In practice, what players call a “Fullbright texture pack” is a resource pack containing a modified file. The lightmap controls how brightness and darkness are rendered across different light levels. A Fullbright lightmap overrides the game’s lighting engine, making all blocks appear as if they are in full daylight (light level 15), regardless of torches, night, or caves.
If you still want a lightmap-based “pack” for 1.12.2, here is the safe DIY method (no download link needed): fullbright texture pack 1122 link
You can find the Fullbright texture pack for Minecraft 1.12.2 on various websites that host Minecraft resources. Here are a few options: In practice, what players call a “Fullbright texture
: It can often be layered on top of other texture packs. By placing it at the top of your resource pack list in the game settings, you can keep your favorite stylized textures while still benefiting from the fullbright effect. If you still want a lightmap-based “pack” for 1