[FFmpeg-user] Is libplacebo only for GPUs?

[Andrew Randrianasulu]

пт, 16 мая 2025 г., 01:48 Ferdi Scholten <ferdi at sttc-nlp.nl>:

> > пт, 16 мая 2025 г., 00:12 Mark Filipak<markfilipak.imdb at gmail.com>:
> >
> >> On 15/05/2025 16.44, Carl Zwanzig wrote:
> >>> On 5/15/2025 1:33 PM, Mark Filipak wrote:
> >>>> What if I don't have a GPU?
> >>> Then you have a 25+ year old video card?
> >> Laptop
> >>
> >>> AFAIK all video chips for the last few decades have had
> >>> some form of GPU, although it may not be that useful or not accessible
> >> for offload processing.
> >>
> >> FFmpeg says, "using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX"
> >> I guess "AVX" is a GPU? I have no idea.
> >>
> > no, just another cpu SIMD extension ....
> >
> > but llvmpipe/lavapipe (software Vulkan rasterizer) probably can use it.
> >
> >
> >
> >>> A better question might be "What if I don't have a supported GPU?"
> >> It's not a _better_ question, Carl, it's the _next_ question.
> >>
> >>
> Does anyone ever care to read documentation?
> "
>
> libplacebo currently supports Vulkan (including MoltenVK), OpenGL, and
> Direct3D 11. It currently has the following minimum hardware requirements:
>
>   * *Vulkan*: Core version 1.2
>   * *OpenGL*: GLSL version >= 130 (GL >= 3.0, GL ES >= 3.0)
>   * *Direct3D*: Feature level >= 9_1
>
>
> "
> Otherwise, if you have a laptop that was produced after 2010 its
> hardware almost certainly supports libplacebo in some way as the oldest
> of the hardware requirements being OpenGL 3.0 was supported by almost
> all video devices (either dedicated or built in the processor) of the
> time. OpenGL 3.0 was released in 2008.
> The same if you are on Windows, Direct3D Feature level 9_1 was released
> in 2008
> Vulkan is much more recent, version 1.2 is from 2020
>
> In other words for Intel based laptops, everything going back to Sandy
> Bridge has hardware support for libplacebo and for AMD based this goes
> back to the K10 series processors.
>
>  From the documentation:
> "
> In principle, libplacebo has no mandatory dependencies - only optional
> ones. However, to get a useful version of libplacebo. you most likely
> want to build with support for either|opengl|,|vulkan|or|d3d11|.
> "
>
> For sure, running FFmpeg with libplacebo on Sandy Bridge hardware won't
> be fast at all. But it will make use of hardware acceleration via OpenGL
> ( or DirectX if you use Windows < 10 )
>


I was under impression ffmpeg's libplacebo filter is Vulkan-only.

Libplacebo itself yes, should support other graphics APIs, but sadly not in
ffmpeg context ?


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