Attaching patch includes an mochitest. If you run the test once, the test will succeed. But if you run the test repeatedly, say with --run-until-failure option, it will fail. The test just does: // create animation var anim = div.animate({ opacity: [0, 1], transform: ['translate(0px)', 'translate(100px)'] }, 100000); // wait a frame // check that the animation is running on compositor assert_true(isRunningOnCompositor); // add the obstacle style div.style = 'transform-style: preserve-3d'; // wait a frame // check that the animation is not running on compositor assert_false(isRunningOnCompositor); // remove the obstacle style div.style = ''; // wait a frame // check that the animation is running on compositor assert_true(isRunningOnCompositor); The first run of this test surely succeeds, but the third assertion on the second run certainly fails on my local linux box.

(In reply to Hiroyuki Ikezoe (:hiro) from comment #0) > // remove the obstacle style > div.style = ''; > // wait a frame > // check that the animation is running on compositor > assert_true(isRunningOnCompositor); > > > The first run of this test surely succeeds, but the third assertion on the > second run certainly fails on my local linux box. The warning message at the failure point is: Async animation of 'transform-style: preserve-3d' transforms is not supported

I did misunderstand --run-until-failure. (In reply to Hiroyuki Ikezoe (:hiro) from comment #0) > The first run of this test surely succeeds, but the third assertion on the > second run certainly fails on my local linux box. Actually this is not the second run. The failure case is that the test run in iframe.

This issue is highly related to other preserve-3d issues.

Just confirmed that the patches in bug 1250718 solves this bug.

Bug 12507180 has been fixed, now it's the time to enable those tests in test_animation_property_state.html.

Review commit: https://reviewboard.mozilla.org/r/42711/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/42711/

Review commit: https://reviewboard.mozilla.org/r/42713/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/42713/

Review commit: https://reviewboard.mozilla.org/r/42715/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/42715/

Oh my gosh! The account is a dummy account which I created for that event!

Review commit: https://reviewboard.mozilla.org/r/42733/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/42733/

Review commit: https://reviewboard.mozilla.org/r/42735/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/42735/

Review commit: https://reviewboard.mozilla.org/r/42737/diff/#index_header See other reviews: https://reviewboard.mozilla.org/r/42737/

Comment on attachment 8735332 [details] MozReview Request: Bug 1255710 - Part 0: Rename test_animation_property_state.html to test_animation_performance_warning.html. r?birtles https://reviewboard.mozilla.org/r/42733/#review39407 The commit message here needs to be updated from "est_animation_property_state.html" to "test_animation_property_state.html"

Comment on attachment 8735333 [details] MozReview Request: Bug 1255710 - Part 1: Remove all unnecessary t.step_func. r?birtles https://reviewboard.mozilla.org/r/42735/#review39409

Comment on attachment 8735334 [details] MozReview Request: Bug 1255710 - Part 2: Enable tests for 'transform-style: preserve-3d'. r?birtles https://reviewboard.mozilla.org/r/42737/#review39411 Before landing this, we should make sure we have a try run with a lot of retriggers to be sure this doesn't fail intermittently.

Comment on attachment 8735332 [details] MozReview Request: Bug 1255710 - Part 0: Rename test_animation_property_state.html to test_animation_performance_warning.html. r?birtles Review request updated; see interdiff: https://reviewboard.mozilla.org/r/42733/diff/1-2/

Comment on attachment 8735333 [details] MozReview Request: Bug 1255710 - Part 1: Remove all unnecessary t.step_func. r?birtles Review request updated; see interdiff: https://reviewboard.mozilla.org/r/42735/diff/1-2/

Comment on attachment 8735334 [details] MozReview Request: Bug 1255710 - Part 2: Enable tests for 'transform-style: preserve-3d'. r?birtles Review request updated; see interdiff: https://reviewboard.mozilla.org/r/42737/diff/1-2/

https://hg.mozilla.org/integration/mozilla-inbound/rev/3d848bfe065d https://hg.mozilla.org/integration/mozilla-inbound/rev/98655db9da52 https://hg.mozilla.org/integration/mozilla-inbound/rev/80660b035524

https://hg.mozilla.org/mozilla-central/rev/3d848bfe065d https://hg.mozilla.org/mozilla-central/rev/98655db9da52 https://hg.mozilla.org/mozilla-central/rev/80660b035524