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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 GLSL Conformance Tests</title>
+<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
+<link rel="stylesheet" href="../../../resources/glsl-feature-tests.css"/>
+<script src="../../../js/js-test-pre.js"></script>
+<script src="../../../js/webgl-test-utils.js"></script>
+<script src="../../../js/glsl-conformance-test.js"></script>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vertexShaderNoVarying" type="text/something-not-javascript">
+void main()
+{
+    gl_Position = vec4(0,0,0,0);
+}
+</script>
+<script id="vertexShaderUnusedVarying" type="text/something-not-javascript">
+varying vec4 v_varying;
+
+void main()
+{
+    gl_Position = vec4(0,0,0,0);
+}
+</script>
+<script id="vertexShaderUsedVarying" type="text/something-not-javascript">
+varying vec4 v_varying;
+
+void main()
+{
+    gl_Position = v_varying;
+}
+</script>
+<script id="fragmentShaderUnusedVarying" type="text/something-not-javascript">
+precision mediump float;
+
+varying vec4 v_varying;
+
+void main()
+{
+    gl_FragColor = vec4(0,0,0,0);
+}
+</script>
+<script id="fragmentShaderUsedVarying" type="text/something-not-javascript">
+precision mediump float;
+
+varying vec4 v_varying;
+
+void main()
+{
+    gl_FragColor = v_varying;
+}
+</script>
+<script>
+// GLSL 1.0.17 4.3.5
+"use strict";
+GLSLConformanceTester.runTests([
+  {
+    vShaderId: "vertexShaderNoVarying",
+    vShaderSuccess: true,
+    fShaderId: "fragmentShaderUnusedVarying",
+    fShaderSuccess: true,
+    linkSuccess: true,
+    passMsg: "vertex shader with no varying and fragment shader with unused varying must succeed",
+  },
+  {
+    vShaderId: "vertexShaderNoVarying",
+    vShaderSuccess: true,
+    fShaderId: "fragmentShaderUsedVarying",
+    fShaderSuccess: true,
+    linkSuccess: false,
+    passMsg: "vertex shader with no varying and fragment shader with used varying must fail",
+  },
+  {
+    vShaderId: "vertexShaderUnusedVarying",
+    vShaderSuccess: true,
+    fShaderId: "fragmentShaderUnusedVarying",
+    fShaderSuccess: true,
+    linkSuccess: true,
+    passMsg: "vertex shader with unused varying and fragment shader with unused varying must succeed",
+  },
+  {
+    vShaderId: "vertexShaderUnusedVarying",
+    vShaderSuccess: true,
+    fShaderId: "fragmentShaderUsedVarying",
+    fShaderSuccess: true,
+    linkSuccess: true,
+    passMsg: "vertex shader with unused varying and fragment shader with used varying must succeed",
+  },
+]);
+var successfullyParsed = true;
+</script>
+</body>
+</html>