[FFmpeg-devel] [PATCH v4 03/11] libavutil/hwcontext_d3d11va: adding more texture information to the D3D11 hwcontext API

[Artem Galin]

New version of patch is available by link
https://patchwork.ffmpeg.org/project/ffmpeg/list/?series=1253

On Sun, 10 May 2020 at 00:55, Soft Works <softworkz at hotmail.com> wrote:

> > -----Original Message-----
> > From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf Of
> > Artem Galin
> > Sent: Sunday, May 10, 2020 1:19 AM
> > To: FFmpeg development discussions and patches <ffmpeg-
> > devel at ffmpeg.org>
> > Subject: Re: [FFmpeg-devel] [PATCH v4 03/11] libavutil/hwcontext_d3d11va:
> > adding more texture information to the D3D11 hwcontext API
> >
> > On Sat, 9 May 2020 at 22:29, Soft Works <softworkz at hotmail.com> wrote:
> >
>
> > > You replied:
> > > > yes, it is only a hint for D11 when possible.
> > >
> > > I would understand 'when possible' in a way that D3D9 would be used
> > > 'when not possible'.
> > >
> > > If that's true, it means, that an ffmpeg user executing a command line
> > > cannot be sure whether D3D9 or DX11 will be used. That would mean that
> > > the behavior is not deterministic.
> > >
> > This is not true, it is your assumptions.
> > Behavior is deterministic:
> > DX11 by default.
> > DX9 if user selects it explicitly via command line.
>
> > > > > But still, even with your patch: What will happen when DX11 is not
> > > > > available?
> > > > >
> > > > > Will it
> > > > >
> > >
> > Please read the patch
> >
> > > > > 1. fail?
> > >
>
> > Yes
>
>
> Thanks for confirming this. Deterministic behavior instead of
> auto-selection
> Is important and should not be changed.
>
> But on the other side, it needs to be clear to everybody, that this once
> again
> adds even more to the list of situations that the patch will break: In
> this case,
> it's all Windows versions where DX11 is not available.
>
> Best regards,
> softworkz
>
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