Implement real time atmospheric scattering algorithms

hanyangl5 commented 2 years ago

some ref:

Real Time Rendering of Atmospheric Scattering Effects for Flight Simulators, Ralf Stokholm Nielsen.
SIG19 Creating the Atmospheric World of Red Dead Redemption 2 A Complete and Integrated Solution, Advances in Real-Time Rendering in 3D Graphics and Games – SIGGRPAH 2019
Lighting Research at Bungie, Hao Chen, Natalya Tatarchuk, Advances in Real-Time Rendering in 3D Graphics and Games, Siggraph 2009.
Precomputed Atmospheric Scattering. Bruneton, E. and Neyret, F. EGSR 2008. Computer Graphics Forum.
Real-Time Volumetric Rendering, By Patapom / Bomb! (spring 2013, course notes for the Revision Demo Party)
Real Time Volumetric Cloudscapes of Horizon Zero Dawn, ADVANCES IN REAL-TIME RENDERING 2015
Real-Time Samurai Cinema Lighting,Atmosphere,andTonemapping in GHOST, SIGGRAPH 2021 ADVANCES IN REAL-TIME RENDERING IN GAMES course.
A Scalable and Production Ready Sky and Atmosphere Rendering Technique, EPIC GAMES

hanyangl5 commented 2 years ago

The-Forge is an open source cross-platform rendering framework, it provides a middleware Ephemeris which implemented dynamic 24 hour Skydome System, some features in it are useful.

Dynamic 24 hour time cycle (sunrises, sunsets, blue sky, sun and moon)
Atmospheric Scattering
Volumetric Clouds
Godrays
Procedural Night Sky and Star-field
Simulation of astronomically correct sun, stars and moon (coming soon)
2.5D Clouds for mobile (coming soon with Ephemeris 1)

https://github.com/ConfettiFX/The-Forge https://github.com/ConfettiFX/Custom-Middleware/tree/master/Ephemeris