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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 Extension 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>
<canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
<div id="console"></div>
<script>
"use strict";
var pseudoRandom = (function() {
var seed = 3;
return function() {
seed = (seed * 11 + 17) % 25;
return seed / 25;
};
})();
var randomizeCase = function(str) {
var newChars = [];
for (var ii = 0; ii < str.length; ++ii) {
var c = str.substr(ii, 1);
var m = (pseudoRandom() > 0.5) ? c.toLowerCase() : c.toUpperCase();
newChars.push(m);
}
return newChars.join("");
};
description();
var wtu = WebGLTestUtils;
var canvas = document.getElementById("canvas");
var gl = wtu.create3DContext(canvas);
var ii;
debug("check every extension advertised can be enabled");
debug("");
var extensionNames = gl.getSupportedExtensions();
var extensionNamesLower = [];
for (ii = 0; ii < extensionNames.length; ++ii) {
extensionNamesLower.push(extensionNames[ii].toLowerCase());
}
for (ii = 0; ii < extensionNames.length; ++ii) {
var originalName = extensionNames[ii];
var mixedName = randomizeCase(originalName);
var extension = gl.getExtension(mixedName);
assertMsg(extension, "able to get " + originalName + " as " + mixedName);
if (extension) {
var kTestString = "this is a test";
var kTestNumber = 123;
var kTestFunction = function() { };
var kTestObject = { };
extension.testStringProperty = kTestString;
extension.testNumberProperty = kTestNumber;
extension.testFunctionProperty = kTestFunction;
extension.testObjectProperty = kTestObject;
webglHarnessCollectGarbage();
var extension2 = gl.getExtension(originalName);
assertMsg(
extension === extension2,
"calling getExtension twice for the same extension returns the same object");
assertMsg(
extension2.testStringProperty === kTestString &&
extension2.testFunctionProperty === kTestFunction &&
extension2.testObjectProperty === kTestObject &&
extension2.testNumberProperty === kTestNumber,
"object returned by 2nd call to getExtension has same properties");
var prefixedVariants = wtu.getExtensionPrefixedNames(originalName);
for (var jj = 0; jj < prefixedVariants.length; ++jj) {
assertMsg(
gl.getExtension(prefixedVariants[jj]) === null ||
extensionNamesLower.indexOf(prefixedVariants[jj].toLowerCase()) !== -1,
"getExtension('" + prefixedVariants[jj] + "') returns an object only if the name is returned by getSupportedExtensions");
}
}
debug("");
}
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
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