Turn On Luca Eye Shader and Check That It Is Working

Luca Eye Shader is a shader pack, so it runs through a shader loader such as Iris or OptiFine, not through the regular Resource Packs screen.

Load the pack

1. Launch Minecraft with your shader loader active.

2. Open Options → Video Settings → Shader Packs (the exact label depends on your loader).

3. If the pack is not listed, click the button that opens the shader pack folder, place the Luca Eye Shader file there, then return to the menu. Leave the file zipped unless your loader asks otherwise.

4. Select Luca Eye Shader in the list and click Apply or Done. Expect a short freeze while the shaders compile.

Confirm it is running

Load a world in daylight and look for the pack's signature style. It mixes cartoon and realistic looks, so you should see:

• Vibrant colors on grass, leaves and blocks, noticeably richer than vanilla.
• Soft, blurred shadows under trees and around builds, with plenty of detail instead of hard-edged blocks of darkness.
• A bright sky with balanced contrast, so the horizon does not look washed out.

If the world looks exactly like vanilla, reopen the shader menu and make sure the pack is selected and not set to "Off" or "(internal)". If the game fails to apply it, check that your loader is installed for the Minecraft version you are running.