Closed Bug 1692589 Opened 3 years ago Closed 3 years ago

YouTube scroll is jerky with Software WebRender

Categories

(Core :: Graphics: WebRender, defect)

Product:
Core
Component:
Graphics: WebRender
Version:
Firefox 87
Type:
defect

Tracking

()

Status:
RESOLVED FIXED

People

(Reporter: andro.marian.v94, Unassigned)

References

(Blocks 1 open bug)

Details

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36

Steps to reproduce:

I go to https://www.youtube.com/ and press the Mouse3 to scroll down.

Actual results:

The scroll become jerky when loading the extra content.
After scrolling up feels smooth when the Profiling is on but when is off is worse.

https://share.firefox.dev/3qfmY7a

Summary: YouTube scroll is jerky with WebRender → YouTube scroll is jerky with Software WebRender

The profile is with gfx.webrender.software = true

The Bugbug bot thinks this bug should belong to the 'Core::Graphics: WebRender' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Component: Untriaged → Graphics: WebRender
Product: Firefox → Core

This is with webrender.software = false: https://share.firefox.dev/3acQOUn

Matt, looking at the SW-WR profile in the OP, it looks like we have little spikes in the renderer thread where UnmapTile is taking a lot of time in D3D. This is probably related to the work you're already doing there...

Severity: -- → S3
Depends on: 1694840

Closing this out since bug 1694840 landed.

Status: UNCONFIRMED → RESOLVED
Closed: 3 years ago
Resolution: --- → FIXED
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