Untitled

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, maximum-scale=1, user-scalable=no"/>
    <title>Screenshot Test</title>
    <style>
      html, body {
        height: 100%;
        width: 100%;
      }

      .controls {
        position: absolute;
        bottom: 0;
        background: white;
        z-index: 1000;
      }
      .error {
        color: red;
      }
    </style>
  </head>
  <body>
    <canvas id="xrcanvas"></canvas>
    <div class="controls">
        <button id="shotbutton">Take Screenshot</button>
        <h2 id="output"></h2>
    </div>

    <script src="//cdn.8thwall.com/web/xrextras/xrextras.js"></script>
    <script async src="//apps.8thwall.com/xrweb?appKey=XXXXXXXX"></script>

    <script>
      const canvas = document.querySelector('#xrcanvas')
      const shotButton = document.querySelector('#shotbutton')
      const outputEl = document.querySelector('#output')
      let numShots = 0
      const onxrloaded = () => {
        XR.addCameraPipelineModules([
          XR.GlTextureRenderer.pipelineModule(),
          XRExtras.FullWindowCanvas.pipelineModule(), // Error occurs more often with full screen enabled
          XR.canvasScreenshot().cameraPipelineModule(),
        ])
        XR.run({ canvas })
        shotButton.addEventListener('click', () => {
          XR.canvasScreenshot().takeScreenshot().then(
            data => {
              numShots++
              outputEl.innerHTML = `${numShots} Screenshots Complete`
              outputEl.classList.remove('error')
            },
            error => {
              outputEl.innerHTML = error.message
              outputEl.classList.add('error')
            })
        })
      }
      window.XR ? onxrloaded() : window.addEventListener('xrloaded', onxrloaded)
    </script>
  </body>
</html>