test_canvas_size.html

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<!DOCTYPE HTML>

<html>

<head>

  <meta charset='UTF-8'>

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

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

</head>

<title>WebGL test: Framebuffer maximum size test. (Bug 1290333)</title>

<body>

<script>

function TestSize(contextName, testSize) {

  var attributes = {

    antialias: false,

};

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

  var gl = canvas.getContext(contextName, attributes);

  if (!gl) {

    todo(false, contextName + 'is unavailable.');

    return;

  gl.canvas.width = testSize;

  gl.canvas.height = testSize;

  ok(true, contextName + 'test complete.');

function run() {

  TestSize('webgl', 16384);

  TestSize('webgl2', 16384);

  ok(true, 'Test complete.');

  SimpleTest.finish();

////////////////////////////////////////

SimpleTest.waitForExplicitFinish();

try {

  var prefPairList = [

    ['webgl.force-enabled', true],

];

  var prefEnv = {'set': prefPairList};

  SpecialPowers.pushPrefEnv(prefEnv, run);

} catch (e) {

  warning('No SpecialPowers, but trying WebGL2 anyway...');

  run();

</script>

</body>

</html>