Installing the Fullbright Texture Pack 1.12.2 is a relatively straightforward process:

Minecraft 1.12.2 is distinct because of its modding environment. Forge mods like OptiFine (which includes an internal Fullbright toggle via Gamma override) are common, but texture-based Fullbright offers advantages:

As mentioned, 1.12.2 is the king of modded Minecraft. Many mods add complex dungeons or machines in dark voids. Placing torches in a Thaumcraft aura node or a Blood Magic altar can ruin the aesthetic. Fullbright lets you see the modded content without breaking the immersion with torches.