Join the discussion
Write your take first — we'll ask for email only when you're ready to publish.
- Hacker News
- I wonder how this relates to the Perez All-Weather and Preetham sky models. Not an expert about that but I managed to implement those in the past and it was quite a fun project!
- Scattering has long been key to making realistic looking rendered images. One of my favorite papers: http://www.graphics.stanford.edu/papers/bssrdf/bssrdf.pdf which I think is the first time I learned that rendering milk is a tricky problem.by dekhn
- Love a good graphics writeup - I've been working on similar things for my procedural space/planet generator. The cool thing with atmospheric scattering is you can combine it with volumetric cloud rendering and get amazing sunsets & sky scenes
https://www.threads.com/@mrsharpoblunto/post/DVS4wfYiG8f?xmt... https://www.threads.com/@mrsharpoblunto/post/C6Vc-S1O9mX?xmt... https://www.threads.com/@mrsharpoblunto/post/C6apksDRa8q?xmt...
- SpaceEngine is also known for putting quite some effort into this; highly recommended: https://www.youtube.com/watch?v=_4TjdVAbXksby dinfinity
- This is absolutely fantastic.
I've thought before about trying to render skies on the web as a series of gradients overlaid on top of one another. I expect I could have had some level of success and gotten some mediocre results, but it would be nothing compared to what you've created.
Thank you so much for sharing this; it's inspirational, must have taken you a very long time to put together, and I'm blown away by your results.
by baliex - Incredible what mobile phones and browsers can do nowadays. I remember implementing this paper from 1993 (the absolutely OG for this topic and very readable): “Display of The Earth Taking into Account Atmospheric Scattering” by Nishita et al: https://www.researchgate.net/publication/2933032_Display_of_...by rollulus
- I'm not sure if it was a deliberate omission or not, but it's worth pointing out in the Sunset model that the sky should not go black as soon as the Sun goes below the horizon as it does in the demo. The Sun will still be shining on the atmosphere above you, and in areas above your horizon for a considerable time after Sunset. There will still be a noticeable twilight (in Earth's atmosphere) until the Sun is 18 degrees below the horizon. It's probably not practical to implement using ray tracing, but there are common algorithms to model it.
- I saw this a while ago so it might not be totally related, but Sebastian Lague did a video on atmospheres for his planet generation experiment which was also very entertaining to watch [1].
There's something particularly entertaining on developing visuals and watching them come a reality — I hope at some point be able to experiment in this field.
by etra0