If the comic look is not appearing, or the game looks broken after you enable the pack, work through these checks in order.
The world still looks like plain vanilla
- Confirm a shader loader is running. Inkwell Vibrant Shadows needs Iris or OptiFine. If Video Settings has no Shader Packs or Shaders... button, the loader is not loaded.
- Check the folder. Shader packs go in the shaderpacks folder, not the resourcepacks folder. Use the button on the Shader Packs screen to open the correct folder.
- Select and apply it. Highlight the pack, then click Apply or Done. Selecting it without confirming may not activate it.
- Reload. Leave the Shader Packs screen and rejoin the world.
Visual glitches or a black screen
1. Open the Shader Packs menu and switch shaders Off to confirm the game renders normally without them.
2. Turn off other resource packs, then re-enable the shader to see if a resource pack is conflicting.
3. If you run other mods that change rendering, test with them removed to find the conflict.
4. Update your graphics drivers, since shader problems often come from outdated drivers.
Switching back quickly
To compare the cartoon look with vanilla, return to Shader Packs and choose Off. You can re-select Inkwell Vibrant Shadows at any time without restarting your world.