What it does

noRetina makes Minecraft render at half resolution on Retina displays (macOS only), which is usually more than enough and gives you a massive FPS boost — especially on Apple Silicon Macs and high-DPI external displays.

It works by disabling the Cocoa Retina framebuffer on the game window, so the GPU renders at logical pixel size instead of physical (2x) pixel size.

Why use it

2-4x FPS improvement on Retina / high-DPI macOS setups
No visible quality loss for most players (Minecraft is already pixelated)
Zero config — install and forget
Tiny mod, single mixin, no dependencies

Platform support

macOS only — the mod loads fine on Windows/Linux but does nothing there
Client-side only — safe to use on any server

Supported versions

Minecraft 1.20.1: Fabric / Forge / NeoForge
Minecraft 1.21.1: NeoForge

Installation

Drop the jar matching your loader and Minecraft version into your mods/ folder.

Credits

This is a fork of the original retiNO by juliand665. All credit for the original idea and implementation goes to them. This fork extends support to NeoForge and newer Minecraft versions.

Source

https://github.com/Jolymmiles/retiNO