From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: Re: nvidia: how to use overlay Date: Fri, 21 Jan 2005 06:00:20 +0800 Message-ID: <200501210600.20625.adaplas@hotpop.com> References: Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1CrkLx-0001So-I1 for linux-fbdev-devel@lists.sourceforge.net; Thu, 20 Jan 2005 14:00:33 -0800 Received: from smtp-out.hotpop.com ([38.113.3.61]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.41) id 1CrkLw-0002lv-59 for linux-fbdev-devel@lists.sourceforge.net; Thu, 20 Jan 2005 14:00:33 -0800 Received: from hotpop.com (kubrick.hotpop.com [38.113.3.103]) by smtp-out.hotpop.com (Postfix) with SMTP id D1CCAD31153 for ; Thu, 20 Jan 2005 22:00:18 +0000 (UTC) In-Reply-To: Content-Disposition: inline Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: linux-fbdev-devel@lists.sourceforge.net, feedback@linux-fbdev.sourceforge.net On Thursday 20 January 2005 20:18, feedback@linux-fbdev.sourceforge.net wrote: > gongpu (gongp03@hotmail.com) has submitted this feedback > for nvidia > > In my project which I\'m working on, I want to display two layer. One is > for some video information. The other is for some symbols. I know how to > use frame buffer to write directly to the video ram. But how to implement > these two layers? SDL sdk gives some overlay functions, but I think it was > implemented in software. How to use hardware overlay? Of course, I\'m sure > that my video card surpport this kind of overlay. I\'ll be very appreciated > if you can tell me how to do it or where I can find relative information. > Thanks for reading. Waiting for your answer. Try DirectFB (www.directfb.org). They have an nvidia driver that supports multiple layers (usually primary + overlay). You can use SDL on DirectFB by the way. Note: I don't know the status of the DirectFB nvidia driver, but it seems there is a flurry of development recently. Tony ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl