ebruneton/precomputed_atmospheric_scattering

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1061 stars · 136 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A reference C++/OpenGL implementation of the Precomputed Atmospheric Scattering (EGSR 2008) paper, with extensive documentation, unit tests, and a WebGL demo. It precomputes atmospheric scattering tables for realistic sky, aerial perspective, and light shaft rendering on Earth or other planets.

Use cases

• render a physically based sky in a game engine
• simulate atmospheric scattering for other planets
• add aerial perspective and light shafts to a renderer
• learn how precomputed atmospheric scattering works
• port atmospheric scattering shaders to WebGL
• compute sky luminance from a solar spectrum

When to choose

• you need physically accurate sky and atmosphere rendering
• you want a well-documented, tested reference implementation of the EGSR 2008 paper
• you need to adapt scattering to non-Earth planets
• you want a WebGL-ready atmosphere demo

When to avoid

• you need a full game engine or turnkey rendering framework
• you want simple stylized sky gradients without physical accuracy
• you need the complete light shaft shadow volume algorithm, which is only partially implemented

Facets

library · maturity stable

graphics simulation graphics simulation cpp cross-platform atmospheric-scattering opengl webgl sky-rendering precomputed physically-based-rendering shader game-development web

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