| <!DOCTYPE html> |
| <script src="../resources/testharness.js"></script> |
| <script src="../resources/testharnessreport.js"></script> |
| <script src="file:///gen/layout_test_data/mojo/public/js/mojo_bindings.js"></script> |
| <script src="file:///gen/device/vr/public/mojom/vr_service.mojom.js"></script> |
| <script src="../xr/resources/xr-device-mocking.js"></script> |
| <script src="../xr/resources/xr-test-utils.js"></script> |
| <script src="../xr/resources/test-constants.js"></script> |
| <canvas id="webgl-canvas"></canvas> |
| |
| <script> |
| let fakeDevices = fakeXRDevices(); |
| |
| xr_session_promise_test( (session) => new Promise((resolve, reject) => { |
| // Session must have a baseLayer or else frame requests will be ignored. |
| let webglLayer = new XRWebGLLayer(session, gl); |
| session.baseLayer = webglLayer; |
| |
| function onSkipFrame(time, xrFrame) { |
| assert_equals(getSubmitFrameCount(), 0); |
| assert_equals(getMissingFrameCount(), 0); |
| // No GL commands issued. |
| session.requestAnimationFrame(onDrawToCanvas); |
| } |
| |
| function onDrawToCanvas(time, xrFrame) { |
| // Ensure the previous step did not submit a frame. |
| assert_equals(getSubmitFrameCount(), 0); |
| assert_equals(getMissingFrameCount(), 1); |
| |
| // Clear the canvas, but don't touch the framebuffer. |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| session.requestAnimationFrame(onDrawToFramebuffer); |
| } |
| |
| function onDrawToFramebuffer(time, xrFrame) { |
| // Ensure both previous steps did not submit frames. |
| assert_equals(getSubmitFrameCount(), 0); |
| assert_equals(getMissingFrameCount(), 2); |
| |
| // Clear the VRWebGLLayer framebuffer. |
| gl.bindFramebuffer(gl.FRAMEBUFFER, webglLayer.framebuffer); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| |
| // After the function returns ensure the frame was submitted. |
| window.setTimeout(() => { |
| assert_equals(getSubmitFrameCount(), 1); |
| assert_equals(getMissingFrameCount(), 2); |
| // Finished test. |
| resolve(); |
| }, 100); |
| } |
| |
| session.requestAnimationFrame(onSkipFrame); |
| }), fakeDevices["FakeGooglePixelPhone"], [{ exclusive: true }], |
| "A frame should be submitted if the base layer was written to during requestAnimationFrame"); |
| </script> |
