The primary appeal of a fullbright pack in 1.12.2 is its simplicity. Unlike complex shaders or heavy resource packs that can tank your frame rate, fullbright works by modifying the internal light maps of the game textures. This ensures that every block is rendered at maximum brightness regardless of the actual light level. Whether you are deep-sea diving for monuments or mining at diamond level, the world remains perfectly crisp and visible.

Now caves are fully bright without any pack.

Here are some key benefits and features of the Fullbright texture pack 1.12.2: