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104 lines
2.1 KiB
104 lines
2.1 KiB
/**
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* @author mrdoob / http://mrdoob.com/
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* @author marklundin / http://mark-lundin.com/
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* @author alteredq / http://alteredqualia.com/
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*/
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THREE.ParallaxBarrierEffect = function ( renderer ) {
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var _camera = new THREE.OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
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var _scene = new THREE.Scene();
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var _stereo = new THREE.StereoCamera();
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var _params = { minFilter: THREE.LinearFilter, magFilter: THREE.NearestFilter, format: THREE.RGBAFormat };
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var _renderTargetL = new THREE.WebGLRenderTarget( 512, 512, _params );
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var _renderTargetR = new THREE.WebGLRenderTarget( 512, 512, _params );
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var _material = new THREE.ShaderMaterial( {
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uniforms: {
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"mapLeft": { value: _renderTargetL.texture },
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"mapRight": { value: _renderTargetR.texture }
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},
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vertexShader: [
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"varying vec2 vUv;",
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"void main() {",
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" vUv = vec2( uv.x, uv.y );",
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" gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );",
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"}"
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].join( "\n" ),
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fragmentShader: [
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"uniform sampler2D mapLeft;",
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"uniform sampler2D mapRight;",
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"varying vec2 vUv;",
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"void main() {",
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" vec2 uv = vUv;",
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" if ( ( mod( gl_FragCoord.y, 2.0 ) ) > 1.00 ) {",
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" gl_FragColor = texture2D( mapLeft, uv );",
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" } else {",
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" gl_FragColor = texture2D( mapRight, uv );",
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" }",
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"}"
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].join( "\n" )
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} );
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var mesh = new THREE.Mesh( new THREE.PlaneBufferGeometry( 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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var 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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scene.updateMatrixWorld();
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if ( camera.parent === null ) 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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