# AfterimageShader ## Import AfterimageShader is an addon, and must be imported explicitly, see [Installation#Addons](https://threejs.org/manual/#en/installation). ```js import { AfterimageShader } from 'three/addons/shaders/AfterimageShader.js'; ``` ## Properties ### .AfterimageShader : ShaderMaterial~Shader (inner, constant) Inspired by [Three.js FBO motion trails](https://codepen.io/brunoimbrizi/pen/MoRJaN?page=1&). ## Source [examples/jsm/shaders/AfterimageShader.js](https://github.com/mrdoob/three.js/blob/master/examples/jsm/shaders/AfterimageShader.js)