1414691 - qmusic.nl extremely slow with webrender

Status: RESOLVED FIXED

(Core :: Graphics: WebRender, defect, P1)

Description

[Jan de Mooij [:jandem]]

On OS X, http://qmusic.nl/ is extremely slow for me when I enable webrender. It's especially noticeable when you (try to) scroll, but also just having it open seems to slow things down.

Comment 1

[Jan de Mooij [:jandem]]

I hope people will be able to repro this. If not, I would be happy to provide more info.

Comment 2

[Jeff Muizelaar [:jrmuizel]]

I can reproduce. I suspect this blur related. I'll make a recording.

Comment 3

[Darkspirit]

Attachment: 2017-11-06_01-56-10.mp4

Nightly 58 x64 20171105220721 de_DE e64846245b002c204144ac412fbd874e32e47edf @ Debian Testing (KDE, Radeon RX480)
main profile: gpu process, layers force accel, webrender, blob-images, stylo-chrome

Problem A) When I scrolled down, sometimes one of these tiles/images showed up (and flickered) on the top-left corner for a moment. It had red dots and looked a bit like gfx.webrender.debug.texture-cache.

Problem B) When I scroll down and up often enough, I see something even more strange. It was also on a subpage: http://qmusic.nl/nieuws/behind-the-scenes-bij-niall-horans-nieuwste-clip (The attached video is about it.) It went away by restarting Nightly. I can't really reproduce this and haven't seen such stuff for a long time.

Problem C) When I pressed Pos1/Ende (Home/End), most of the images were only shown in half: The lower half was red. This is only with blob-images.

Comment 4

[Jeff Muizelaar [:jrmuizel]]

Yaml at: https://jrmuizel.github.io/webrender/qmusic.zip there's a blur(100) so this will very likely be fixed or at least significantly improved by https://github.com/servo/webrender/pull/1961

Comment 5

[Jeff Muizelaar [:jrmuizel]]

This is basically fixed now. darkspirit do you mind filing separate bugs for the other issues you can still reproduce.