930079 - Spin animation is jerky/jumpy/wobbly

Status: RESOLVED WORKSFORME

(Core :: Layout, defect)

Description

[Robert Buchholz]

Attachment: Screen recording of Firefox 24 -- Linux left, Windows right

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/27.0.1453.93 Safari/537.36

Steps to reproduce:

Opened http://fortawesome.github.io/Font-Awesome/examples/#spinning



Actual results:

The spinner icons spin, but they jump/wobble around. This is really bad in a Windows environment, but happens on Linux as well. See attached video.


Expected results:

The spinning should be smooth, as it is in IE10/11 and Chrome.

This happens with 3d spinning as well:
http://jsfiddle.net/tagliala/EwXps/

Comment 1

[Robert Buchholz]

description of attachment is wrong, this is FF24.

Comment 2

[[:Aleksej]]

Mostly OK here with 2013-10-28-03-02-05-mozilla-central-firefox-27.0a1.en-US.linux-x86_64, though Inspector's "tooltip" is jumping.

Comment 3

[Robert Buchholz]

Still looks the same for me on Win8.1 / Nightly 28.0a1 (2013-11-06) and Linux / 25.0

Comment 4

[Robert Buchholz]

I also noticed it looks a lot worse when you scroll into an animated area, e.g. when loading the http://fontawesome.io/examples/ page and then scroll down. When reloading at the same scroll position, it looks smewhat better.

Comment 5

[Timothy Nikkel (:tnikkel)]

The testcases look smooth to me on mac with Firefox 27 and with nightly (30).

Comment 6

[Robert Buchholz]

Attachment: firefox27+30.ogv

Left top: Firefox 27 on Linux that scrolled into animated area after page load.
Left bottom: same, but reloaded page at animated area (is smoother)
Right: Firefox 30a nightly on Windows 8.1

Comment 7

[Timothy Nikkel (:tnikkel)]

I tried on Windows 8.1 and it looked smooth to me there as well.

Can you paste the graphics section of about:support? Also did this used to look smooth for you at some point? Or has it always been like that?

Comment 8

[Timothy Nikkel (:tnikkel)]

Ah, I can reproduce if I force disable hardware acceleration. Must be a basic layers only bug.

Comment 9

[Robert Buchholz]

Maybe it's an issue there due to missing GPU acceleration? I don't have Win81 running natively on the hardware (as opposed to FF27 on Linux). Do you offload 2d animations to the hardware already?

I think it has always been like that, but I do not regularly use Firefox on Windows. We got a user report of the jerky animation (this was on Firefox 24 running on a regular Windows XP install, if I recall correctly), and then reproduced it on native Linux Firefoxes as well as virtualized Windows FF versions (as demonstrated by my screen recording in attachment 821103 [details]). I can see in attachment 8378153 [details] that it hasn't improved from FF24 to FF27 on Linux, though.

Windows / FF 30a:

Adapter Description	VirtualBox Graphics Adapter for Windows 8
Adapter Drivers	VBoxDispD3D
Adapter RAM	Unknown
Device ID	0xbeef
Direct2D Enabled	Blocked for your graphics card because of unresolved driver issues.
DirectWrite Enabled	false (6.3.9600.16384)
Driver Date	12-18-2013
Driver Version	4.3.6.0
GPU #2 Active	false
GPU Accelerated Windows	0/1 Basic Blocked for your graphics card because of unresolved driver issues.
Vendor ID	0x80ee
WebGL Renderer	Blocked for your graphics card because of unresolved driver issues.
windowLayerManagerRemote	false
AzureCanvasBackend	skia
AzureContentBackend	cairo
AzureFallbackCanvasBackend	cairo
AzureSkiaAccelerated	0


Linux // FF27

Adapter Description	Intel Open Source Technology Center -- Mesa DRI Intel(R) Ivybridge Mobile
Device ID	Mesa DRI Intel(R) Ivybridge Mobile
Driver Version	3.0 Mesa 9.2.4
GPU Accelerated Windows	0/1 Basic
Vendor ID	Intel Open Source Technology Center
WebGL Renderer	Intel Open Source Technology Center -- Mesa DRI Intel(R) Ivybridge Mobile
windowLayerManagerRemote	false
AzureCanvasBackend	cairo
AzureContentBackend	cairo
AzureFallbackCanvasBackend	none
AzureSkiaAccelerated	0

Comment 10

[Nazar Mokrynskyi]

The same bug on Ubuntu with Firefox 31 (and previous versions as well)

Comment 11

[gadelat]

I confirm that this bug is present for installations with disabled hw acceleration. Tested on Win 8.1: Enabled hw accel: OK. Disabled hw accel: jerky animation