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Test Info: Errors
- This test gets skipped with pattern: os == 'linux' && tsan && verify OR os == 'mac' && os_version == '14.70' && processor == 'x86_64' && debug && xorigin
- This test failed 107 times in the preceding 30 days. quicksearch this test
- Manifest: layout/style/test/mochitest.toml
<!doctype html>
<html>
<!--
-->
<head>
<meta charset=utf-8>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<script src="animation_utils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
<style>
#target {
height: 100px;
width: 100px;
background: green;
transition: translate 2s steps(2, start);
}
</style>
</head>
<body>
<div id="target"></div>
<script>
'use strict';
SimpleTest.waitForExplicitFinish();
const OMTAPrefKey = 'layers.offmainthreadcomposition.async-animations';
const omtaEnabled =
SpecialPowers.DOMWindowUtils.layerManagerRemote &&
SpecialPowers.getBoolPref(OMTAPrefKey);
function waitForAnimationFrames(aFrameCount) {
const timeAtStart = window.document.timeline.currentTime;
return new Promise(function (resolve, reject) {
function handleFrame() {
if (
timeAtStart != window.document.timeline.currentTime &&
--aFrameCount <= 0
) {
resolve();
} else {
window.requestAnimationFrame(handleFrame); // wait another frame
}
}
window.requestAnimationFrame(handleFrame);
});
}
window.addEventListener('load', async function() {
if (!omtaEnabled) {
ok(true, 'Skipping the test since OMTA is disabled');
SimpleTest.finish();
return;
}
try {
await isOMTAWorking();
} catch (error) {
ok(true, 'Skipping the test since OMTA may have issues');
SimpleTest.finish();
return;
}
const div = document.getElementById('target');
// Start first transition
div.style.translate = '400px';
const firstTransition = div.getAnimations()[0];
// Wait for first transition to start running on the main thread and
// compositor.
await firstTransition.ready;
await waitForPaintsFlushed();
// Wait for some frames to make sure we have OMTA style there, to avoid the
// possible intermittent (on Android especially).
await waitForAnimationFrames(10);
// We create a transition from 0px to 400px, so the current value is 200px
// (i.e. 50%).
let matrix = SpecialPowers.DOMWindowUtils.getOMTAStyle(div, "translate");
ok(matricesRoughlyEqual(convertTo3dMatrix(matrix),
convertTo3dMatrix("matrix(1, 0, 0, 1, 200, 0)")),
"The current value of the 1st transition after ready");
// Start second transition
div.style.translate = '600px';
const secondTransition = div.getAnimations()[0];
// Tie up main thread for 1200ms. In the meantime, the first transition
// will continue running on the compositor. If we don't update the start
// point of the second transition, it will appear to jump when it starts.
const startTime = performance.now();
while (performance.now() - startTime < 1200);
await waitForPaintsFlushed();
// We should create a transition from 400px to 600px, so the final current
// value is 500px (i.e. 50%).
matrix = SpecialPowers.DOMWindowUtils.getOMTAStyle(div, "translate");
ok(matricesRoughlyEqual(convertTo3dMatrix(matrix),
convertTo3dMatrix("matrix(1, 0, 0, 1, 500, 0)")),
"The current value of the 2nd transition after replacing the start value");
SimpleTest.finish();
});
</script>
</body>
</html>