Bug 122662 – WebGL context sometimes fails to be created, making many tests flaky

• Status: RESOLVED
• Resolution: CONFIGURATION CHANGED
• Component: WebGL

[Alexey Proskuryakov]

This happens on multiple tests and bots, WebGL context is just null. E.g.: <http://build.webkit.org/results/Apple%20MountainLion%20Release%20WK1%20(Tests)/r157307%20(13730)/compositing/webgl/webgl-background-color-diff.txt>.

Dean, what can be done to narrow this down?

[Dean Jackson]

(In reply to comment #0)

> Dean, what can be done to narrow this down?

I'm not sure. I think I'll have to add some logging to explain why context creation failed... is there a way to enable a logging channel in a test?

[Alexey Proskuryakov]

Regular console logs (stderr) will be preserved, and they can be limited to engineering builds with an ifdef I guess.

[Alexey Proskuryakov]

<rdar://problem/15673676
>

[Alexey Proskuryakov]

Created attachment 219371 [details]
Add logging

Looks like there is no way to silence the logging in production builds and have it in release ones, so we'll need to remember to remove this.

[Darin Adler]

Comment on attachment 219371 [details]
Add logging

Since this was described as temporary logging and this was 6 months ago, marking review-.

[Alexey Proskuryakov]

Not sure what our plan is for this. Dean?

The particular test mentioned in this bug is still flakily timing out, see <http://webkit-test-results.appspot.com/dashboards/flakiness_dashboard.html#tests=compositing%2Fwebgl%2Fwebgl-background-color>.