WebGL Content Flickering

[Kirill Dmitrenko]

Hi guys!

My app suddenly've started to flicker in Chrome Canary (53.0.2760.0 canary (64-bit), OS X 10.11): http://jsfiddle.net/nkfn0jq3/. The problem doesn't reproduce in stable Chrome.

Is it a bug in Canary? Can it be connected to the fact that I'm using for scheduling exclusively rAF and sometimes no actual re-rendering of canvas is done in a rAF callback?

[Kenneth Russell]

Hi Kirill,

Thanks for pointing this out. I can see the regression and think it's an accidental side-effect of the fix for http://crbug.com/581777 , which was just reverted. Please let us know if you see it in the Canary from tomorrow or the day after. We will work on adding a regression test for this.

-Ken

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[Kirill Dmitrenko]

Thanks!

вторник, 7 июня 2016 г., 2:30:16 UTC+3 пользователь Kenneth Russell написал:

[Kenneth Russell]

It looks like the abovementioned revert fixed the flickering. I'm sure we'll add a good regression test for this to avoid breaking it in the future. Thanks again for the heads up and please keep them coming.

-Ken

[Kirill Dmitrenko]

Did the revert make it to Canary 53.0.2762.0? How can I check it? I've found this: https://chromium.googlesource.com/chromium/src/+log/53.0.2760.0..53.0.2762.0. And there is 6a90cbb, which is also the last one referenced in http://crbug.com/581777.

The thing is in 53.0.2762.0 the app still flickers.

среда, 8 июня 2016 г., 3:46:30 UTC+3 пользователь Kenneth Russell написал:

[Kenneth Russell]

It doesn't flicker for me in 53.0.2762.0 (Official Build) canary (64-bit) on Mac OS X. Please copy/paste the ASCII plaintext from about:gpu to pastebin and post the link here.

[Kirill Dmitrenko]

https://gist.github.com/dmikis/e2a5e04ef2b825ad26e262e05f9ba959

четверг, 9 июня 2016 г., 3:03:55 UTC+3 пользователь Kenneth Russell написал:

[Kenneth Russell]

Can't reproduce this on 53.0.2764.0 (Official Build) canary (64-bit). I'm on a MacBook Pro with a discrete (NVIDIA) GPU though, and haven't had a chance to test on just an Intel GPU.

A colleague points out the flickering should have been fixed by one of these two changes:

https://codereview.chromium.org/2041043002/

https://codereview.chromium.org/2053983002/

-Ken

[Kirill Dmitrenko]

On 53.0.2765.0 all seems to be OK. Thank you guys!

суббота, 11 июня 2016 г., 2:10:44 UTC+3 пользователь Kenneth Russell написал:

[Eric Lugtigheid]

I just installed Canary...

All webgl sites I have seen gives flikkering is this latest version, in Chrome there is no flikkering.

Has the problem been taking care off or can't we use Canary for 3D?

Op maandag 6 juni 2016 14:58:42 UTC+2 schreef Kirill Dmitrenko:

[Zhenyao Mo]

Please file a bug at crbug.com, and include your about:gpu content in
the bug report.

[Ken Russell]

Also, please post the bug ID here once you've filed it.

> email to webgl-dev-list+unsubscribe@googlegroups.com.

> For more options, visit https://groups.google.com/d/optout.

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