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<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/webxr_util.js"></script>
<script src="resources/webxr_test_constants.js"></script>
<canvas />
<script>
xr_promise_test("Ensure that XRWebGLLayer's constructor throws appropriate errors",
(t) => {
let webglCanvas = document.getElementsByTagName('canvas')[0];
let glAttributes = {
alpha: false,
antialias: false,
xrCompatible: false,
};
let gl = webglCanvas.getContext('webgl', glAttributes);
return navigator.xr.test.simulateDeviceConnection(TRACKED_IMMERSIVE_DEVICE)
.then(() => {
return navigator.xr.requestSession('inline')
.then((session) => {
try {
let webglLayerIncompatible = new XRWebGLLayer(session, gl);
} catch (err) {
assert_unreached("Inline XRWebGLLayers should not fail when created with a context that is not XRCompatible");
}
});
})
.then(() => {
return new Promise((resolve) => {
navigator.xr.test.simulateUserActivation(() => {
navigator.xr.requestSession('immersive-vr')
.then((session) => {
t.step_func(() => {
try {
let webglLayerIncompatible = new XRWebGLLayer(session, gl);
assert_unreached("XRWebGLLayer should fail when created with a context that is not XRCompatible")
} catch (err) {
assert_equals(err.name, "InvalidStateError");
}
})
gl.makeXRCompatible();
try {
let webglLayerGood = new XRWebGLLayer(session, gl);
} catch (err) {
reject("XRWebGLLayer should not fail with valid arguments");
}
let lose_context_ext = gl.getExtension('WEBGL_lose_context');
webglCanvas.addEventListener('webglcontextlost', (ev) => {
ev.preventDefault();
try {
let webglLayerBadContext = new XRWebGLLayer(session, gl);
reject("XRWebGLLayer should fail when created with a lost context");
} catch (err) {
assert_equals(err.name, 'InvalidStateError');
t.step_timeout(() => { lose_context_ext.restoreContext(); }, 100);
}
});
webglCanvas.addEventListener('webglcontextrestored', (ev) => {
resolve(session.end().then(() => {
try {
let webglLayerBadSession = new XRWebGLLayer(session, gl);
assert_unreached("XRWebGLLayer should fail when created with an ended session");
} catch (err) {
assert_equals(err.name, 'InvalidStateError');
}
}));
});
lose_context_ext.loseContext();
});
});
});
});
});
</script>
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