Barrel-distortion

import { Ob } from "negl";
import vertexShader from "./vertex.glsl";
import fragmentShader from "./fragment.glsl";

export default class extends Ob {
  setupUniforms() {
    const uniforms = super.setupUniforms();
    uniforms.uLevel = { value: 1 };
    return uniforms;
  }
  setupVertex() {
    return vertexShader;
  }
  setupFragment() {
    return fragmentShader;
  }
  debug(folder) {
    folder
      .add(this.uniforms.uLevel, "value", 0, 3, 0.1)
      .name("uLevel")
      .listen();
  }
}