Possible aliasing bug with NVSharpen

[0CCULTIST]

NVSharpen rather intensely re-introduces aliasing or even adds it when none was there, more so than any other sharpening shader I've tested. Not sure if this is just how the original shader works or an issue with the reshade port.

The sign above had next to no aliasing (even on edges as this game uses MSAA) before the sharpening was applied. The sharpening does NOT need to be this aggressive for aliasing to appear, I just wanted to ensure it was clearly visible.

[martymcmodding]

I ported the shader exactly from reference. I do agree the aliasing is strong and I don't really like the effect either, that's why I put it into this dump chest of a repository. It only works well when you have TAA-style blur.

I can't recall whether I checked if the shader needs to be applied in linear space or sRGB, that might make a difference. Will check when I have the time.