File: test_webgl_force_enable.html

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<!DOCTYPE HTML>
<html>
<head>
<title>WebGL test: Check that WebGL works (or not) if it should (or should not).</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
<script src="driver-info.js"></script>
</head>
<body>
<canvas id="c"></canvas>
<script>

function test() {
  ok(SpecialPowers.getBoolPref('webgl.force-enabled'), 'WebGL should be force-enabled.');

  var shouldSucceed = true;
  var shouldFail = false;

  if (DriverInfo.getOS() == DriverInfo.OS.ANDROID &&
      DriverInfo.getOSVersion() < 15)
  {
    // Consider 'random'. Actually, ARMv6 fails, and ARMv7 succeeds, but we have
    // not been successful at determining this from JS. (see bug 917478)
    shouldSucceed = false;
    shouldFail = false;
  }

  var gl = c.getContext('webgl');
  if (shouldSucceed) {
    ok(gl, 'Expected WebGL creation to succeed.');
  }
  if (shouldFail) {
    ok(!gl, 'Expected WebGL creation to fail.');
  }

  SimpleTest.finish();
}

SimpleTest.waitForExplicitFinish();

var prefArrArr = [
  ['webgl.force-enabled', true]
];
var prefEnv = {'set': prefArrArr};
SpecialPowers.pushPrefEnv(prefEnv, test);

</script>
</body>
</html>