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: Fri, 20 Jan 2017 03:28:05 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1334011957==" Return-path: Received: from culpepper.freedesktop.org (culpepper.freedesktop.org [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 7BC4D6EAD9 for ; Fri, 20 Jan 2017 03:28:05 +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 --===============1334011957== Content-Type: multipart/alternative; boundary="14848828850.De0CE5.22671"; charset="UTF-8" --14848828850.De0CE5.22671 Date: Fri, 20 Jan 2017 03:28:05 +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 #17 from Michel D=C3=A4nzer --- (In reply to lei.pero from comment #14) > It does happen on modesetting driver regardless of DRI version, strange. The modesetting driver doesn't allow disabling DRI3 on the server side. You= can always disable it on the client side though with the environment variable LIBGL_DRI3_DISABLE=3D1 . The fps graph shows the same framerate in both videos, so the problem seems rather about animation timing. It might be related to the fact that DRI3 al= lows triple buffering, and might be at least partially an application issue. It would be interesting though if it also happens with a non-AMD GPU. BTW, is there any particular reason why you're disabling sync-to-vblank? It= is the intended mechanism for smooth animation... --=20 You are receiving this mail because: You are the assignee for the bug.= --14848828850.De0CE5.22671 Date: Fri, 20 Jan 2017 03:28:05 +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 # 17 on bug 99418<= /a> from Michel D=C3=A4nzer 
(In reply to lei.pero from comment #14)
> It does happen on modesetting driver regardless =
of DRI version, strange.

The modesetting driver doesn't allow disabling DRI3 on the server side. You=
 can
always disable it on the client side though with the environment variable
LIBGL_DRI3_DISABLE=3D1 .

The fps graph shows the same framerate in both videos, so the problem seems
rather about animation timing. It might be related to the fact that DRI3 al=
lows
triple buffering, and might be at least partially an application issue. It
would be interesting though if it also happens with a non-AMD GPU.

BTW, is there any particular reason why you're disabling sync-to-vblank? It=
 is
the intended mechanism for smooth animation...

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