TexTweaks

The mod gives control over texture mipmapping, which the default game limits to four levels. Using a higher resolution texture pack, mipmaps can be generated all the way down to 1x1, and the game can be made to generate more levels for textures whose sizes are powers of two. Upscaling textures to the same size the game uses lets it generate higher mipmap levels without manual image work. A comparison between 4x and 8x mipmapping using a 256x resource pack is included to show the difference in detail.

The mod also rescales textures at runtime, both upscaling and downscaling, with a choice of linear or nearest neighbor algorithms. Its LOD Bias setting controls how far away a texture must be before the next mipmap level is used, which tunes sharpness and aliasing on distant textures. Setting the bias high produces a noticeably different look. Reducing hardware demand is another purpose, since high resolution packs can be played with lower mipmap levels or 1x1 textures.

TexTweaks is a client mod and runs on Fabric for 1.16.5. Its files exist for 1.16.2, 1.16.3, 1.16.4 and 1.16.5, and the latest is 1.16.5-1.5.0 from 2021-03-22. It is released under the MIT License and is open source.