From: Lynne <dev@lynne.ee>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH] V2: avutil/hwcontext_vulkan: disable multiplane when deriving from cuda
Date: Sat, 3 Jun 2023 23:31:59 +0200 (CEST)
Message-ID: <NX2A8wc--3-9@lynne.ee> (raw)
In-Reply-To: <20230603004328.139825-1-philipl@overt.org>
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
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prev parent reply other threads:[~2023-06-03 21:32 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-03 0:43 Philip Langdale
2023-06-03 21:31 ` Lynne [this message]
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