Support of AMD graphics processing units

[bananakid]

Thank you for your display color management solutions, @ledoge!

I hope you'll add support for AMD GPUs to novideo_srgb in the future. While AMD Software sRGB emulation does it's job for clamping wide color gamut display to sRGB color space, AMD users have to rely onto dwm_lut to get any different color space (like Display P3). But dwm_lut lacks step-by-step setup guide (it's no more, I put it together), affects performance and is kind of discontinued.

[bananakid]

It appears there is an alternative of novideo_srgb for AMD GPUs by @dantmnf with AMDColorTweaks. It has some TRC-related limitations but it definitely works. It's worth a look and the developer is a nice person too!

P.S. Here's a quick guide on setting it up for clamping wide color gamut display to Display P3 color space.