1568027 - WebRender performs worse on Binding of Isaac CodePen demo (svg filters/blob)

Status: NEW

(Core :: Graphics: WebRender, defect, P3)

Description

[Mike Conley (:mconley) (:⚙️)]

Original tweet: https://twitter.com/chriscoyier/status/1153400105711460352

I've forked the CodePen - here it is: https://codepen.io/anon/pen/RXWzbW

Let me capture some profiles real quick.

Comment 1

[Mike Conley (:mconley) (:⚙️)]

WebRender enabled: https://perfht.ml/2Y6kjxF

Comment 2

[Mike Conley (:mconley) (:⚙️)]

Actually, I was wrong - disabling WebRender on my Windows device improved the performance here considerably.

WebRender disabled: https://perfht.ml/2YcItqF

Comment 3

[Jeff Muizelaar [:jrmuizel]]

The WebRender profiles

Comment 4

[Barret Rennie [:barret] (they/them)]

:jrmuizel, your comment is a bit vague :)

Comment 5

[Jeff Muizelaar [:jrmuizel]]

Let me try again. The WebRender profiles don't show the WebRender threads. Adding "RenderBackend,Renderer,WebRender,Wr" to the thread list will give more useful results.

Comment 6

[Mike Conley (:mconley) (:⚙️)]

Sure thing:

https://perfht.ml/2YuRn2H

Comment 7

[Nicolas Silva [:nical]]

Super slow blob rasterization caused by a lot of filters. This should get better as we move more SVG filters to WebRender.

Comment 8

[Gregory Pappas [:gregp]]

I can still reproduce this slowness on v96. It becomes much more noticeable when the full view is chosen.
https://codepen.io/DavidJAldred/full/WqLxme