Started by blinkfrog, August 30, 2013, 01:10:19 am
QuoteWell, it is like I need to work more at the internal scattering. But may be the cloud just isn't designed well? May be it too dense?
Quote from: Matt on August 30, 2013, 08:50:04 amVery interesting blinkfrog! You clearly understand the problem.
Quote from: Matt on August 30, 2013, 08:50:04 amTo my eye, your view from above the clouds is doing a pretty good job, although it's not quite right yet. There are compromises and plenty of edge cases that just don't look right unless we literally brute-force sample every path. Or are you actually doing that?
Quote from: Matt on August 30, 2013, 08:50:04 amWhat sorts of rendering times are you getting?
Quote from: Matt on August 30, 2013, 08:50:04 amQuoteWell, it is like I need to work more at the internal scattering. But may be the cloud just isn't designed well? May be it too dense?It may be the scattering isn't right, or the cloud density isn't realistic, or both. But nature creates clouds with such incredible variety, and there are probably many different density profiles that all look "real". I would expect that we should have some freedom to create many different density models and still make them look realistic if the lighting simulation is good enough. So I think the scattering probably needs improvement. However, your first cloud image might look more convincing if the fractal did not have such sharp valleys. The unrealistic fractal might be distracting us from really being able to judge the realism of the scattering. It looks like it's generally doing the right thing, even if there's still something unnatural about the falloff and it's hard to pinpoint what it is.
Quote from: Matt on August 30, 2013, 08:50:04 amI'll be interested to see how this progresses
Quote from: cyphyr on August 30, 2013, 12:33:31 pmI'd love to know the render times (and your setup for comparison).How far developed is this project so far, do you have a GUI?If you need any testing, give me a shout
Quote from: pokoy on September 04, 2013, 03:11:57 pmBlinkfrog, these are some really cool examples, and I really like the sunset image.
QuoteIt's something I wondered before actually, how are atmospheric rendering apps rendering their atmospheres? Are they using simplified models or really calculating the effects based on scattering through different layers of dust, ozone etc.?
Quote Would it be also possible to simulate the bending of light paths based on different IORs of the different media in the atmosphere? So many questions here... :-)
QuoteThe clouds look mostly good when looked at as thumbnails but look too dense when looked at in original resolution. I'm not able to tell what it is, but it really may be a too much simplified scattering, though I'm not an expert really.
Quote from: Tangled-Universe on August 31, 2013, 03:50:02 amWell Blinkfrog,It seems you're applying for a position at Planetside A fresh look/ideas and extra manpower to bump up development speed couldn't hurt TG