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75 lines
2.1 KiB
75 lines
2.1 KiB
2 years ago
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( function () {
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class AfterimagePass extends THREE.Pass {
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constructor( damp = 0.96 ) {
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super();
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if ( THREE.AfterimageShader === undefined ) console.error( 'THREE.AfterimagePass relies on THREE.AfterimageShader' );
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this.shader = THREE.AfterimageShader;
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this.uniforms = THREE.UniformsUtils.clone( this.shader.uniforms );
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this.uniforms[ 'damp' ].value = damp;
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this.textureComp = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, {
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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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this.textureOld = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, {
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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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this.shaderMaterial = new THREE.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 THREE.FullScreenQuad( this.shaderMaterial );
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const material = new THREE.MeshBasicMaterial();
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this.copyFsQuad = new THREE.FullScreenQuad( material );
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}
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render( renderer, writeBuffer, readBuffer
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/*, deltaTime, maskActive*/
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) {
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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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} // Swap buffers.
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const temp = this.textureOld;
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this.textureOld = this.textureComp;
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this.textureComp = temp; // Now textureOld contains the latest image, ready for the next frame.
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}
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setSize( 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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THREE.AfterimagePass = AfterimagePass;
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} )();
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