[Bug 89374] Firefox smooth scrolling isn't smooth

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https://bugs.freedesktop.org/show_bug.cgi?id=89374

Martin Peres  changed:

   What|Removed |Added

 Resolution|--- |MOVED
 Status|NEW |RESOLVED

--- Comment #12 from Martin Peres  ---
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[Bug 89374] Firefox smooth scrolling isn't smooth

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89374

--- Comment #11 from sunweb at hotmail.ru ---
(In reply to Michel Dänzer from comment #10)
> Not using Windows or smooth scrolling myself, I'm just not sure how smooth
> it's supposed to be. Don't worry, I'm not arguing there's no problem, just
> making suggestions that might improve your experience.

I've tried it in a notebook that has both intel and amd graphics. On intel
smooth scrolling even at heavy sites works really good.
A bit offtopic. How do i use amd gpu in such notebook and are you planing to
add some gui to switch between gpus and choose what programms to run with which
gpu?

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #10 from Michel Dänzer  ---
(In reply to sunweb from comment #9)
> About this non smooth scrolling issue. I feel like i am the only one here.
> If you do not have this problem than what card are you using and is it
> working as smooth as on Windows?

Not using Windows or smooth scrolling myself, I'm just not sure how smooth it's
supposed to be. Don't worry, I'm not arguing there's no problem, just making
suggestions that might improve your experience.

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #9 from sunweb at hotmail.ru ---
(In reply to Michel Dänzer from comment #8)
> With current xf86-video-ati Git master, you can enable DRI3 with Option
> "DRI3" in xorg.conf. Then "Re-use screen content" should work well. The
> breakage without that sounds like a kwin issue.
I always experience some troubles using the latest versions so i stay ou of it.
But i wouldn't want to use this option because on EXA i have no tearing even
with Vsync = none.

About this non smooth scrolling issue. I feel like i am the only one here. If
you do not have this problem than what card are you using and is it working as
smooth as on Windows?

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #8 from Michel Dänzer  ---
(In reply to sunweb from comment #7)
> On top of that, enabling glamor breaks my experiance with Gwenview, it
> simply hangs, shows first picture and hangs.

That would need to be tracked in a separate report, with detailed information
about the versions of gwenview/KDE/Qt and how to reproduce it.


> I also have to enable vsync in KDE settings to prevent tearing and set it to
> "full scene repaints" any other option give no result and "re-use screen
> content" simply kills any desktop experiance to that point you can't use
> menus, drag windows(that are already open) or open new ones, awful flickering
> etc.

With current xf86-video-ati Git master, you can enable DRI3 with Option "DRI3"
in xorg.conf. Then "Re-use screen content" should work well. The breakage
without that sounds like a kwin issue.

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #7 from sunweb at hotmail.ru ---
Ok, i just tried glamor on a bigger sites and i do see a difference, it is
smoother that the default option but it is nowhere as smooth as supposed to be.
On top of that, enabling glamor breaks my experiance with Gwenview, it simply
hangs, shows first picture and hangs. I also have to enable vsync in KDE
settings to prevent tearing and set it to "full scene repaints" any other
option give no result and "re-use screen content" simply kills any desktop
experiance to that point you can't use menus, drag windows(that are already
open) or open new ones, awful flickering etc.

Now that i think of it glamor is the only option for newer GPUs. Is it that bad
for them as well or is it just bad experience with the old ones?

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #6 from sunweb at hotmail.ru ---
(In reply to Michel Dänzer from comment #5)
> (In reply to sunweb from comment #4)
> > No difference.
> 
> Did you verify in /var/log/Xorg.0.log that glamor was enabled?

Yes, i've checked it.

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #5 from Michel Dänzer  ---
(In reply to sunweb from comment #4)
> No difference.

Did you verify in /var/log/Xorg.0.log that glamor was enabled?

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #4 from sunweb at hotmail.ru ---
No difference. Also i may took a wrong wording. Smooth scrolling can be enabled
but its not as smooth as it should be. Also i've recentley saw ff on windows
machine and it also has some animation when you press on Open Menu and far
better animation when you're going to/out Tab Groups. Those animations don't
exist on my machine. Maybe thats Firefox issue after all.

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #3 from Michel Dänzer  ---
No need to install any additional packages, just put something like this in
/etc/X11/xorg.conf:

Section "Device"
Identifier "Device0"
Driver  "radeon"
Option  "AccelMethod" "glamor"
EndSection

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #2 from sunweb at hotmail.ru ---
Hi, here're the files https://bugs.freedesktop.org/show_bug.cgi?id=89275

I don't have xorg.conf and installing glamor package didn't work out because of
Ubuntu bug.

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[Bug 89374] Firefox smooth scrolling isn't smooth

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--- Comment #1 from Michel Dänzer  ---
Please attach the /var/log/Xorg.0.log file and the output of dmesg.

Does Option "AccelMethod" "glamor" in xorg.conf help?

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[Bug 89374] Firefox smooth scrolling isn't smooth

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https://bugs.freedesktop.org/show_bug.cgi?id=89374

Bug ID: 89374
   Summary: Firefox smooth scrolling isn't smooth
   Product: DRI
   Version: XOrg git
  Hardware: Other
OS: Linux (All)
Status: NEW
  Severity: minor
  Priority: medium
 Component: DRM/Radeon
  Assignee: dri-devel at lists.freedesktop.org
  Reporter: sunweb at hotmail.ru

Kubuntu 14.04 x64, HD5770

glxinfo |grep Open
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD JUNIPER
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.3.2
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 10.3.2
OpenGL shading language version string: 1.30
OpenGL context flags: (none)

Firefox has an option of smooth scrolling(Preferences -> General -> Use smooth
scrolling). However it doesn't work on OSS drivers for my card. It does work on
Intel ones and closed source though.

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