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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">
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<script src="../../js/js-test-pre.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
function getWebGL(attribs) {
var canvas = document.createElement("canvas");
if (!canvas)
return null;
// We can't use wtu.create3DContext because it defaults to antialias=false.
var names = ["webgl2"];
var gl = null;
for (var i = 0; i < names.length; ++i) {
try {
gl = canvas.getContext(names[i], attribs);
} catch (e) {
}
if (gl) {
break;
}
}
if (!gl)
return null;
return gl;
}
function testAttribs(attribs) {
var antialias, depth, stencil;
if (!attribs) {
antialias = true;
depth = true;
stencil = false;
debug("Testing default attributes: { antialias: true, depth: true, stencil:false }");
} else {
antialias = attribs.antialias;
depth = attribs.depth;
stencil = attribs.stencil;
debug("Testing specified attributes: { antialias: " + antialias + ", depth: " + depth + ", stencil: " + stencil + " }");
}
var gl = getWebGL(attribs);
if (!gl) {
testFailed("Fail to create a context");
return;
}
var actual_attribs = gl.getContextAttributes();
if (antialias != actual_attribs.antialias)
testFailed("antialias = " + antialias + " is not obeyed")
if (depth != actual_attribs.depth)
testFailed("depth = " + depth + " is not obeyed")
if (stencil != actual_attribs.stencil)
testFailed("stencil = " + stencil + " is not obeyed")
if (antialias == actual_attribs.antialias &&
depth == actual_attribs.depth &&
stencil == actual_attribs.stencil) {
testPassed("Context created with the correct antialias, depth, and stencil.");
}
}
description('Verify WebGLContextAttributes are working as specified, including depth, stencil, antialias');
testAttribs(null); // Default attribs
testAttribs({antialias: true, depth: true, stencil: true});
testAttribs({antialias: false, depth: true, stencil: true});
testAttribs({antialias: true, depth: false, stencil: true});
testAttribs({antialias: false, depth: false, stencil: true});
testAttribs({antialias: true, depth: true, stencil: false});
testAttribs({antialias: false, depth: true, stencil: false});
testAttribs({antialias: true, depth: false, stencil: false});
testAttribs({antialias: false, depth: false, stencil: false});
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
|
