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+/**
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+ * @author bhouston / http://clara.io/
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+ */
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+
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+import {
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+ BackSide,
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+ BoxBufferGeometry,
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+ Mesh,
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+ PerspectiveCamera,
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+ Scene,
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+ ShaderLib,
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+ ShaderMaterial
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+} from "../../../build/three.module.js";
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+import { Pass } from "../postprocessing/Pass.js";
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+
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+var CubeTexturePass = function ( camera, envMap, opacity ) {
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+
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+ Pass.call( this );
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+
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+ this.camera = camera;
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+
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+ this.needsSwap = false;
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+
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+ this.cubeShader = ShaderLib[ 'cube' ];
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+ this.cubeMesh = new Mesh(
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+ new BoxBufferGeometry( 10, 10, 10 ),
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+ new ShaderMaterial( {
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+ uniforms: this.cubeShader.uniforms,
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+ vertexShader: this.cubeShader.vertexShader,
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+ fragmentShader: this.cubeShader.fragmentShader,
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+ depthTest: false,
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+ depthWrite: false,
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+ side: BackSide
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+ } )
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+ );
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+
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+ this.envMap = envMap;
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+ this.opacity = ( opacity !== undefined ) ? opacity : 1.0;
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+
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+ this.cubeScene = new Scene();
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+ this.cubeCamera = new PerspectiveCamera();
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+ this.cubeScene.add( this.cubeMesh );
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+
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+};
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+
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+CubeTexturePass.prototype = Object.assign( Object.create( Pass.prototype ), {
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+
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+ constructor: CubeTexturePass,
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+
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+ render: function ( renderer, writeBuffer, readBuffer/*, deltaTime, maskActive*/ ) {
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+
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+ var oldAutoClear = renderer.autoClear;
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+ renderer.autoClear = false;
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+
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+ this.cubeCamera.projectionMatrix.copy( this.camera.projectionMatrix );
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+ this.cubeCamera.quaternion.setFromRotationMatrix( this.camera.matrixWorld );
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+
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+ this.cubeMesh.material.uniforms[ "tCube" ].value = this.envMap;
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+ this.cubeMesh.material.uniforms[ "opacity" ].value = this.opacity;
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+ this.cubeMesh.material.transparent = ( this.opacity < 1.0 );
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+
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+ renderer.setRenderTarget( this.renderToScreen ? null : readBuffer );
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+ if ( this.clear ) renderer.clear();
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+ renderer.render( this.cubeScene, this.cubeCamera );
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+
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+ renderer.autoClear = oldAutoClear;
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+
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+ }
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+
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+} );
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+
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+export { CubeTexturePass };
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