From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 99418] DRI3 Stuttering while scrolling in Chromium/Chrome with VBLANK off Date: Thu, 02 Feb 2017 03:43:02 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1420789307==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 50E4D6E023 for ; Thu, 2 Feb 2017 03:43:02 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============1420789307== Content-Type: multipart/alternative; boundary="14860069820.9859.23260"; charset="UTF-8" --14860069820.9859.23260 Date: Thu, 2 Feb 2017 03:43:02 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated https://bugs.freedesktop.org/show_bug.cgi?id=3D99418 --- Comment #31 from lei.pero@gmail.com --- (In reply to Michel D=C3=A4nzer from comment #30) > (In reply to lei.pero from comment #29) > > Just want to add few things, did reported bug to gnome project, but, pr= oblem > > does not happen when "vblank_mode" value in .drirc configuration file i= s set > > to 1 (instead of 0 I've used before). >=20 > 1 means sync-to-vblank is disabled by default, but the application can > enable it explicitly. 0 means sync-to-vblank is disabled regardless of wh= at > the application wants. So this could actually be considered a configurati= on > issue instead of a bug anywhere. Yeah, I realized that, It's still odd behaviour, in both cases Chrome caps = FPS to refresh rate (this case 85FPS), but using DRI3 using mutter/clutter, for some reason it creates continuous stutters, even tho FPS is the same and all other parameters are equal. It really looks (when viewed live) as if FPS is= not equal to refresh rate. Just wanted to inform you guys on this, it is still probably mutter/clutter configuration problem in the code (since it happens only there), it doesn't follow configuration in .drirc as other WM's. --=20 You are receiving this mail because: You are the assignee for the bug.= --14860069820.9859.23260 Date: Thu, 2 Feb 2017 03:43:02 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://bugs.freedesktop.org/ Auto-Submitted: auto-generated

Commen= t # 31 on bug 99418<= /a> from lei.pero@gmail= .com
(In reply to Michel D=C3=A4nzer from comment #30)
> (In reply to lei.pero from comment #29)
> > Just want to add few things, did reported bug to gnome project, b=
ut, problem
> > does not happen when "vblank_mode" value in .drirc conf=
iguration file is set
> > to 1 (instead of 0 I've used before).
>=20
> 1 means sync-to-vblank is disabled by default, but the application can
> enable it explicitly. 0 means sync-to-vblank is disabled regardless of=
 what
> the application wants. So this could actually be considered a configur=
ation
> issue instead of a bug anywhere.

Yeah, I realized that, It's still odd behaviour, in both cases Chrome caps =
FPS
to refresh rate (this case 85FPS), but using DRI3 using mutter/clutter, for
some reason it creates continuous stutters, even tho FPS is the same and all
other parameters are equal. It really looks (when viewed live) as if FPS is=
 not
equal to refresh rate.

Just wanted to inform you guys on this, it is still probably mutter/clutter
configuration problem in the code (since it happens only there), it doesn't
follow configuration in .drirc as other WM's.


You are receiving this mail because:
  • You are the assignee for the bug.
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