Radeon Image Sharpening on Linux? Hello.

The new Navi graphics cards have an exciting feature called Radeon Image Sharpening, which by all reports works great at a minimal performance hit, and is a good option for upscaling (e.g. rendering at 1800p and upscaling to 4k).

Is it possible to use this on Linux, or is it just Windows only? It would be very disappointing if it's the latter.

Thanks.