This happens because Minecraft’s lighting engine calculates darkness inside solid ground, even if the stone textures are invisible. To fix this and make the ores glow brightly, use one of these two methods: Method 1: Turn off Smooth Lighting (Easiest Fix) Go to > Video Settings . Find Smooth Lighting and toggle it to OFF . Set your Brightness slider to Bright . Method 2: Drink a Night Vision Potion
Obtain the correct Xray pack
Before diving into the installation, let's understand the appeal: xray texture pack 188 eaglercraft install