SCSS

HTML

<script src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/16327/gsap-latest-beta.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/109/three.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/locomotive-scroll@3.2.7/dist/locomotive-scroll.min.js"></script>
<div id="page-content">

<section class="section-test" data-scroll-section>
  <h1>Section 01</h1>
</section>

<section class="section-test" data-scroll-section>
  <h1>Section 02</h1>
</section>

<section class="section" data-scroll-section>

  <div id="canvas-projects"></div>

  <div class="p-slider | p-js-drag-area">
    <div class="p-slider__inner | p-js-slider">
      <div class="p-slide | p-js-slide">
        <div class="p-slide__inner | p-js-slide__inner">
          <img class="p-js-slide__img" src="https://images.unsplash.com/photo-1515898034510-821b204966e4?ixlib=rb-0.3.5&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=e471f614f6a3fc4636e162088988dcfe" alt=""
               crossorigin="anonymous" draggable="false">
        </div>
      </div>
      <div class="p-slide | p-js-slide" style="left: 120%;">
        <div class="p-slide__inner | p-js-slide__inner">
          <img class="p-js-slide__img" src="https://images.unsplash.com/photo-1515515332716-78b07ef2afc0?ixlib=rb-0.3.5&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=38f91da8907b841ddce070dcd3c24aa2" alt=""
               crossorigin="anonymous" draggable="false">
        </div>
      </div>
      <div class="p-slide | p-js-slide" style="left: 240%;">
        <div class="p-slide__inner | p-js-slide__inner">
          <img class="p-js-slide__img" src="https://images.unsplash.com/photo-1516563792456-57864571b2a1?ixlib=rb-0.3.5&q=85&fm=jpg&crop=entropy&cs=srgb&ixid=eyJhcHBfaWQiOjE0NTg5fQ&s=a1d08d5d28f1bcdfd27b5f1d1c0c1c43" alt=""
               crossorigin="anonymous" draggable="false">
        </div>
      </div>                
    </div>
  </div>

  <div class="p-titles">
    <div...

SCSS

$easeOutExpo: cubic-bezier(0.190, 1.000, 0.220, 1.000);

body{
  position: relative;
  background-color: #111;
  font-family: sans-serif;
}

* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

#page-content{
  position: relative;
}

.section{
  height: 100vh;
  position: relative;
}

.section-test{
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-transform: uppercase;
}


.dom-gl {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    //pointer-events: none;
    z-index: 1;
}

.p-slider {
    position: relative;
    padding: 0 22.5vw;
    display: flex;
    align-items: center;
    height: 100%;
    user-select: none;
    cursor: grab;
    z-index: 2;

    &__inner {
        display: flex;
        position: relative;
    }
}

.p-slide {
    overflow: hidden;

    &:first-child {
        position: relative;
    }

    &:not(:first-child) {
        position: absolute;
        top: 0;
        height: 100%;
    }

    &__inner {
        position: relative;
        overflow: hidden;
        width: 55vw;
        padding-top: 56.5%;
    }

    img {
        display: none;

        /*
    height: 100%;
    width: 140%;
    position: absolute;
    top: 0;
    left: -20%;
    object-fit: cover;
    will-change: transform;
    */
    }
}


.p-titles {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    overflow: hidden;
    pointer-events: auto;
    z-index: 9999999999;

    &__list {
        position: absolute;
        top: 0;
        left: 0;
    }

    &__title {
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 6vw;
        font-weight: bold;
        letter-spacing: -0.1vw;
        color: #fff;

        &--proxy {
            visibility: hidden;
        }
    }
}

.p-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0.25rem;
   ...

JavaScript

/* Locomotive Scroll */
window.addEventListener('load', () => {
  // handle smooth scroll and update planes positions
  const smoothScroll = new LocomotiveScroll({
    el: document.getElementById('page-content'),
    smooth: true,
    inertia: 0.7,
    passive: true,
    class: 'is-inview'
  });
});


const store = {
  ww: window.innerWidth,
  wh: window.innerHeight,
  isDevice:
    navigator.userAgent.match(/Android/i) ||
    navigator.userAgent.match(/webOS/i) ||
    navigator.userAgent.match(/iPhone/i) ||
    navigator.userAgent.match(/iPad/i) ||
    navigator.userAgent.match(/iPod/i) ||
    navigator.userAgent.match(/BlackBerry/i) ||
    navigator.userAgent.match(/Windows Phone/i)
};

class Slider {
  constructor(el, opts = {}) {
    this.bindAll();

    this.el = el;

    this.opts = Object.assign(
      {
        speed: 2,
        threshold: 50,
        ease: 0.075
      },
      opts
    );

    this.ui = {
      items: this.el.querySelectorAll('.p-js-slide'),
      titles: document.querySelectorAll('.p-js-title'),
      lines: document.querySelectorAll('.p-js-progress-line')
    };

    this.state = {
      target: 0,
      current: 0,
      currentRounded: 0,
      y: 0,
      on: {
        x: 0,
        y: 0
      },
      off: 0,
      progress: 0,
      diff: 0,
      max: 0,
      min: 0,
      snap: {
        points: []
      },
      flags: {
        dragging: false
      }
    };

    this.items = [];

    this.events = {
      move: store.isDevice ? 'touchmove' : 'mousemove',
      up: store.isDevice ? 'touchend' : 'mouseup',
      down: store.isDevice ? 'touchstart' : 'mousedown'
    };

    this.init();
  }

  bindAll() {
    ['onDown', 'onMove', 'onUp'].forEach(fn => (this[fn] = this[fn].bind(this)));
  }

  init() {
    return gsap.utils.pipe(this.setup(), this.on());
  }

  destroy() {
    this.off();
    this.state = null;
    this.items = null;
    this.opts = null;
    this.ui = null;
  }

  on() {
    const { move, up, down } =...