1475826 - WebGL game laggy on latest Firefox (was fine before) while works perfectly on Chrome

Status: RESOLVED FIXED

(Core :: Graphics: CanvasWebGL, defect)

Description

[Shahin Dohan]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0
Build ID: 20180704003137

Steps to reproduce:

Started playing a WebGL game called "Rush Team", accessible from the following URL: https://www.asr-games.net/index.php?page=gameWebGL


Actual results:

The game in general seems to be very choppy and laggy. When I move the mouse, it takes a while for the move to happen in-game and in general all the movements are choppy as if I'm running the game on a very weak GPU even though I have a GTX 1080.




Expected results:

It should work as it did in earlier versions of Firefox, I last tried atleast maybe 3 months ago and none of these issues were present. I thought it was the game developers fault, but when I played the game on Chrome, everything was silky smooth.

Comment 1

[Gingerbread Man]

(In reply to Shahin Dohan from comment #0)
> It should work as it did in earlier versions of Firefox, I last tried
> atleast maybe 3 months ago and none of these issues were present.

It would be helpful if you could find the exact regression range.
https://mozilla.github.io/mozregression/quickstart.html

Comment 2

[Peter Magyari (Desktop QA)]

This issue does not occur in Firefox 60.1.0 Esr(2018-06-21)(64-bit)
Firefox Beta 62.0b(2018-07-13)(64-bit) or Firefox Nighty 63.0a1 (2018-07-16)(64-bit) on Windows 10 Pro or Ubuntu 16.04 but it does occur in Firefox 61...
Taken the above in consideration, we've run mozregression with --find-fix in order to find the fix that fixed this behavior.
Unfortunately, the results are inconsistent, 4 mozregression runs, 4 different results, which do not seem to have anything in common with the nature of the bug. 
Maybe it would be interesting to find the bug-fix that resolved this issue, but given that the bug doesn't reproduce in Beta & Nightly, I'm updating the status flags and removing the regression-range request.

Comment 3

[Gingerbread Man]

(In reply to Peter from comment #2)
> Maybe it would be interesting to find the bug-fix that resolved this issue,
> but given that the bug doesn't reproduce in Beta & Nightly, I'm updating the
> status flags and removing the regression-range request.

Thank you. You actually only set status-firefox61: affected. Considering the release version only receives security and stability patches, that should be wontfix. Since ESR, beta and nightly aren't affected, there's nothing left to do here.

Comment 4

[Shahin Dohan]

Thank you guys! Sorry for not being active in my own thread, I was on vacation abroad.

I'll wait for the fix in the next version of Firefox :)