Full New!bright Texture Pack 1.12.2 No Optifine ✦ | FAST |

This is where the comes into play.

Navigate to your .minecraft folder (usually located at %appdata%\.minecraft ). Find and open the file with Notepad. Look for the line that says gamma:1.0 (or another number). Change the value to 10.0 or 100.0 . fullbright texture pack 1.12.2 no optifine

Specifically listed for 1.12.x through 1.20.x. This is where the comes into play