Subpixel Neatest

A nearest upscaling algorithm variant, apply CRT-like vertical scanline but not make them too aggressive.
By adding phosphor scanline to image, it magically brings anti-aliasing effect
but also doesn't make image blurs like if doing Bicubic or FSR 1.0.
In ideal situation, scaling result can beat FSR 1.0 or Lossless Scaling LS1.

I believe something happened out there at the LCD subpixel area.
There is also font rendering solution utilize LCD subpixel like Microsoft Cleartype, RGB subpixel font anti-aliasing.

Some people report this effect doesn't work on non HiDpi displays.
Generally, why the upscaling method will work and suitable for some people like me,
the principleis still pretty unknown.

I have no knowledge about graphical programming,
You're welcome to share your thought, optimization, or correct implementation of certain feature.

Drawbacks

• Require higher monitor brightness to provide most correct image.
  Although color boost generally improves brightness, but suffer in color distortion.
• May work only on HiDpi displays, like 24 inch 3840x2160.

Install

Put to Magpie effects folder like effects\Phosphor.hlsl.

Usage

• Phosphor.hlsl is the best choice, but you need to give your monitor more brightness manually.
• Phosphor_All.hlsl add color boost switch, which allows brighter image without raise monitor brightness.
  But in some case it distorts color of the image.

Phosphor_All

Enable Color Boost:
Try make image brighter while apply scanline.
Color Boost Value:
Higher value presents brighter image, default value should look like standard nearest.
Set to 1.0 will disable color boost.