Select the pack from the "Available" list to move it to the "Selected" column.
Since it’s just a texture change, it won’t tank your FPS (frames per second). How to Install X-Ray for Minecraft 1.12.2 x ray 112 2 resource pack
Unlike a mod that alters the game’s code, the works by modifying the textures of "filler" blocks like stone, dirt, and gravel. By making these common blocks transparent while keeping ores, chests, and mobs opaque, it creates a "wireframe" view of the underground. Why Version 1.12.2? Select the pack from the "Available" list to
Go to Options > Resource Packs > Open Resource Pack Folder . and mobs opaque