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<!--
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">
<title>WebGL gl.getParameter Strings Conformance Tests</title>
<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>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<canvas id="canvas" width="2" height="2"> </canvas>
<script>
"use strict";
description("This test checks getParameter returns strings in the correct format");
debug("");
debug("Canvas.getContext");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("canvas", null, 2);
if (!gl) {
testFailed("context does not exist");
} else {
testPassed("context exists");
debug("");
checkPrefix("WebGL 2.0", "VERSION");
checkPrefix("WebGL GLSL ES 3.00", "SHADING_LANGUAGE_VERSION");
shouldBeNonNull("gl.getParameter(gl.VENDOR)");
shouldBeNonNull("gl.getParameter(gl.RENDERER)");
shouldBe("gl.getError()", "gl.NO_ERROR");
}
function checkPrefix(expected, enum_val) {
var s = gl.getParameter(gl[enum_val]);
if (s != null &&
s.length >= expected.length &&
s.substring(0, expected.length) == expected) {
testPassed("getParameter(gl." + enum_val + ") correctly started with " + expected);
} else {
testFailed("getParameter(gl." + enum_val + ") did not start with " + expected);
}
}
debug("");
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
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