From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 032D9C433ED for ; Wed, 28 Apr 2021 12:46:07 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8B4A0613DC for ; Wed, 28 Apr 2021 12:46:06 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8B4A0613DC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=emersion.fr Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BB23D6EB19; Wed, 28 Apr 2021 12:46:05 +0000 (UTC) Received: from mail2.protonmail.ch (mail2.protonmail.ch [185.70.40.22]) by gabe.freedesktop.org (Postfix) with ESMTPS id 30EC86EB19 for ; Wed, 28 Apr 2021 12:46:04 +0000 (UTC) Date: Wed, 28 Apr 2021 12:45:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=emersion.fr; s=protonmail3; t=1619613961; bh=Qv0PWpGXYJy6PsM/2F2SxytW28WHtmPrNGxI+tH48HE=; h=Date:To:From:Cc:Reply-To:Subject:In-Reply-To:References:From; b=WEjHpEeLxa4+lp53R5zKnineHjAO2YoXIIELZTAU2RBsLgaFQ7kRURTFTfU1iA3On jN32bojVES/wBHfttEN7KfPRxscxVZxGe6WkieHjCk4MUrqf8qXMNh8+dDuHy+oMw3 k/SADMz2vtKjdv5vThtZr8XOZNwcuD4+lj+x/82YarG0qJRqU/ZhpkQvgMWMch5/ZS wK7rge4onWskbXH8hNR+EY6Ch8SFTVb5UQimJFEOpxWZo0K0SNIRY/oFmhWQqvQSDq 8UbUJta7xqARPeQhYegPsOYINHFu4U+3PBcFxEFw1pckdiyZiBqFHPHs/MhRz/CEq5 QmHN8s2bOt3oQ== To: Daniel Vetter From: Simon Ser Subject: Re: [Mesa-dev] [RFC] Linux Graphics Next: Explicit fences everywhere and no BO fences - initial proposal Message-ID: <_e1Ehagje93sjqgZPL8ZAGGADig6Kz46cPioyDMGLgVrl-9yBpY_mmhUZX4RgSkRvsonzSshylWcdwPiwpX0Kof1CbkQOu6ztFK8daZ-VSY=@emersion.fr> In-Reply-To: References: <735e0d2e-f2c9-c546-ea6c-b5bbb0fe03a6@gmail.com> <23ea06c825279c7a9f7678b335c7f89437d387ed.camel@pengutronix.de> <19ca36c3-306e-5021-0243-3289c38ef067@gmail.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Simon Ser Cc: =?utf-8?Q?Christian_K=C3=B6nig?= , dri-devel , ML Mesa-dev Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Wednesday, April 28th, 2021 at 2:21 PM, Daniel Vetter wrote: > Yeah I think we have pretty clear consensus on that goal, just no one yet > volunteered to get going with the winsys/wayland work to plumb drm_syncobj > through, and the kernel/mesa work to make that optionally a userspace > fence underneath. And it's for a sure a lot of work. I'm interested in helping with the winsys/wayland bits, assuming the following: - We are pretty confident that drm_syncobj won't be superseded by something else in the near future. It seems to me like a lot of effort has gone into plumbing sync_file stuff all over, and it already needs replacing (I mean, it'll keep working, but we have a better replacement now. So compositors which have decided to ignore explicit sync for all this time won't have to do the work twice.) - Plumbing drm_syncobj solves the synchronization issues with upcoming AMD hardware, and all of this works fine in cross-vendor multi-GPU setups. - Someone is willing to spend a bit of time bearing with me and explaining how this all works. (I only know about sync_file for now, I'll start reading the Vulkan bits.) Are these points something we can agree on? Thanks, Simon _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel