Procedural Volumetric Stars & Suns (Unity URP)

Procedural Volumetric Stars is a complete, lightweight visual effects package built specifically for Unity's Universal Render Pipeline (URP). 

Every visual element—from the boiling plasma surfaces and glowing coronas to the massive magnetic field lines and raymarched polar jets—is 100% procedural. This means you get stunning, infinite-resolution details from any distance, with zero memory overhead from heavy texture files or complex particle systems.

Try the interactive demo directly in your browser above! Use [A] / [D] to cycle through the star types, and the Mouse Scroll Wheel to zoom in and out.

What's Included in the Download?

- VolumetricStars.unitypackage: A ready-to-import Unity package containing all assets.

- 6 Star Prefabs: Yellow Dwarf, Blue Giant, Red Dwarf, Orange Dwarf, White Dwarf, and Pulsar/Neutron Star.

- 6 Custom Star Profiles: Custom ScriptableObject templates for each star type.

- 5 Procedural Shaders: Custom URP shaders for Triplanar Plasma, Volumetric Coronas, Coronal Loops (Flares), Raymarched Polar Jets, and Dipole Magnetic Fields.

- Interactive Demo Scene: The space scene with smooth camera controls and UI shown in the WebGL player.

Technical Specs and Optimization

- 100% Shader-Driven: Keeping build sizes minimal and VRAM footprint near zero.

- Volumetric Raymarching: The pulsar jets use custom raymarching inside a bounding box for true 3D depth.

- MaterialPropertyBlock: Designed for performance. Adjust star properties in real-time or animate them without memory duplication.

- URP Setup Requirements: Ensure Depth Texture, Bloom, and HDR are enabled in your project's URP pipeline settings for the best visual glow and smooth blending.

Feedback is always welcome! Even if you don't buy, please drop a comment to let me know what you think of the demo.