From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: Hardware acceleration for blit/fillrect in GMA-HD driver(i915) Date: Wed, 02 Feb 2011 13:08:14 +0000 Message-ID: <0d30dc$kuj6no@orsmga001.jf.intel.com> References: <4D494082.1030603@tataelxsi.co.in> <1bdc18$jfbs48@fmsmga002.fm.intel.com> <4D4951B5.5030303@tataelxsi.co.in> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id 0FC269E73F for ; Wed, 2 Feb 2011 05:08:18 -0800 (PST) In-Reply-To: <4D4951B5.5030303@tataelxsi.co.in> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Neeraj N T Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Wed, 02 Feb 2011 18:14:37 +0530, Neeraj N T wrote: > Hi, > Thanks for replying. > By ' acceleration layers in user space ' are you referring to graphics > libraries like DirectFB,OpenGL..etc..? > Could you please shed some light into how they use the hardware > acceleration ? ( Like are they mmap'ing to > a graphics hardware (GMA-HD) specific video memory?) The hardware resources are managed by the kernel, which presents the GEM api to userspace: http://lwn.net/Articles/283798/ . And the chipset documentation can be found at http://intellinuxgraphics.org/ . But it does sound like you are trying to reinvent the wheel and tie yourself into a single and very limited platform... -Chris -- Chris Wilson, Intel Open Source Technology Centre