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103 lines
2.3 KiB
JavaScript
103 lines
2.3 KiB
JavaScript
import {
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LinearFilter,
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MeshBasicMaterial,
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NearestFilter,
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RGBAFormat,
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ShaderMaterial,
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UniformsUtils,
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WebGLRenderTarget
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} from '../../../build/three.module.js';
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import { Pass } from '../postprocessing/Pass.js';
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import { AfterimageShader } from '../shaders/AfterimageShader.js';
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var AfterimagePass = function ( damp ) {
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Pass.call( this );
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if ( AfterimageShader === undefined )
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console.error( 'THREE.AfterimagePass relies on AfterimageShader' );
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this.shader = AfterimageShader;
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this.uniforms = UniformsUtils.clone( this.shader.uniforms );
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this.uniforms[ 'damp' ].value = damp !== undefined ? damp : 0.96;
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this.textureComp = new WebGLRenderTarget( window.innerWidth, window.innerHeight, {
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minFilter: LinearFilter,
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magFilter: NearestFilter,
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format: RGBAFormat
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} );
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this.textureOld = new WebGLRenderTarget( window.innerWidth, window.innerHeight, {
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minFilter: LinearFilter,
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magFilter: NearestFilter,
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format: RGBAFormat
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} );
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this.shaderMaterial = new ShaderMaterial( {
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uniforms: this.uniforms,
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vertexShader: this.shader.vertexShader,
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fragmentShader: this.shader.fragmentShader
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} );
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this.compFsQuad = new Pass.FullScreenQuad( this.shaderMaterial );
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var material = new MeshBasicMaterial();
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this.copyFsQuad = new Pass.FullScreenQuad( material );
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};
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AfterimagePass.prototype = Object.assign( Object.create( Pass.prototype ), {
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constructor: AfterimagePass,
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render: function ( renderer, writeBuffer, readBuffer ) {
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this.uniforms[ 'tOld' ].value = this.textureOld.texture;
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this.uniforms[ 'tNew' ].value = readBuffer.texture;
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renderer.setRenderTarget( this.textureComp );
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this.compFsQuad.render( renderer );
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this.copyFsQuad.material.map = this.textureComp.texture;
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if ( this.renderToScreen ) {
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renderer.setRenderTarget( null );
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this.copyFsQuad.render( renderer );
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} else {
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renderer.setRenderTarget( writeBuffer );
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if ( this.clear ) renderer.clear();
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this.copyFsQuad.render( renderer );
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}
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// Swap buffers.
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var temp = this.textureOld;
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this.textureOld = this.textureComp;
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this.textureComp = temp;
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// Now textureOld contains the latest image, ready for the next frame.
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},
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setSize: function ( width, height ) {
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this.textureComp.setSize( width, height );
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this.textureOld.setSize( width, height );
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}
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} );
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export { AfterimagePass };
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