Once NMS Normal Map Shaders is placed in your shaderpacks folder alongside a shader loader like Iris or OptiFine, you can switch between standard Minecraft visuals and the technical normal map display directly from the pause menu.
Activating the Shader Pack
1. Launch Minecraft and load into any singleplayer world or multiplayer server.
2. Press Esc to open the pause menu, then click Options and select Video Settings.
3. Open the Shaders (or Shader Packs) menu.
4. Select NMS Normal Map Shaders from the list of available packs.
5.
When you return to your world, all blocks, held items, and mobs will immediately appear painted in bright colors representing their surface directions.
Switching Back to Normal Textures
Because the pack replaces standard shading with directional colors, tasks like sorting chests or reading signs may occasionally require normal visuals. To return to standard rendering without leaving your world:
1. Reopen Options > Video Settings > Shaders.
2. Select Off (or disable shaders using your shader loader's toggle button at the top of the menu).
3. Click Done to restore vanilla block and item colors instantly.