# SlightlyMad/VolumetricLights

Volumetric Lights for Unity

Repository: https://github.com/SlightlyMad/VolumetricLights
Canonical: https://ross.abutalabs.com/products/volumetriclights
Language: C#
License: BSD-3-Clause
License Family: permissive
Last push: 2018-08-25T10:16:45+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3810, "days_push": 2930, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2116, forks 303 (observed 2026-08-28T04:06:16.236466+00:00)

## What it is
An open-source Unity extension that adds volumetric fog and light shafts to built-in Unity lights using ray marching in the light's volume. It supports point, spot, and directional lights with volumetric shadows, cookies, and animated noise.

## Use cases
- add volumetric fog to unity lights
- render god rays and light shafts in unity
- volumetric shadows for spot and point lights
- mie scattering fog effect for a game scene
- open source alternative to unity volumetric lighting assets

## When to choose
- you use Unity's built-in render pipeline and want BSD-licensed volumetric lighting
- you need volumetric effects for point, spot, and directional lights with shadows and cookies
- you want to study or modify a ray-marched volumetric fog implementation

## When to avoid
- you use Unity's Scriptable Render Pipeline (URP/HDRP), which has its own volumetric solutions
- you need production-grade, actively maintained volumetric lighting
- your project targets engines other than Unity

## Facets
- artifact type: plugin
- maturity: maintenance
- function: graphics, simulation, game-engine
- domain: graphics
- platform: game-engine, cross-platform
- tags: unity, volumetric-lighting, raymarching, shader, god-rays, volumetric-fog, c-sharp, game-development

## Member repositories
- SlightlyMad/VolumetricLights (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:16.236466+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:53:19.251742+00:00, confidence not recorded.
  - readme: https://github.com/SlightlyMad/VolumetricLights (fetched 2026-08-28T04:06:16.236466+00:00, sha 095959c71586)
- Data as of 2026-08-30T08:39:29.467469+00:00.