Initial commit

HTML/ThreeJS/node_modules/three/examples/js/postprocessing/AfterimagePass.js

@@ -0,0 +1,74 @@
+( function () {
+
+	class AfterimagePass extends THREE.Pass {
+
+		constructor( damp = 0.96 ) {
+
+			super();
+			if ( THREE.AfterimageShader === undefined ) console.error( 'THREE.AfterimagePass relies on THREE.AfterimageShader' );
+			this.shader = THREE.AfterimageShader;
+			this.uniforms = THREE.UniformsUtils.clone( this.shader.uniforms );
+			this.uniforms[ 'damp' ].value = damp;
+			this.textureComp = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, {
+				minFilter: THREE.LinearFilter,
+				magFilter: THREE.NearestFilter,
+				format: THREE.RGBAFormat
+			} );
+			this.textureOld = new THREE.WebGLRenderTarget( window.innerWidth, window.innerHeight, {
+				minFilter: THREE.LinearFilter,
+				magFilter: THREE.NearestFilter,
+				format: THREE.RGBAFormat
+			} );
+			this.shaderMaterial = new THREE.ShaderMaterial( {
+				uniforms: this.uniforms,
+				vertexShader: this.shader.vertexShader,
+				fragmentShader: this.shader.fragmentShader
+			} );
+			this.compFsQuad = new THREE.FullScreenQuad( this.shaderMaterial );
+			const material = new THREE.MeshBasicMaterial();
+			this.copyFsQuad = new THREE.FullScreenQuad( material );
+
+		}
+
+		render( renderer, writeBuffer, readBuffer
+			/*, deltaTime, maskActive*/
+		) {
+
+			this.uniforms[ 'tOld' ].value = this.textureOld.texture;
+			this.uniforms[ 'tNew' ].value = readBuffer.texture;
+			renderer.setRenderTarget( this.textureComp );
+			this.compFsQuad.render( renderer );
+			this.copyFsQuad.material.map = this.textureComp.texture;
+
+			if ( this.renderToScreen ) {
+
+				renderer.setRenderTarget( null );
+				this.copyFsQuad.render( renderer );
+
+			} else {
+
+				renderer.setRenderTarget( writeBuffer );
+				if ( this.clear ) renderer.clear();
+				this.copyFsQuad.render( renderer );
+
+			} // Swap buffers.
+
+
+			const temp = this.textureOld;
+			this.textureOld = this.textureComp;
+			this.textureComp = temp; // Now textureOld contains the latest image, ready for the next frame.
+
+		}
+
+		setSize( width, height ) {
+
+			this.textureComp.setSize( width, height );
+			this.textureOld.setSize( width, height );
+
+		}
+
+	}
+
+	THREE.AfterimagePass = AfterimagePass;
+
+} )();