| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script>let additionalChromiumResources = ["resources/xr-internal-device-mocking.js"];</script> |
| <script src="/webxr/resources/webxr_util.js"></script> |
| <script src="/webxr/resources/webxr_test_constants.js"></script> |
| <script src="/webxr/resources/webxr_test_asserts.js"></script> |
| <canvas /> |
| |
| <script> |
| // While the logic of not handing out animation frames in certain scenarios is |
| // specced, the notion of what the browser does during those cases is not. |
| // This tests that blink appropriately reports throttled state to the browser |
| // process. Note that the throttled state is defined as being in a state where |
| // blink is not handing out poses to the page, but the page is properly set up. |
| let testName = |
| "Blink appropriately reports when frames are throttled"; |
| |
| let testFunction = function(session, fakeDeviceController, t) { |
| |
| // We need to yield some reasonable amount of time so that mojo messages can |
| // propagate. This provides a convinience method to do this via promises and |
| // timeouts. |
| function runAfterTimeout(callback, timeout = 100) { |
| return new Promise((resolve) => { |
| t.step_timeout(() => { |
| resolve(callback()); |
| }, timeout); |
| }); |
| } |
| |
| let service = navigator.xr.test.getService(); |
| fakeDeviceController.simulateVisibilityChange("hidden"); |
| |
| function onXRFrame() { |
| session.requestAnimationFrame(onXRFrame); |
| } |
| |
| return runAfterTimeout(() => { |
| assert_false(service.getFramesThrottled(), |
| "Without a frame loop, the page shouldn't be considered throttled"); |
| }) |
| .then(() => { |
| // Start a simple frame loop. |
| session.requestAnimationFrame(onXRFrame); |
| |
| return runAfterTimeout(() => { |
| assert_true(service.getFramesThrottled(), |
| "With a properly configured frame loop, and a hidden device state, " + |
| "the page should be considered throttled."); |
| }); |
| }) |
| .then(() => { |
| fakeDeviceController.simulateVisibilityChange("visible"); |
| |
| return runAfterTimeout(() => { |
| assert_false(service.getFramesThrottled(), |
| "While properly configured and visible, frames should not be throttled"); |
| }); |
| }); |
| }; |
| |
| xr_session_promise_test( |
| testName, testFunction, TRACKED_IMMERSIVE_DEVICE, 'immersive-vr'); |
| |
| </script> |
