->
<script src="../../resources/webgl-utils.js"></script>
<script src="../../resources/lessons-helper.js"></script> <!-- you can and should delete this script. it is only used on the site to help with errors -->
<script src="../../resources/twgl-full.min.js"></script>
<script id="vertexColorVertexShader" type="text/something-not-javascript">
attribute vec4 position;
attribute vec4 color;
uniform mat4 u_worldViewProjection;
varying vec4 v_color;
void main() {
  gl_Position = u_worldViewProjection * position;