<!--
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 Context Release Test</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>
<iframe id="host" style="width: 256px; height: 256px; border: 0;"></iframe>
<div id="description"></div>
<div id="console"></div>
<script>
"use strict";
description("This test ensures that WebGL contexts are released properly when a worker is used");

var wtu = WebGLTestUtils;

var host = document.getElementById("host");
var testIterations = 25;
var currentIteration = 0;

function refreshFrame() {
  if(currentIteration < testIterations) {
    currentIteration++;
    debug("");
    debug("Test " + currentIteration + " of " + testIterations);
    host.src = "resources/context-release-child-with-worker.html";
  } else {
    finishTest();
  }
}

function testContext() {
  var gl = host.contentWindow.glContext;
  assertMsg(gl != null, "context was created properly");

  wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors");

  if(gl.canvas.width != gl.drawingBufferWidth ||
    gl.canvas.height != gl.drawingBufferHeight) {
    testFailed("Buffer was the wrong size: " +
        gl.drawingBufferWidth + "x" + gl.drawingBufferHeight);
  } else {
    testPassed("Buffer was the correct size: " +
        gl.drawingBufferWidth + "x" + gl.drawingBufferHeight);
    refreshFrame();
  }

  gl = null;
}

window.addEventListener("message", function(event) {
  if(event.data == "Ready") {
    testContext();
  }
});

refreshFrame();

var successfullyParsed = true;
</script>

</body>
</html>
