From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264663AbUESXia (ORCPT ); Wed, 19 May 2004 19:38:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264664AbUESXia (ORCPT ); Wed, 19 May 2004 19:38:30 -0400 Received: from gate.crashing.org ([63.228.1.57]:60093 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S264663AbUESXiU (ORCPT ); Wed, 19 May 2004 19:38:20 -0400 Subject: Re: [Linux-fbdev-devel] Re: FB accel capabilities patch From: Benjamin Herrenschmidt To: Andrew Morton Cc: David Eger , Linux Fbdev development list , Linux Kernel list In-Reply-To: <20040519030319.1f0e6eec.akpm@osdl.org> References: <20040519030319.1f0e6eec.akpm@osdl.org> Content-Type: text/plain Message-Id: <1085009460.15182.87.camel@gaston> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Thu, 20 May 2004 09:31:01 +1000 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2004-05-19 at 20:03, Andrew Morton wrote: > David Eger wrote: > > > > A month or two ago I noticed that the framebuffer console driver doesn't > > know to do proper framebuffer acceleration in Linux 2.6; > > For what fbdev operations will acceleration be used? Ok, the story is ... fbdevs do have optional accel hooks for copyarea, rectfill, and imageblit. However, the current fbcon console subsystem doesn't properly adapt it's drawing techniques based on the accel capabilities (blit + redraw is more efficient for example when you have a fast accelerated copyarea, while full redraw is better in other cases, etc...) This patch adds "hints" provided by the fbdev to inform fbcon what are its accel capabilities. Ben.