<!--
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
-->

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../js/js-test-pre.js"></script>
<script src="../../js/webgl-test-utils.js"></script>
<script id="vshader" type="x-shader/x-vertex">
void main()
{
    gl_PointSize = 1.0;
    gl_Position = vec4(0.0, 0.0, 0.0, 1.0);
}
</script>

<script id="fshader" type="x-shader/x-fragment">
precision mediump float;

void main()
{
    gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
}
</script>
</head>
<body>
<canvas id="testbed" width="1" height="1" style="width: 100px; height: 100px;"></canvas>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description('Verify that drawing a point without enabling any attributes succeeds');

var wtu = WebGLTestUtils;
var gl = wtu.create3DContext('testbed');

var program1 = wtu.setupProgram(gl, ['vshader', 'fshader']);

debug('Draw a point with a shader that takes no attributes and verify it fills the whole canvas.');

gl.drawArrays(gl.POINTS, 0, 1);
wtu.glErrorShouldBe(gl, gl.NO_ERROR);
wtu.checkCanvas(gl, [0, 255, 0, 255]);

var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>

</body>
</html>
