1435045 - Huge blob image jank on https://blog.openai.com/requests-for-research-2/

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, enhancement, P2)

Description

[Jeff Muizelaar [:jrmuizel]]

https://perfht.ml/2ntifR9

We're doing a bunch of blur. I'm not sure why it's so slow.

Things that can be done to fix it:
- Figure out why it's so slow (it shouldn't be as bad as it is)
- The blur should be handled by WebRender because it's outside of the svg
- Reduce the tile size of blob image so that we parallel paint it.

Comment 1

[Markus Stange [:mstange]]

Attachment: Bug 1435045 - Don't make CSS filters on the <svg> element use fallback. r=jrmuizel

Comment 2

[Markus Stange [:mstange]]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #0)
> https://perfht.ml/2ntifR9
> 
> We're doing a bunch of blur. I'm not sure why it's so slow.
> 
> Things that can be done to fix it:
> - Figure out why it's so slow (it shouldn't be as bad as it is)

I think it's just a gigantic blur radius and we don't do anything smart (like downscale-before-blur) to address that.

> - The blur should be handled by WebRender because it's outside of the svg

I've attached a patch that fixes this part.

> - Reduce the tile size of blob image so that we parallel paint it.

We're still not using tiles for blob images effectively, so this still needs to be fixed.

Comment 3

[Jeff Muizelaar [:jrmuizel]]

Comment on attachment 9003292 [details]
Bug 1435045 - Don't make CSS filters on the <svg> element use fallback. r=jrmuizel

Jeff Muizelaar [:jrmuizel] has approved the revision.

Comment 4

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/d77ca862636d
Don't make CSS filters on the <svg> element use fallback. r=jrmuizel

Comment 5

[Cristian Brindusan [:cbrindusan]]

https://hg.mozilla.org/mozilla-central/rev/d77ca862636d