From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@freedesktop.org Subject: [Bug 79223] extra vsync when reading back pixels in xbmc Date: Fri, 30 May 2014 13:47:12 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1695188036==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id B579F6E109 for ; Fri, 30 May 2014 06:47:11 -0700 (PDT) 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 --===============1695188036== Content-Type: multipart/alternative; boundary="1401457631.646a520.9505"; charset="us-ascii" --1401457631.646a520.9505 Date: Fri, 30 May 2014 13:47:11 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=79223 --- Comment #9 from Pierre Ossman --- (In reply to comment #8) > The vsynced blit path for presentation is implemented by *stalling* GPU > command processing. That's a big hammer, and might be related to your > problems. You can skip this (at the cost of tearing in some cases) by > disabling SwapBuffersWait. Have you tried that, just for testing? No effect I'm afraid. Since this is a full screen application I assume it was already using flipping and not blitting anyway? -- You are receiving this mail because: You are the assignee for the bug. --1401457631.646a520.9505 Date: Fri, 30 May 2014 13:47:11 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 9 on bug 79223 from 
(In reply to comment #8)
> The vsynced blit path for presentation is implemented by *stalling* GPU
> command processing. That's a big hammer, and might be related to your
> problems. You can skip this (at the cost of tearing in some cases) by
> disabling SwapBuffersWait. Have you tried that, just for testing?

No effect I'm afraid. Since this is a full screen application I assume it was
already using flipping and not blitting anyway?

You are receiving this mail because:
  • You are the assignee for the bug.
--1401457631.646a520.9505-- --===============1695188036== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel --===============1695188036==--