From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 15293] Flash video laggy inside Firefox only with KMS
Date: Sun, 28 Feb 2010 13:59:09 GMT
Message-ID: <201002281359.o1SDx9wx030492@demeter.kernel.org>
References: <bug-15293-2300@http.bugzilla.kernel.org/>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <dri-devel-bounces@lists.sourceforge.net>
In-Reply-To: <bug-15293-2300@http.bugzilla.kernel.org/>
List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/dri-devel>,
	<mailto:dri-devel-request@lists.sourceforge.net?subject=unsubscribe>
List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=dri-devel>
List-Post: <mailto:dri-devel@lists.sourceforge.net>
List-Help: <mailto:dri-devel-request@lists.sourceforge.net?subject=help>
List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/dri-devel>,
	<mailto:dri-devel-request@lists.sourceforge.net?subject=subscribe>
Errors-To: dri-devel-bounces@lists.sourceforge.net
To: dri-devel@lists.sourceforge.net
List-Id: dri-devel@lists.freedesktop.org

http://bugzilla.kernel.org/show_bug.cgi?id=15293





--- Comment #27 from Anonymous Emailer <anonymous@kernel-bugs.osdl.org>  2010-02-28 13:59:04 ---
Reply-To: andyqos@ukfsn.org

bugzilla-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=15293
>
>
>
>
>
> --- Comment #25 from Pauli<suokkos@gmail.com>   2010-02-27 06:39:33 ---
> I vote for NOTOURBUG too.
>
> Maybe ddx could be a bit better optimized for XGetSubImage that flash is using
> but in end we can't get it perform well enough anyway without modifying the
> blob.
>
> So what exactly is happening to slow down here:
>
> -Flash is playing the video to vram.
> -Flash calls XGetSubImage multiple times per frame to read back the whole
> video.
> -XGetSubImage tries to copy data from VRAM to system memory but there seems to
> be huge latency for CPU to read the data that was just written by GPU.
>
> Hack patch: http://www.youtube.com/watch?v=JLkGGNbBJeI ;)
>

Out of curiosity, why does it work OK with UMS?

I can't see people being too pleased when their distros switch to KMS 
and they the can't play some youtube vids that they could previously.

-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

------------------------------------------------------------------------------
Download Intel&#174; Parallel Studio Eval
Try the new software tools for yourself. Speed compiling, find bugs
proactively, and fine-tune applications for parallel performance.
See why Intel Parallel Studio got high marks during beta.
http://p.sf.net/sfu/intel-sw-dev
--