gl.js/blob/master/examples/motion-blur.html">Source code</a>
        </div>
    </div>
    <div id="blur-controls">
        Enable Motion Blur: <input id="blur-toggle" type="checkbox" checked>
    </div>
    <div id="slowmo-controls">
        Slow Motion: <input id="slowmo-toggle" type="checkbox">
    </div>
    <canvas id="gl-canvas"></canvas>
    <script type="x-shader/vs" id="vertex-velocity">
        #version 300 es

        layout(std140, column_major) uniform;

        layout(location=0) in vec4 posit