Contrary to popular belief, the Fullbright resource pack for 1.8.9 does increase block light levels. Instead, it exploits a specific rendering file: misc/lightmap.png .
Minecraft version 1.8.9 remains the golden standard for competitive PvP and minigame servers. Because of its stable combat mechanics (no attack cooldown) and widespread server support, thousands of players still use this version daily. Here is why a 1.8.9 Fullbright pack is so sought after: fullbright resource pack 1.8.9
Unlike standard texture packs that change the look of blocks, a FullBright pack modifies the light map of the game. It forces the brightness level to its maximum setting internally, effectively giving you permanent "Night Vision." Key Features for 1.8.9 Total Visibility: See clearly in the deepest ravines or unlit tunnels. Performance Friendly: Contrary to popular belief, the Fullbright resource pack
The easiest and safest method. It doesn't require editing files or installing complex mods. Because of its stable combat mechanics (no attack