From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1SJWML-00026K-Jj for garchives@archives.gentoo.org; Sun, 15 Apr 2012 20:47:46 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 1FF65E0DA4; Sun, 15 Apr 2012 20:47:30 +0000 (UTC) Received: from mail-wi0-f181.google.com (mail-wi0-f181.google.com [209.85.212.181]) by pigeon.gentoo.org (Postfix) with ESMTP id 41611E0D3B for ; Sun, 15 Apr 2012 20:45:59 +0000 (UTC) Received: by wibhr17 with SMTP id hr17so4139315wib.10 for ; Sun, 15 Apr 2012 13:45:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:to:subject:date:message-id:user-agent:in-reply-to:references :mime-version:content-transfer-encoding:content-type; bh=Xp1ojq0BXrYYOqujTQjIcrdUy85TzMpt98frjhhC/80=; b=ZvbK4eTV315tY+Lm9CVGiHDEdEonwYWgvSPVkBidETOwHbVl99hbgJf9v8T0/Vv8AO 4sOfnto3Xs+149q194srlu3FZKArNFptBFWUuBc5xJjVkfUsI/Z0OG9Z7wZ8Lgo6gwDC TpAWV9W5z9nB5G1E1ODi9WEkbFz+e1OV+6YW62Y2S4FTBdqpi3+f3B4uqzzrrL9dQqZp SF/yz1lnxaq9g8IpQh9PqNXnLZiGSNmKFWeuGD+LOgSjtNEpndgl0iaXk5Ni+fnAfgz2 2ZUn0P+ku1MOPdQNSJOFbj9wF31hPs2dEpzaSLlJA4YlV97eo/flWrMKshmUYrDvPxMu FN2A== Received: by 10.216.138.135 with SMTP id a7mr5401690wej.19.1334522759142; Sun, 15 Apr 2012 13:45:59 -0700 (PDT) Received: from energy.localnet (p4FC61C1D.dip0.t-ipconnect.de. [79.198.28.29]) by mx.google.com with ESMTPS id gg2sm23739046wib.7.2012.04.15.13.45.56 (version=TLSv1/SSLv3 cipher=OTHER); Sun, 15 Apr 2012 13:45:57 -0700 (PDT) From: Volker Armin Hemmann To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] PCI video cards, hardware accel, upported by open-source drivers? Date: Sun, 15 Apr 2012 22:45:51 +0200 Message-ID: <11941715.7oCXCqHLg1@energy> User-Agent: KMail/4.8.2 (Linux/3.0.27; KDE/4.8.2; x86_64; ; ) In-Reply-To: <4F8ADEDB.2030303@binarywings.net> References: <20120410112621.GA10304@waltdnes.org> <4F8ADEDB.2030303@binarywings.net> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" X-Archives-Salt: 92c7098d-17b5-488b-bd3c-cd52611737e2 X-Archives-Hash: fed03640d0601493430d53c592521826 Am Sonntag, 15. April 2012, 16:44:43 schrieb Florian Philipp: > Am 15.04.2012 16:22, schrieb Michael Mol: > > On Sun, Apr 15, 2012 at 10:09 AM, Florian Philipp wrote: > >> Am 15.04.2012 15:18, schrieb Walter Dnes: > >>> On Wed, Apr 11, 2012 at 06:30:02PM +0200, Volker Armin Hemmann wrote > >>> > >>>> Am Mittwoch, 11. April 2012, 02:11:35 schrieb Walter Dnes: > >>>>> If it's PCIe, so be it. Actually, a post that prevents me wasting > >>>>> > >>>>> money is helpful . Would PCIe be significantly better on the same > >>>>> CPU+GPU, or is it hype? > >>>> > >>>> a lot, lot lot lot better. No hype. > >>>> > >>> I've done some looking, and I'm back with more questions. I've also > >>> > >>> read the Nouveau-versus-NVIDIA thread. Questions... > >>> > >>> 1) Will PCIe 2.0 cards work in a PCIe 1.0 slot? I'm not expecting 2.0 > >>> performance, I just want full backwards compatability. PCIe 1.0 cards > >>> seem to be rare, and have to be ordered online, while I can pick up a > >>> 2.0 card locally at a store. > >> > >> PCIe-2.0 is fully downward compatible to 1.1 and 1.0. > >> > >>> 2) My main "torture test" will be HD fullscreen video. Will there be > >>> major improvement in that? That's 2D. Forget 3D. > >> > >> 2D video is still rendered using OpenGL if your video player supports it. > > > > I'm not aware of any video decoders using CUDA, OpenCL, or pixel > > shaders for video decoding; AFAIK, unless you're using VDPAU you're > > still using the CPU to render the video to a frame buffer. The most a > > video player is going to use OpenGL for is stretching that frame > > buffer to fit a window or screen, and possibly as a compositor to > > place overlays like subtitles or playback control elements.. > > Agreed. Decoding is still usually done in software but offloading > scaling and YUV to RGB conversion helps none the less. Mplayer, for > example, allows a lot of customization depending on the amount of > texture units. With high resolution displays and slow CPUs, this can > have surprisingly large effects. > and with vlc you can use vaapi which can make use of the video decoding engine of the graphic chip. If the movie is using the right codec, of course. -- #163933