From mboxrd@z Thu Jan  1 00:00:00 1970
From: Brian Paul <brianp@vmware.com>
Subject: Re: [PATCH 1/3] r600: add span support for 2D tiling
Date: Thu, 27 May 2010 09:51:43 -0600
Message-ID: <4BFE950F.3090208@vmware.com>
References: <1274829174-17491-1-git-send-email-alexdeucher@gmail.com>	<1274829174-17491-2-git-send-email-alexdeucher@gmail.com>	<AANLkTinbrfCj5pK1HkEd1_f-8rBqkwXr24mklJQ2tu7-@mail.gmail.com>
	<AANLkTinVphE2dBCOXJIC-5Tr55SgRNHgFinYQe4BAjE5@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"; Format="flowed"
Content-Transfer-Encoding: 7bit
Return-path: <dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org>
Received: from smtp-outbound-2.vmware.com (smtp-outbound-2.vmware.com
	[65.115.85.73])
	by gabe.freedesktop.org (Postfix) with ESMTP id DA8B99EC83
	for <dri-devel@lists.freedesktop.org>;
	Thu, 27 May 2010 08:51:43 -0700 (PDT)
In-Reply-To: <AANLkTinVphE2dBCOXJIC-5Tr55SgRNHgFinYQe4BAjE5@mail.gmail.com>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/dri-devel>,
	<mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/dri-devel>,
	<mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org
Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org
To: Alex Deucher <alexdeucher@gmail.com>
Cc: "dri-devel@lists.freedesktop.org" <dri-devel@lists.freedesktop.org>
List-Id: dri-devel@lists.freedesktop.org

Alex Deucher wrote:
> On Thu, May 27, 2010 at 10:55 AM, Matt Turner <mattst88@gmail.com> wrote:
>>> +static inline GLint r600_log2(GLint n)
>>> +{
>>> +       GLint log2 = 0;
>>> +
>>> +       while (n >>= 1)
>>> +               ++log2;
>>> +       return log2;
>>> +}
>> Does mesa not provide something like this?
> 
> The only one I could find was a gallium utility function.

There's a logbase2() function in teximage.c but it might not be 
equivalent.

-Brian