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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>
let testName = "inlineVerticalFieldOfView is set appropriately on inline sessions";
let fakeDeviceInitParams = VALID_NON_IMMERSIVE_DEVICE;
// These are the min, max, and default from the WebXR Spec
let minFOV = 0.0;
let maxFOV = Math.PI;
let defaultFOV = Math.PI/2;
function assertNotEquals(n1, n2, message) {
assert_greater_than(Math.abs(n1-n2), FLOAT_EPSILON, message);
}
let testFunction = function(session, fakeDeviceController, t) {
// Helper method because the renderState does not (per the spec) get updated
// until the next rAF after it was updated, so this method returns a promise
// which will resolve when the updated state should be applied.
function updateAndApplyInlineFOV(fov) {
session.updateRenderState({
inlineVerticalFieldOfView: fov
});
return new Promise((resolve, reject) => {
session.requestAnimationFrame(() => { resolve(); });
});
}
// Helper method to keep the line length reasonable with a long attribute name
// and ensure that the nullable value actually has a value.
function getFOV() {
let fov = session.renderState.inlineVerticalFieldOfView;
t.step(() => {
assert_not_equals(fov, null);
});
return fov;
}
return new Promise((resolve, reject) => {
// Begin by validating that the default is set as expected/specced.
t.step(() => {
assert_approx_equals(getFOV(), defaultFOV, FLOAT_EPSILON, "default");
});
// Set something below min, and assert that it is not set below the min,
// and significantly different from the default.
updateAndApplyInlineFOV(-10).then(() => {
t.step(() => {
let currentFOV = getFOV();
assert_greater_than(currentFOV, minFOV, "FOV must be set to something greater than min");
assert_less_than(currentFOV, maxFOV, "FOV must be set to something less than max");
assertNotEquals(currentFOV, defaultFOV, "FOV should no longer be set to the default");
});
// Set something above the max and assert that it is set to the max.
updateAndApplyInlineFOV(10).then(()=> {
t.step(()=> {
let currentFOV = getFOV();
assert_greater_than(currentFOV, minFOV, "FOV must be set to something greater than min");
assert_less_than(currentFOV, maxFOV, "FOV must be set to something less than max");
assertNotEquals(currentFOV, defaultFOV, "FOV should not be set to the default");
});
// Set to something reasonable and assert that the value gets set.
let normalFOV = 1.5;
updateAndApplyInlineFOV(normalFOV).then(() => {
t.step(() => {
assert_approx_equals(getFOV(), normalFOV, FLOAT_EPSILON, "FOV within min and max should get set");
});
resolve();
});
});
});
});
};
xr_session_promise_test(
testName, testFunction, fakeDeviceInitParams, 'inline');
</script>
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