The following page throws an Uncaught ReferenceError when loaded on a machine that is not capable of a proper WebVR experience (due to f.e. lacking a valid headset).
It uses the latest preview of Babylon, and appears to have been introduced around 8 hours ago (as of writing) in Commit 6c006a. The full stacktrace points to this line.
I cannot seem to get a repro case in the BJS Playground - perhaps a difference between versions that the Playground uses and elsewhere?
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Babylon.js Uncaught</title>
<!-- Babylon.js -->
<script src="https://code.jquery.com/pep/0.4.2/pep.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.6.2/dat.gui.min.js"></script>
<script src="https://preview.babylonjs.com/ammo.js"></script>
<script src="https://preview.babylonjs.com/cannon.js"></script>
<script src="https://preview.babylonjs.com/recast.js"></script>
<script src="https://preview.babylonjs.com/Oimo.js"></script>
<script src="https://preview.babylonjs.com/gltf_validator.js"></script>
<script src="https://preview.babylonjs.com/earcut.min.js"></script>
<script src="https://preview.babylonjs.com/babylon.max.js"></script>
<script src="https://preview.babylonjs.com/inspector/babylon.inspector.bundle.js"></script>
<script src="https://preview.babylonjs.com/materialsLibrary/babylonjs.materials.min.js"></script>
<script src="https://preview.babylonjs.com/proceduralTexturesLibrary/babylonjs.proceduralTextures.min.js"></script>
<script src="https://preview.babylonjs.com/postProcessesLibrary/babylonjs.postProcess.min.js"></script>
<script src="https://preview.babylonjs.com/loaders/babylonjs.loaders.js"></script>
<script src="https://preview.babylonjs.com/serializers/babylonjs.serializers.min.js"></script>
<script src="https://preview.babylonjs.com/gui/babylon.gui.min.js"></script>
<style>
html,
body {
overflow: hidden;
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#renderCanvas {
width: 100%;
height: 100%;
touch-action: none;
}
</style>
</head>
<body>
<canvas id="renderCanvas"></canvas>
<script>
var canvas = document.getElementById("renderCanvas");
var engine = new BABYLON.Engine(canvas, true, { preserveDrawingBuffer: true, stencil: true });
var scene = new BABYLON.Scene(engine);
var vrhelper = scene.createDefaultVRExperience(); // BUG STARTS HERE
engine.runRenderLoop(function () {
if (scene) {
scene.render();
}
});
// Resize
window.addEventListener("resize", function () {
engine.resize();
});
</script>
</body>
</html>