAutoUpdate === true ) camera.updateMatrixWorld();
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_stereo.update( camera );
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renderer.setRenderTarget( _renderTargetL );
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renderer.clear();
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renderer.render( scene, _stereo.cameraL );
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renderer.setRenderTarget( _renderTargetR );
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renderer.clear();
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renderer.render( scene, _stereo.cameraR );
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renderer.setRenderTarget( null );
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renderer.render( _scene, _camera );
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};
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}
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}
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THREE.ParallaxBarrierEffect = ParallaxBarrierEffect;
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} )();
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