Once CCG Shaders is placed in your shaderpacks folder and you have launched Minecraft with a compatible shader loader such as Iris or OptiFine, you need to enable it in your settings and confirm its lighting features are working properly.
Selecting the Shader Pack
1. Load into a singleplayer world or server so you can see changes immediately.
2. Press Esc and open Options, then select Video Settings.
3. Open the Shaders or Shader Packs menu provided by your shader loader.
4. Click CCG Shaders in the list and apply your changes. Give the game a moment to reload the terrain renderer.
5. Return to your world once the screen finishes refreshing.
Confirming the Effects Work
Walk outside during daytime in any biome and look toward the horizon. You should immediately notice realistic atmospheric lighting painting the sky rather than flat vanilla colors. Next, look at trees, hills, and building ledges; blocks and terrain should cast smooth, soft shadows instead of standard blocky shading.
Place down a torch, light a block on fire with flint and steel, or place bright light-emitting blocks like glowstone or sea lanterns. Each of these sources should display a vibrant glowing bloom around it. If the world still looks completely vanilla, open your shaderpacks folder from the Shaders menu and make sure the pack is not accidentally nested inside an extra outer folder.