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: Mon, 23 Jan 2017 14:35:27 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1683358862==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [IPv6:2610:10:20:722:a800:ff:fe98:4b55]) by gabe.freedesktop.org (Postfix) with ESMTP id 700DB6E575 for ; Mon, 23 Jan 2017 14:35:27 +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 --===============1683358862== Content-Type: multipart/alternative; boundary="14851821270.7dcDDbE3D.1465"; charset="UTF-8" --14851821270.7dcDDbE3D.1465 Date: Mon, 23 Jan 2017 14:35:27 +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 #22 from lei.pero@gmail.com --- (In reply to Michel D=C3=A4nzer from comment #21) > (In reply to lei.pero from comment #18) > > I didn't know that about modesetting driver, anyway, even with > > LIBGL_DRI3_DISABLE=3D1 same thing happens. >=20 > Maybe chromium doesn't pass on the environment variable to its GPU helper > process, or maybe there was still a chromium process around. >=20 >=20 > > I don't how to disable tripple buffering to test it and if it's possibl= e, >=20 > Only by changing the code, > mesa/src/loader/loader_dri3_helper.c:dri3_update_num_back(). E.g. set > num_back =3D 1 in the else case. Ok, I've built mesa with that parameter changed and installed, same behavio= r. I've cloned just "git://anongit.freedesktop.org/git/mesa/mesa" , it should = be enough. On the side note, if default is glamor, EXA definitively works better on my config (not huge difference, but there is difference). I will try to invest= iate more, but I'm really not sure where to look. --=20 You are receiving this mail because: You are the assignee for the bug.= --14851821270.7dcDDbE3D.1465 Date: Mon, 23 Jan 2017 14:35:27 +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 # 22 on bug 99418<= /a> from lei.pero@gmail= .com 
(In reply to Michel D=C3=A4nzer from comment #21)
> (In reply to lei.pero from comment #18)
> > I didn't know that about modesetting driver, anyway, even with
> > LIBGL_DRI3_DISABLE=3D1 same thing happens.
>=20
> Maybe chromium doesn't pass on the environment variable to its GPU hel=
per
> process, or maybe there was still a chromium process around.
>=20
>=20
> > I don't how to disable tripple buffering to test it and if it's p=
ossible,
>=20
> Only by changing the code,
> mesa/src/loader/loader_dri3_helper.c:dri3_update_num_back(). E.g. set
> num_back =3D 1 in the else case.

Ok, I've built mesa with that parameter changed and installed, same behavio=
r.
I've cloned just "git://anongit.freedesktop.org/git/mesa/mesa" , =
it should be
enough.

On the side note, if default is glamor, EXA definitively works better on my
config (not huge difference, but there is difference). I will try to invest=
iate
more, but I'm really not sure where to look.

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