Since it only changes textures, it doesn't drain your FPS like heavy shaders or mods.
Installing a texture pack is significantly faster than installing a mod. Follow these steps to get started: minecraft 1.12 xray texture pack
The 1.12 version of Minecraft is unique because it uses the older block ID system, making these texture packs incredibly lightweight and fast. Since it only changes textures, it doesn't drain
While X-Ray texture packs are a powerful tool for single-player survival, most multiplayer servers consider them a form of cheating. Many servers use "Anti-Xray" plugins that turn hidden ores into stone until you are directly touching them. Always check the rules of your favorite server before using a utility like this to avoid a permanent ban. While X-Ray texture packs are a powerful tool
Even though the stone is gone, the "air" underground is still technically dark. Drinking a Night Vision potion or using a Full Bright mod will make every ore glow as if it were in direct sunlight. A Note on Multiplayer Fairness