Using Cubic Sun and Moon Alongside Shader Packs

Cubic Sun and Moon keeps vanilla sky colours and lighting intact, making it work smoothly with shader loaders like Iris or OptiFine. However, many shader packs draw their own round procedural celestial bodies, which will hide or conflict with the 3D cubes unless configured properly.

Preventing Shaders from Overriding the Sky

1. Open Options, go to Video Settings, and open your Shader Packs menu.

2. Select your active shader and open Shader Pack Settings.

3. Look for a sky, atmosphere, or celestial category inside the shader's configuration menu.

4. Turn off the shader's custom sun and moon rendering, or switch its sun and moon option back to default/vanilla textures.

5. Apply the changes and look up at the daytime or nighttime sky to verify the 3D cube is visible.

Checking Sky Lighting and Sunrise Colours

Once the shader stops replacing the sun and moon textures itself, the shader's lighting engine will interact naturally with the pack. Because Cubic Sun and Moon only reshapes the celestial textures into 3D cubes without altering vanilla colour palettes or light levels, your sunrises, sunsets, and moonlit nights will still blend properly with your shader's atmospheric fog and bloom effects. If the sun still appears flat or circular after changing settings, double-check Video Settings (under Details in OptiFine) to ensure vanilla Sun & Moon rendering is turned on.