/script>
<script src="../../../js/webgl-test-utils.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";

const wtu = WebGLTestUtils;
description();

const gl = wtu.create3DContext(undefined, undefined, 2);

function* range(a, b) {
    a.required;
    if (b === undefined) {
        b = a;
        a = 0;
    }
    for (let i = a; i < b; i += 1) {
        yield i;
    }
}

const VS = `\
void main() {
    gl_PointSize = 1.0;
}
`;

const FS = `\
uniform sample