test_webgl_request_mismatch.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<html>

<head>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<link rel="stylesheet" href="/tests/SimpleTest/test.css">

</head>

<body>

<script>

WEBGL_TYPES = {};

WEBGL_TYPES['experimental-webgl'] = true;

WEBGL_TYPES.webgl = true;

function AreBothIn(a, b, set) {

    return (a in set) && (b in set);

function IsAlias(typeA, typeB) {

    if (typeA == typeB)

        return true;

    if (AreBothIn(typeA, typeB, WEBGL_TYPES))

        return true;

    return false;

function TestContextRetrieval(creationType, requestType, functionalTypeSet) {

    var canvas = document.createElement('canvas');

    var createdGL = canvas.getContext(creationType);

    var didCreationSucceed = (createdGL != null);

    if (creationType in functionalTypeSet) {

        ok(createdGL, 'Context creation should succeed for type \'' +

                      creationType + '\'');

    } else {

        ok(!createdGL, 'Context creation should fail for type \'' +

                       creationType + '\'');

        return;

    var requestedGL = canvas.getContext(requestType);

    if (requestType in functionalTypeSet &&

        IsAlias(creationType, requestType))

        ok(requestedGL, 'Request for \'' + requestType + '\' from \'' +

                        creationType + '\' should succeed.');

        ok(requestedGL == createdGL, 'Request for \'' + requestType +

                                     '\' from \'' + creationType +

                                     '\' should match.');

    } else {

        ok(!requestedGL, 'Request for \'' + requestType + '\' from \'' +

                         creationType + '\' should fail.');

function IsWebGLFunctional() {

    var canvas = document.createElement('canvas');

    return canvas.getContext('experimental-webgl') != null;

function IsWebGLConformant() {

    var canvas = document.createElement('canvas');

    return canvas.getContext('webgl') != null;

var typeList = ['2d', 'experimental-webgl', 'webgl'];

var functionalTypeSet = {};

functionalTypeSet['2d'] = true;

if (IsWebGLFunctional())

    functionalTypeSet['experimental-webgl'] = true;

if (IsWebGLConformant())

    functionalTypeSet.webgl = true;

for (var i in typeList) {

    var creationType = typeList[i];

    for (var j in typeList) {

        var requestType = typeList[j];

        TestContextRetrieval(creationType, requestType, functionalTypeSet);

</script>

</body>

</html>