> 3140 WARNING: Mask layer with no compositable host: file gfx/layers/composite/LayerManagerComposite.cpp, line 1321 This warning  shows up in the following test suites: > 3088 - test-linux64/debug-mochitest-devtools-chrome-e10s-5 dt5 > 46 - test-linux64/debug-mochitest-devtools-chrome-e10s-10 dt10 > 6 - test-linux64/debug-mochitest-devtools-chrome-e10s-2 dt2 It shows up in 37 tests. A few of the most prevalent: > 153 - [e10s] devtools/client/animationinspector/test/browser_animation_target_highlighter_lock.js > 144 - [e10s] devtools/client/animationinspector/test/browser_animation_controller_exposes_document_currentTime.js > 126 - [e10s] devtools/client/animationinspector/test/browser_animation_timeline_shows_name_label.js > 126 - [e10s] devtools/client/animationinspector/test/browser_animation_refresh_on_added_animation.js > 117 - [e10s] devtools/client/animationinspector/test/browser_animation_timeline_shows_time_info.js > 108 - [e10s] devtools/client/animationinspector/test/browser_animation_refresh_when_active.js > 108 - [e10s] devtools/client/animationinspector/test/browser_animation_same_nb_of_playerWidgets_and_playerFronts.js > 108 - [e10s] devtools/client/animationinspector/test/browser_animation_shows_player_on_valid_node.js > 108 - [e10s] devtools/client/animationinspector/test/browser_animation_empty_on_invalid_nodes.js > 108 - [e10s] devtools/client/animationinspector/test/browser_animation_timeline_shows_delay.js  https://hg.mozilla.org/mozilla-central/annotate/2977ca122452/gfx/layers/composite/LayerManagerComposite.cpp#l1321
Bisection points to https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=6bd789dee7a6fc7bc86934148b44421cbaf6ef48&tochange=d768c92253e97fafa7cee440573ac60f49a8c659 which is bug 1242986. Unfortunately that's just enabling e10s devtools tests, but at least we can tell this is e10s only.
Component: Developer Tools → Developer Tools: Animation Inspector
Inspector bug triage (filter on CLIMBING SHOES).
Priority: -- → P2
Assignee: nobody → jdescottes
Status: NEW → ASSIGNED
This has become more verbose and is currently the 2nd largest warning during testing.
Summary: 3,100 instances of "Mask layer with no compositable host" emitted from gfx/layers/composite/LayerManagerComposite.cpp during linux64 debug testing → 3,600 instances of "Mask layer with no compositable host" emitted from gfx/layers/composite/LayerManagerComposite.cpp during linux64 debug testing
Zero warnings in a try run , so looks good from that angle.  https://treeherder.mozilla.org/#/jobs?repo=try&revision=6b38788c5b1fec5c67f1f061c0ddab6bedf2410e
(Thanks for the try run erahm, I uploaded the patch in a hurry and forgot to add the investigation/explanation below) I could reproduce the issue on a debug build on Ubuntu. The warnings occur even without opening the devtools during the test. Fiddling with the test page (), the warnings go away when removing the `border-radius` or the `background` property from the .ball class at: http://searchfox.org/mozilla-central/rev/02a56df6474a97cf84d94bbcfaa126979970905d/devtools/client/animationinspector/test/doc_simple_animation.html#10 If we add an actual border to the element (such as 1px solid white), the warnings also disappear. pbro: I propose we land this as a workaround and leave-open while we investigate for the real root cause of the issue.
Comment on attachment 8829981 [details] Bug 1329784 - avoid layout warnings in animation inspector debug tests; https://reviewboard.mozilla.org/r/106934/#review108164 Sure. That works for me as a workaround. We could also remove the border-radius altogether, these tests don't care about the shape of the elements. But, yeah, sounds like we should investigate the root cause causing the warning on Linux debug.
Attachment #8829981 - Flags: review?(pbrosset) → review+
Pushed by firstname.lastname@example.org: https://hg.mozilla.org/integration/autoland/rev/e00ee63857b5 avoid layout warnings in animation inspector debug tests;r=pbro
Created attachment 8830216 [details] [diff] [review] bug1329784.bustage.patch Tomcat: here's the follow up for the test failure. Sorry about that!
Pushed by email@example.com: https://hg.mozilla.org/integration/autoland/rev/23fce11bd83b fix bustage in browser_animation_animated_properties_displayed.js;r=me a=tomcat
(In reply to Julian Descottes [:jdescottes] from comment #9) > Created attachment 8830216 [details] [diff] [review] > bug1329784.bustage.patch > > Tomcat: here's the follow up for the test failure. Sorry about that! landed :) and np :)
No action left on DevTools side.
Status: ASSIGNED → RESOLVED
Last Resolved: a year ago
Resolution: --- → FIXED
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