From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <ffmpeg-devel-bounces@ffmpeg.org>
Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100])
	by master.gitmailbox.com (Postfix) with ESMTP id 2DC45460B0
	for <ffmpegdev@gitmailbox.com>; Sat,  3 Jun 2023 21:32:09 +0000 (UTC)
Received: from [127.0.1.1] (localhost [127.0.0.1])
	by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 21B9568C32F;
	Sun,  4 Jun 2023 00:32:06 +0300 (EEST)
Received: from w4.tutanota.de (unknown [81.3.6.165])
 by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 6D3D968B577
 for <ffmpeg-devel@ffmpeg.org>; Sun,  4 Jun 2023 00:32:00 +0300 (EEST)
Received: from tutadb.w10.tutanota.de (unknown [192.168.1.10])
 by w4.tutanota.de (Postfix) with ESMTP id 5EB87106036C
 for <ffmpeg-devel@ffmpeg.org>; Sat,  3 Jun 2023 21:32:00 +0000 (UTC)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1685827919; 
 s=s1; d=lynne.ee;
 h=From:From:To:To:Subject:Subject:Content-Description:Content-ID:Content-Type:Content-Type:Content-Transfer-Encoding:Content-Transfer-Encoding:Cc:Date:Date:In-Reply-To:In-Reply-To:MIME-Version:MIME-Version:Message-ID:Message-ID:Reply-To:References:References:Sender;
 bh=OardteEK1yynCsGrOLrFT83PSEBJ3HvwBoGWV+4f4vc=;
 b=b+GngPtqDoo4xPDYoKFbK1QNs/hPrV0wwJVYnsVzXfkYJwqM7yafcQU3FKfISk/H
 VV/5NNhtGw7Pjc05O0yqn//qKdZisB8cJx7lKcqUy2U8Gn9DZggDLR+WfnynvDPDKdL
 Q8yMakwVqG38p/O8Q2bDkuslA2jdQZEUblMSaZeTvarNaGTrA3RuUY45+f78Eq0fxb4
 yM+amsZLdIAsKrl7CQpdXCU+YVKiZyPtWaFX+q4AtlXrAwWC8QQLEFxR2d2ADtf135G
 Gr3yRWIA4aPMuFYYnncWmPQiQ22Hqi7cI5ERkQi6xJYI+HvxXHP4Pi1Md3m2qiiZMEz
 qtdeKWr//Q==
Date: Sat, 3 Jun 2023 23:31:59 +0200 (CEST)
From: Lynne <dev@lynne.ee>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Message-ID: <NX2A8wc--3-9@lynne.ee>
In-Reply-To: <20230603004328.139825-1-philipl@overt.org>
References: <20230603004328.139825-1-philipl@overt.org>
MIME-Version: 1.0
Subject: Re: [FFmpeg-devel] [PATCH] V2: avutil/hwcontext_vulkan: disable
 multiplane when deriving from cuda
X-BeenThere: ffmpeg-devel@ffmpeg.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: FFmpeg development discussions and patches <ffmpeg-devel.ffmpeg.org>
List-Unsubscribe: <https://ffmpeg.org/mailman/options/ffmpeg-devel>,
 <mailto:ffmpeg-devel-request@ffmpeg.org?subject=unsubscribe>
List-Archive: <https://ffmpeg.org/pipermail/ffmpeg-devel>
List-Post: <mailto:ffmpeg-devel@ffmpeg.org>
List-Help: <mailto:ffmpeg-devel-request@ffmpeg.org?subject=help>
List-Subscribe: <https://ffmpeg.org/mailman/listinfo/ffmpeg-devel>,
 <mailto:ffmpeg-devel-request@ffmpeg.org?subject=subscribe>
Reply-To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Errors-To: ffmpeg-devel-bounces@ffmpeg.org
Sender: "ffmpeg-devel" <ffmpeg-devel-bounces@ffmpeg.org>
Archived-At: <https://master.gitmailbox.com/ffmpegdev/NX2A8wc--3-9@lynne.ee/>
List-Archive: <https://master.gitmailbox.com/ffmpegdev/>
List-Post: <mailto:ffmpegdev@gitmailbox.com>

Jun 3, 2023, 02:43 by philipl@overt.org:

> Today, cuda is not able to import multiplane images, and cuda requires
> images to be imported whether you trying to import to cuda or export
> from cuda (in the later case, the image is imported and then copied
> into on the cuda side). So any interop between cuda and vulkan requires
> that multiplane be disabled.
>
> The existing option for this is not sufficient, because when deriving
> devices it is not possible to specify any options.
>
> And, it is necessary to derive the Vulkan device, because any pipeline
> that involves uploading from cuda to vulkan and then back to cuda must
> use the same cuda context on both sides, and the only way to propagate
> the cuda context all the way through is to derive the device at each
> stage.
>

LGTM
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel

To unsubscribe, visit link above, or email
ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".