GLSL Pixel Clipper

Overview

This is a simple pixel clipper for mpv. You can use it alongside resampling filters to limit the amount of ringing after resampling.

The main difference between this and the built-in anti-ringing functionality is that this shader works with polar filters. Looks like polar AR is now supported in libplacebo, so this shader shouldn't really be needed anymore unless you don't like the native solution.

Set TWELVE_TAP_AR 1 if you don't want a "cut-off" impulse response with larger filters. The standard 4-tap shader is marginally better at eliminating ringing though.

You can also just remove the passes you don't need.

Instructions

Add something like this to your mpv config:

glsl-shader="path/to/shader/PixelClipper.glsl"

Inputs

You can set the following parameters:

• strength: Controls the strength of the clipping. Accepts floats between [0.0, 1.0], defaults to 0.8 for the upsampling passes and 1.0 for the downsampling pass.

Example