From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: GMA HD driver support for hardware acceleration Date: Tue, 01 Feb 2011 10:41:01 +0000 Message-ID: <849307$bcrjdk@azsmga001.ch.intel.com> References: <4D47DD46.2010202@tataelxsi.co.in> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga14.intel.com (mga14.intel.com [143.182.124.37]) by gabe.freedesktop.org (Postfix) with ESMTP id 1F8B99E755 for ; Tue, 1 Feb 2011 02:41:05 -0800 (PST) In-Reply-To: <4D47DD46.2010202@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: sudeep , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org On Tue, 01 Feb 2011 15:45:34 +0530, sudeep wrote: > Hi All, > > I am a starter in Linux graphics. Our development board is > *MATXM*-*CORE*-*411*-*B* from Emerson. It has > Intel i5 core and QM57 chip set. We have a a requirement to use the > hardware acceleration for various graphics > operations such as blit, blend etc. > 1)Does the Linux graphics driver for GMA-HD(in our understanding, i915) > support hardware acceleration for > blit/blend operations? Yes. Though the BLT engine (the blitter) can not do alpha blend nor scaling, it is a pure bitblt. To do alpha blending and other "advance" blits, you need to use the 3D pipeline (as on all previous genX). Ideally you would use GL. > 2)How to test and verify the hardware acceleration for blit/blend > operations in GMA-HD platform The hardware contains a couple of register to show GPU activity. These are exposed in intel-gpu-tools/tool/intel_gpu_top, which shows how busy the GPU is. Assuming that tracing the actual emission of GPU commands doesn't convince you that the operations are being performed on the GPU. -Chris -- Chris Wilson, Intel Open Source Technology Centre