[vlc-devel] [PATCH 2/2] vout: vulkan: add a variety of built-in shaders

[Romain Vimont]

On Mon, Jun 22, 2020 at 11:08:44AM +0200, Niklas Haas wrote:
> On Mon, 22 Jun 2020 09:45:58 +0200, Romain Vimont <rom1v at videolabs.io> wrote:
> > > +"//!TEXTURE ravu_lut3\n"
> > > +"//!SIZE 5 648\n"
> > > +"//!FORMAT rgba16f\n"
> > > +"//!FILTER NEAREST\n"
> > > +"1a88533af88e23bb14d5c73afaa0e53ab42022bbcfc4583abb5687bb3fe2283c...
> > 
> > For info, what is this hexa string, containing 103682 chars?
> 
> It is a hard-coded look-up table of pretrained weights. The source of
> this shader is https://github.com/bjin/mpv-prescalers, which contains
> more information about how the weights were trained (and how to train
> your own, if you really want to - it's a simple linear regression).
> 
> For the curious, the weights were trained using a very scientifically
> collected database of anime movies. :)

OK, thank you for the explanation :)

> Do you want me to add this information in the commit message or a
> comment, or were you merely asking for your own curiosity?

I was curious, but I guess a comment could be useful.

(Also, in practice I think it is annoying to have a line with >100k
columns.)

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