1484027 - Web renderer clipping performance problems

Status: RESOLVED INVALID

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

Description

[rugk]

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0
Build ID: 20180816100035

Steps to reproduce:

1. Enable web renderer.
2. Go to https://nodividestudio.com/
3. Scroll around.


Actual results:

It's kinda slow and "lags" a bit. (maybe related to clipping)


Expected results:

Good performance.

Comment 1

[Darkspirit]

https://twitter.com/pcwalton/status/1030184262299865088

Comment 2

[Sotaro Ikeda [:sotaro]]

It seems similar to Bug 1483610 from Bug 1483610 Comment 5 and Bug 1483610 Comment 9.

Comment 3

[Jeff Muizelaar [:jrmuizel]]

Does this still happen?

Comment 4

[rugk]

Especially around the dark star background at https://nodividestudio.com/, yes.

Comment 5

[Sotaro Ikeda [:sotaro]]

clip handling seemed be improved by

https://github.com/servo/webrender/pull/2980
https://github.com/servo/webrender/pull/2986 (not yet merged to m-c)

Comment 6

[rugk]

BTW sites listed in https://dev.to/abdelrahman3d/css-abuse-31gp are really great sites to test performance of the web renderer, which is still quite poor in Firefox Nightly.

Comment 7

[Nicolas Silva [:nical]]

The website is gone and there is nothing actionable in the comments bug (no profiles, etc.). Let's close this and open new bug when we find pages with similar performance issues we can investigate.