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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 initial values 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 the initial value of the OpenGL state");
debug("");
debug("Canvas.getContext");
var wtu = WebGLTestUtils;
var gl = wtu.create3DContext("canvas");
if (!gl) {
testFailed("context does not exist");
} else {
testPassed("context exists");
debug("");
checkParameterInitialValue("ONE", "BLEND_SRC_RGB");
checkParameterInitialValue("ONE", "BLEND_SRC_ALPHA");
checkParameterInitialValue("ZERO", "BLEND_DST_RGB");
checkParameterInitialValue("ZERO", "BLEND_DST_ALPHA");
shouldBe("gl.getError()", "gl.NO_ERROR");
}
function checkParameterInitialValue(expected, enum_val) {
var s = gl.getParameter(gl[enum_val]);
if (s === gl[expected]) {
testPassed("getParameter(gl." + enum_val + ") returned " + expected + " which is " + gl[expected]);
} else {
testFailed("getParameter(gl." + enum_val + ") returned " + s + " expected: " + expected + " which is " + gl[expected]);
}
}
debug("");
var successfullyParsed = true;
</script>
<script src="../../js/js-test-post.js"></script>
</body>
</html>
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