Search found 25 matches

by snwy_
Mon May 25, 2015 6:01 pm
Forum: Visuals
Topic: Glitch Pictures anyone?
Replies: 75
Views: 79248

Re: Glitch Pictures anyone?

Some old glitches from the archives.

Image

Image

The first was a bvh issue, I recall; the second had to do with subsurface scattering making creepy lighting (and some nan pixels).
by snwy_
Fri Mar 06, 2015 2:54 pm
Forum: Tools, Demos & Sources
Topic: LuxMark v3.0
Replies: 4
Views: 4404

Re: LuxMark v3.0

Freezes and eventually crashes compiling kernels on scenes other than the simple one. This on linux with hd 5770 using whichever is the current fglrx for mint 17. CPU-side, the kernels compile.
by snwy_
Tue Nov 04, 2014 4:17 am
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

Some more silent tutorials up: Ifu Silent Basics - Creating a Pileus Cloud - YouTube Ifu Silent Basics - Simulator Settings - YouTube Ifu Silent Basics - The 'Cloud Blur' Option - YouTube Roughly in order of involvement, the first video being about simulating a specific cloud phenomenon, the last on...
by snwy_
Sun Nov 02, 2014 9:17 pm
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

Thanks, appreciated. I've twice noticed in this thread people referring to Ifu as a demo of sorts; I wonder the cause? Personally, I see it as a 'tool', having been more of a concept and then a demo two years ago. Granted, the target audience is more along the lines of cloud enthusiasts than, say, p...
by snwy_
Fri Oct 31, 2014 5:05 pm
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

Couple short video tutorials up:
Ifu Silent Basics - Render Setup - YouTube
Ifu Silent Basics - Atmospheric Settings - YouTube

Bring your own soundtrack, etc.

More tutorials may or may not go up on the playlist later.
by snwy_
Mon Oct 27, 2014 1:10 pm
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

The beta 2 version of Ifu is out. Comes with a bunch of changes, improvements, and new features (support for wind, variable terrain, HDR environment maps...). Work in progress, etc. Get it here: http://personal.inet.fi/muoti/eimuoti/ifu/ (Linux/Windows 64-bit) See the changelog and release notes: ht...
by snwy_
Wed Oct 22, 2014 5:59 pm
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

I'd guess the reason the mixing phase makes more satisfying clouds is that the heat multiplier is larger for that phase. See Settings -> Simulator and the last two options there. You can increase the multiplier for stronger cloud formation, etc. Changes to the mixing process were made for beta 2, an...
by snwy_
Wed Oct 22, 2014 12:19 pm
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

Looks more like clouds now, though I'd still say you're being shy with the forward scattering. What I've tended to notice looking at photos of cumulus clouds is that even though they look solid when far away, they get misty when you move closer. I've two observations of the data from Ifu. First, sin...
by snwy_
Tue Oct 21, 2014 12:24 pm
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

Clouds aren't much of a medium, though - quite possible for a ray to pass 'through' without hitting anything.

Rays in Ifu have a maximum depth of about 10000, but while inside a cloud mesh, they'll keep going until they find a way out.
by snwy_
Tue Oct 21, 2014 1:27 am
Forum: Tools, Demos & Sources
Topic: Ifu - cloud simulator and renderer
Replies: 22
Views: 19812

Re: Ifu - cloud simulator and renderer

If real clouds scatter mostly forward but renderings of this don't come out right, it may not be the real-world physics that need redefining, for sure. But on the other hand, whatever makes the rendering look right. With clouds, though, a good phase function won't help if the droplets aren't arrange...

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