🌌 CelestiaFlow – Dynamic Skybox Shader for Unity
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CelestiaFlow is a customizable skybox shader for Unity, designed for real-time projects such as games, VRChat worlds, and cinematic scenes. It provides full control over skies, stars, clouds, sun, moon, and atmospheric effects.
CelestiaFlow – Dynamic Skybox Shader
CelestiaFlow is a highly customizable skybox shader for Unity. It’s designed for real-time projects such as games, VRChat worlds, and cinematic scenes, giving full control over skies, stars, clouds, and celestial bodies, all part of the same.
Features
Highly Customizable This shader is to be used as an all rounder. I tried to leave it as much customizable as I could so that you could adapt for your use case. Day & Night Cycle Smooth blending between daytime and nighttime skies, with adjustable colors, gradients, and intensity. Sun & Moon Customizable size, glow, rim lighting, and placement. Stars Multi-layered starfields with adjustable density, brightness, flicker, and rotation. Clouds Two separate toggleable layers of clouds, Background and storm clouds generated via noise functions (Perlin, Worley, OpenSimplex, etc.), with density, coverage, and motion controls. You can pick and change noise functions for different random effects during runtime. Thunder Effects Lightning flashes with rim glow for dramatic skies. Ground Reflection Adjustable ground color, offset, and reflection intensity. Performance-Ready Optimized for real-time rendering and VR.
Technical Details
Engine: Unity Shader Type: Skybox Shader Inspector Parameters: 50+ exposed settings for stars, sun/moon, clouds, thunder, reflections, and blending Compatibility: VRChat World SDK (Udon compatible) Built-in Render Pipeline (HDRP not tested)
Package Contents
CelestiaFlow skybox shader Example Prefab with already set values Example Textures
License
Commercial and personal use allowed. Redistribution of the shader itself is not permitted. Please credit when credit is due. Not a standalone executable — requires Unity to use.
