Once Lumenline Shaders is in your shaderpacks folder alongside a shader loader such as Iris or OptiFine, you need to activate it from the video menu and confirm its lighting effects are running properly.
Activating the Shader Pack
1. Pause the game or start from the title screen and open Options, then select Video Settings.
2. Open the Shaders or Shader Packs menu provided by your shader loader.
3.
Checking That Effects Are Working
Load into an outdoor survival world during daytime to verify that all core features rendered cleanly:
- Sunlight and shadows: Look beneath nearby trees, player-built structures, and wandering mobs. You should see steady real-time shadows shifting across the ground as entities move or the sun travels, paired with bright, clean daylight across open terrain.
- Water surfaces: Walk to a river, pond, or ocean. Instead of flat vanilla textures, the water surface should mirror the sky overhead as well as adjacent terrain and blocks.
- Block appearance: Inspect your base materials. Vanilla blocks should retain their familiar core art style while taking on a noticeably warmer tone and deeper shading.
If water stays opaque or shadows do not appear beneath mobs, return to the shader selection screen and make sure the pack is actively selected rather than set to off or internal rendering.