1403179 - Large amount of jank on gmail when blob images end up using text

Status: RESOLVED FIXED

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

Description

[Jeff Muizelaar [:jrmuizel]]

This could because we still do bad things with fonts.

Comment 1

[Peter Chang[:pchang]]

Jeff, I also saw jank while browsing the Reddit website which contained lots of text and could be the same problem with this bug.

[STR] - tested on windows 10
1. Use the scroll test tool from https://bug894128.bmoattachments.org/attachment.cgi?id=776049
2. Open https://www.reddit.com/r/NintendoSwitch/
3. Use scroll test with 50000, 10, 120 setting

From the following profile or 'webrender debug profiler', I saw the average time of compositor CPU time was around 100ms.
http://perfht.ml/2iCodPX

It looks like we spent lots of time drawing and uploading texture.

55% -> cpu webrender::renderer::Renderer::draw_instanced_batch<webrender::gpu_types::PrimitiveInstance>
21% -> cpu webrender::device::Device::update_texture_from_pbo

Comment 2

[Peter Chang[:pchang]]

I still saw jank no matter I enabled blob image or not.

Comment 3

[Jeff Muizelaar [:jrmuizel]]

Peter, your issue seems like a different one. Can you file a separate bug. I believe this bug will be fixed by bug 1380014.

Comment 4

[Peter Chang[:pchang]]

(In reply to Jeff Muizelaar [:jrmuizel] from comment #3)
> Peter, your issue seems like a different one. Can you file a separate bug. I
> believe this bug will be fixed by bug 1380014.

Filed bug 1412731.

Comment 5

[Jeff Muizelaar [:jrmuizel]]

We font share now so this should be good enough.