1864830 - The fishbowl animation is considerably slower than on older versions on Linux

Status: NEW

(Core :: Graphics: Canvas2D, defect)

Description

[Daniel Bodea [:danibodea]]

Found in

• ESR v115.5.0

Affected versions

• Nightly v121.0a1
• Beta 120.0b9, v120.0 (RC)
• ESR v115.5.0

Tested platforms

• Affected platforms: Ubuntu 22
• Unaffected platforms: Windows 10

Steps to reproduce

1. Load https://testdrive-archive.azurewebsites.net/Performance/FishBowl/
2. Watch animation and FPS counter

Expected result

• The animation is about 30 fps

Actual result

• The animation is 2-10 fps

Regression range

• First bad: f3d632ec453b7f9a80f47dc1edb53e4b7b97f10a (2022-05-21)
• Last good: 3b0030f76f1ee69138d29f114d5221f21c55e7e5 (2022-05-20)
• Pushlog: https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=3b0030f76f1ee69138d29f114d5221f21c55e7e5&tochange=f3d632ec453b7f9a80f47dc1edb53e4b7b97f10a
• Potentially regressed by: ?

Additional notes

• additional_note1

Comment 1

[Mayank Bansal]

Possible regressor from the range in coment 0: bug 1770088

Daniel is this fixed for you if : you set gfx.canvas.accelerated= False, restart Nightly and try again ?

Comment 2

[Daniel Bodea [:danibodea]]

Flipping gfx.canvas.accelerated to false will improve the fps on the animation as such:

• In Beta 120.0 (RC) from about 6-7 fps to about 17-18 fps
• In Nightly v121.0a1 from 9-14 fps to 31-33 fps

As it appears there must be more to it than just this pref flip, on the Beta channel.