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+<!--
+
+/*
+** Copyright (c) 2012 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+-->
+
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>WebGL drawElements Test</title>
+<link rel="stylesheet" href="../../resources/js-test-style.css"/>
+<script src="../../js/desktop-gl-constants.js"></script>
+<script src="../../js/js-test-pre.js"></script>
+<script src="../../js/webgl-test-utils.js"> </script>
+</head>
+<body>
+<canvas id="example" width="50" height="50"></canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+attribute vec4 vPosition;
+void main()
+{
+    gl_Position = vPosition;
+}
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+void main()
+{
+    gl_FragColor = vec4(1.0,0.0,0.0,1.0);
+}
+</script>
+
+<script>
+"use strict";
+function init()
+{
+    description(document.title);
+
+    function checkDrawElements(mode, count, type, expect, msg) {
+        gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
+        gl.drawElements(mode, count, type, 0);
+        wtu.glErrorShouldBe(gl, expect, msg);
+    }
+
+    var wtu = WebGLTestUtils;
+    var gl = wtu.create3DContext("example");
+    var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]);
+
+    var vertexObject = gl.createBuffer();
+    gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
+    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0.5,0 ]), gl.STATIC_DRAW);
+    gl.enableVertexAttribArray(0);
+
+    checkDrawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT,
+                      gl.INVALID_OPERATION, "gl.DrawElements with no buffer attached to VAO should return INVALID_OPERATION");
+
+    gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
+
+    var vertexObject = gl.createBuffer();
+    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, vertexObject);
+    gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array([ 0, 1, 2]), gl.STATIC_DRAW);
+
+    checkDrawElements(gl.TRIANGLES, 3, gl.UNSIGNED_SHORT,
+                      gl.NO_ERROR, "can call gl.DrawElements with UNSIGNED_SHORT");
+
+    var vertexObject = gl.createBuffer();
+    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, vertexObject);
+    gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint8Array([ 0, 1, 2, 0]), gl.STATIC_DRAW);
+
+    checkDrawElements(
+        gl.TRIANGLES, 3, gl.UNSIGNED_BYTE,
+        gl.NO_ERROR, "can call gl.DrawElements with UNSIGNED_BYTE");
+    checkDrawElements(
+        desktopGL['QUAD_STRIP'], 4, gl.UNSIGNED_BYTE,
+        gl.INVALID_ENUM, "gl.DrawElements with QUAD_STRIP should return INVALID_ENUM");
+    checkDrawElements(
+        desktopGL['QUADS'], 4, gl.UNSIGNED_BYTE,
+        gl.INVALID_ENUM, "gl.DrawElements with QUADS should return INVALID_ENUM");
+    checkDrawElements(
+        desktopGL['POLYGON'], 4, gl.UNSIGNED_BYTE,
+        gl.INVALID_ENUM, "gl.DrawElements with POLYGON should return INVALID_ENUM");
+
+    var vertexObject = gl.createBuffer();
+    gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, vertexObject);
+    gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint32Array([ 0, 1, 2]), gl.STATIC_DRAW);
+    checkDrawElements(
+        gl.TRIANGLES, 3, gl.UNSIGNED_INT,
+        wtu.getDefault3DContextVersion() > 1 ? gl.NO_ERROR : gl.INVALID_ENUM,
+        "gl.DrawElements should return INVALID_ENUM with UNSIGNED_INT");
+    checkDrawElements(
+        gl.TRIANGLES, 3, gl.FLOAT,
+        gl.INVALID_ENUM, "gl.DrawElements should return INVALID_ENUM with FLOAT");
+    checkDrawElements(
+        gl.TRIANGLES, 3, gl.SHORT,
+        gl.INVALID_ENUM, "gl.DrawElements should return INVALID_ENUM with SHORT");
+}
+
+init();
+var successfullyParsed = true;
+</script>
+<script src="../../js/js-test-post.js"></script>
+
+</body>
+</html>