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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>
<script src="resources/webxr_test_asserts.js"></script>
<script>
let testName = "VisibilityMaskChangeEvent properly fires with expected values";
let fakeViews = [{
eye:"left",
viewOffset: LEFT_OFFSET,
resolution: VALID_RESOLUTION,
fieldOfView: VALID_FIELD_OF_VIEW,
// The webxr-test-api requires that we still set this for now, but it is
// supposed to be ignored.
projectionMatrix: IDENTITY_MATRIX
}, {
eye:"right",
viewOffset: RIGHT_OFFSET,
resolution: VALID_RESOLUTION,
fieldOfView: VALID_FIELD_OF_VIEW,
// The webxr-test-api requires that we still set this for now, but it is
// supposed to be ignored.
projectionMatrix: IDENTITY_MATRIX
},
];
const leftMask = {
vertices: [ 0, 0, 0, 1, 1, 0, 1, 1 ],
indices: [0, 1, 2, 0, 2, 3]
};
const rightMask = {
vertices: [ 1, 1, 1, 2, 2, 1, 2, 2 ],
indices: [0, 2, 3, 0, 1, 2]
};
let fakeDeviceInitParams = {
supportsImmersive: true,
supportedModes: ["inline", "immersive-vr"],
views: fakeViews,
viewerOrigin: IDENTITY_TRANSFORM,
supportedFeatures: ALL_FEATURES
};
function assert_list_approx_equals(actual, expected, prefix) {
assert_equals(expected.length, actual.length, prefix + ": lengths not equal");
for (let i = 0; i < expected.length; i++) {
assert_approx_equals(actual[i], expected[i], FLOAT_EPSILON, prefix +
": mismatch in list at component: " + i +
", expected=" + expected, " actual=" + actual);
}
}
function validateMask(fakeView, mask) {
assert_equals(mask.eye, fakeView.eye);
assert_list_approx_equals(mask.vertices, fakeView.visibilityMask.vertices, fakeView.eye);
assert_list_approx_equals(mask.indices, fakeView.visibilityMask.indices, fakeView.eye);
}
let testFunction = function(session, fakeDeviceController, t) {
let eventWatcher = new EventWatcher(t, session, ["watcherdone"]);
let visibilityMaskEvents = 0;
session.addEventListener('visibilitymaskchange', (mask)=> {
visibilityMaskEvents++;
t.step(() => {
assert_equals(mask.session, session);
assert_less_than(mask.index, fakeViews.length, "Received an unexpected view");
validateMask(fakeViews[mask.index], mask);
if (visibilityMaskEvents >= 2) {
session.dispatchEvent(new Event("watcherdone"))
}
});
});
// We *could* set the visibilityMasks on the views by default; but UAs do not
// HAVE to, but MAY send events during the session resolution. By setting this
// after the session is resolved and the event is subscribed, we ensure we
// don't miss the event due to UA allowable differences.
fakeViews[0].visibilityMask = leftMask;
fakeViews[1].visibilityMask = rightMask;
fakeDeviceController.setViews(fakeViews);
// We don't need to do anything on the next animation frame, the act of
// requesting it after we update the views should be enough to trigger our
// events.
session.requestAnimationFrame(()=>{});
return eventWatcher.wait_for(["watcherdone"]);
};
xr_session_promise_test(
testName, testFunction, fakeDeviceInitParams, 'immersive-vr');
</script>
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