test-utils.js"></script>

<script id="vs" type="x-shader/x-vertex">
attribute vec4 a_Position;
void main()
{
  gl_Position = a_Position;
}
</script>
<script id="fs" type="x-shader/x-fragment">
precision mediump float;
uniform vec4 u_draw_color;
void main()
{
  gl_FragColor = u_draw_color;
}
</script>

</head>
<body>
<canvas id="example" width="4" height="4"></canvas>
<div id="description"></div>
<div id="console"></div>

<script>
"use strict";

var wtu = WebGLTestUtils;
description("This test reproduces a d