Closed Bug 1701977 Opened 3 years ago Closed 3 years ago

[wayland] Enable Webrender on all compositors on Mesa Intel/AMD

Categories

(Core :: Graphics, enhancement)

enhancement

Tracking

()

RESOLVED FIXED
89 Branch
Tracking Status
firefox89 --- fixed

People

(Reporter: rmader, Assigned: rmader)

References

(Blocks 1 open bug)

Details

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(1 file)

Following up on bug 1640115 comment 10

We do not yet enable Wayland by default anywhere and we only need to care for four major compositors: Weston, Mutter, KWin and Sway/wlroots.

Weston is only for testing purposes, Mutter has been well tested on Fedora for a while now, Sway appears to be fine (bug 1640115 comment 10) and KWin only enters a wider audience right now.

Lets enable Webrender on all of them and not invest more into the basic backend.

Open question: should we fall back to SW-WR instead of basic already if HW-WR fails?

Martin, Vlad, Andrew - any resistance again this?

Flags: needinfo?(vlad.zahorodnii)
Flags: needinfo?(stransky)
Flags: needinfo?(aosmond)

Open question: should we fall back to SW-WR instead of basic already if HW-WR fails?

In an impromptu test, the total CPU usage for playing a YouTube video seems to increase from ~100% combined (gfx.webrender.force-disabled) to ~160% combined (gfx.webrender.software) here.

PS: I wonder if this is due to duplication of work in both Renderer and SWCompositor.

Fedora uses WebRender with KWin/Wayland already so no objections here. IMHO wayland compositor type is not as important as driver/mesa versions.

Flags: needinfo?(stransky)

(In reply to Jan Alexander Steffens [:heftig] from comment #3)

Open question: should we fall back to SW-WR instead of basic already if HW-WR fails?

In an impromptu test, the total CPU usage for playing a YouTube video seems to increase from ~100% combined (gfx.webrender.force-disabled) to ~160% combined (gfx.webrender.software) here.

PS: I wonder if this is due to duplication of work in both Renderer and SWCompositor.

Getting SW-WR to perform as good as basic is AFAIK not a design goal per-se. IIUC one major motivation is that having only WR unlocks a bunch of possible optimizations (e.g. dropping display lists and much of the associated costs) - see for example bug 1701437 comment 2.

So slightly less performance in SW-WR should probably not be a blocker, as long as it's not too bad and the stability doesn't suffer.

This effectively enables WR on Weston, Sway and KWin-Wayland -
unlike on X11, few issues appear to be related to WR.

Assignee: nobody → robert.mader
Status: NEW → ASSIGNED

+1. For what it's worth, in Plasma/Wayland, Firefox works better with WR than with BR.

Flags: needinfo?(vlad.zahorodnii)

This was tracked in bug 1587060 already

Alias: wr-wayland
Blocks: wr-linux-wayland
No longer blocks: wayland
Summary: [wayland] Enable Webrender on all compositors → [wayland] Enable Webrender on all compositors on Mesa Intel/AMD
Pushed by archaeopteryx@coole-files.de:
https://hg.mozilla.org/integration/autoland/rev/1f7d7c5d90ef
Enable WR on Intel/AMD on Wayland, r=aosmond
Status: ASSIGNED → RESOLVED
Closed: 3 years ago
Resolution: --- → FIXED
Target Milestone: --- → 89 Branch
Flags: needinfo?(aosmond)
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