[updated] Fullbright Texture Pack 1.12.2 No Optifine Site

While many users believe that a "Fullbright" effect in Minecraft 1.12.2 requires Optifine, you can actually achieve total visibility in dark caves and at night using a specialized resource pack or a simple system file edit.

Examples & references (what to look for) fullbright texture pack 1.12.2 no optifine

Move the pack from the "Available" side to the "Selected" side in-game. While many users believe that a "Fullbright" effect

Comparison: No Optifine Pack vs. Optifine "Dynamic Lights"

The 1.12.2 era was the golden age of Optifine. If you can run Optifine, the Optifine Internal Shader (Gamma slider) is superior because you can toggle it on/off with a hotkey. Use textures that mimic emissive material by painting

• Use textures that mimic emissive material by painting bright “glow” areas and removing ambient shading.
• Because Minecraft 1.12.2 doesn’t support emissive maps natively, this is only visual; in-game light level doesn’t increase.

It’s not elegant, it’s not perfect, but for a quick fix to see in the dark on a modded 1.12.2 server? It gets the job done.