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 13:21:52 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1237747289==" Return-path: Received: from culpepper.freedesktop.org (unknown [131.252.210.165]) by gabe.freedesktop.org (Postfix) with ESMTP id 45EF96E49B for ; Fri, 30 May 2014 06:21:52 -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 --===============1237747289== Content-Type: multipart/alternative; boundary="1401456112.f1665B0.3581"; charset="us-ascii" --1401456112.f1665B0.3581 Date: Fri, 30 May 2014 13:21:52 +0000 MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" https://bugs.freedesktop.org/show_bug.cgi?id=79223 --- Comment #7 from Pierre Ossman --- Anyhoo, getting back to the matter at hand. I set up a new machine so I can more easily do debugging of this. The hardware is instead: 00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Richland [Radeon HD 8510G] Not identical, but should be a very similar chip (ARUBA vs TURKS). I am still seeing the frame rate problem on this machine. It is however not constant, and comes and goes. I am running a lower resolution here, which might be a factor. Also, for some reason I am not getting delays in glReadPixels(). So whatever goes wrong must be happening some place else. I turned on some of the gallium overlays. Not sure if this tells you anything: - Normal playback: buffer wait time of 15k-20k - With glReadPixels(): ~35k - When the bug strikes: jumps to ~50k The frame rate frop and buffer wait time increases are perfectly synchronised every time. -- You are receiving this mail because: You are the assignee for the bug. --1401456112.f1665B0.3581 Date: Fri, 30 May 2014 13:21:52 +0000 MIME-Version: 1.0 Content-Type: text/html; charset="UTF-8"

Comment # 7 on bug 79223 from 
Anyhoo, getting back to the matter at hand.

I set up a new machine so I can more easily do debugging of this. The hardware
is instead:

00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Richland [Radeon HD 8510G]

Not identical, but should be a very similar chip (ARUBA vs TURKS).


I am still seeing the frame rate problem on this machine. It is however not
constant, and comes and goes. I am running a lower resolution here, which might
be a factor.

Also, for some reason I am not getting delays in glReadPixels(). So whatever
goes wrong must be happening some place else.



I turned on some of the gallium overlays. Not sure if this tells you anything:

 - Normal playback: buffer wait time of 15k-20k

 - With glReadPixels(): ~35k

 - When the bug strikes: jumps to ~50k

The frame rate frop and buffer wait time increases are perfectly synchronised
every time.

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