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General => Image Sharing => Topic started by: Dune on May 05, 2014, 03:13:32 AM

Title: Ice
Post by: Dune on May 05, 2014, 03:13:32 AM
I happened to find an extremely nice image on the internet (CGI, but not TG I'm sure), and am trying to 'copy' it as a challenge. First render here, but it's bloody hard to get the ice and snow right.
Title: Re: Ice
Post by: N-drju on May 05, 2014, 04:14:13 AM
That plane would never ever hold on such a thin ice... :)

Actually this lumpy ice looks good to me. Perhaps it should be more reflective though?
Title: Re: Ice
Post by: oldm4n on May 05, 2014, 04:28:17 AM
that's pretty cool, some nice color variations on ice.

how long to render this image ?
Title: Re: Ice
Post by: mhaze on May 05, 2014, 05:18:51 AM
Very, very close, perhaps a little too blue but an excellent effort
Title: Re: Ice
Post by: Walli on May 05, 2014, 06:21:27 AM
I think with some post work to mimic other effects (bloom, softness) of the original...could be close ;-)
Title: Re: Ice
Post by: ra on May 05, 2014, 07:04:34 AM
Very good work!
Title: Re: Ice
Post by: Dune on May 05, 2014, 08:17:49 AM
@N-drju: That's their problem  ;D

Took 1.2 hours. Another render, still not satisfied. I will take some blueness out indeed.
Title: Re: Ice
Post by: N-drju on May 05, 2014, 09:08:01 AM
I didn't mind the blueness at all! It was alright!

I know I'm being a jerk right now but still... emm... where's the runway? Is this thing a VTOL? ;D
Title: Re: Ice
Post by: Kadri on May 05, 2014, 10:51:22 AM
Your images are very nice Ulco.

The original looks like it is a mattepainting.
I couldn't find much more about it. How much real elements are in it etc.

http://mattepainting.org/gallery/main.php?g2_itemId=9398
Title: Re: Ice
Post by: Dune on May 05, 2014, 12:09:25 PM
Matte painting... mmm, you may very well be right. Still, it's a nice challenge, even more so maybe. Matte painting is 'easier'  :P
Runway... it was there allright, but summer closed in and it has been overrun by ice debris and underrun by melting sheet. So Daniel (yes, it's him again) is standing a bit forlorn near his barrels of fuel... what to do? 
Title: Re: Ice
Post by: j meyer on May 05, 2014, 12:47:22 PM
If you like this image you should definitely take a look at the
other matte paintings of Lubos De Gerardo,very inspiring stuff.
Cool attempt btw.
Title: Re: Ice
Post by: TheBadger on May 05, 2014, 03:10:18 PM
Hello Ulco, I think I may have a useful suggestion for this image

Do you remember this thread?:http://www.planetside.co.uk/forums/index.php/topic,15056.0.html
And http://vimeo.com/49082546

I promise you that with some carful playing with the settings, you CAN fake SSS for your ice!
Try it. The real trick will be to copy every node and make a planet copy, then get the new planet sized smaller by just a hair... or two.
And then of course get the opacity/luminosity levels ballenced right. Then if you animate the camera, you can also animate one of the luminance levels of one of the planets and get a nice effect.

It works.
Title: Re: Ice
Post by: Dune on May 06, 2014, 03:06:19 AM
I'll have a look at his work, thanks.

I remember that, but never dived into it. But opacity can't be balanced subtly, it's on or off (unless using a water shader, and I won't go for that). Luminosity can, but I already used that in the ice, with a separate PF for noise. If I'd animate the luminosity, you'd get the SSS effect visualized allright. But it's still all on one surface of a hair's thickness so to speak. So in stills, of no use.
Or am I getting you wrongly?
Title: Re: Ice
Post by: N-drju on May 06, 2014, 09:01:23 AM
Shouldn't you be saving the guy instead of just bragging on? How about an icebreaker? :P
Title: Re: Ice
Post by: TheBadger on May 06, 2014, 07:08:08 PM
Ulco, definitely works with animation. I think you got me just fine.
But I think it will work. No one thought that the ball in the video would work, but it did. and this will too. But like the ball, I needed dandelO to help me get it to function right. So I can't tell you how to make the ice work. I just can see that it would.... Probably... Maybe.  ;D

I Like the first and last of the three so far.
Title: Re: Ice
Post by: Dune on May 07, 2014, 02:49:40 AM
Yes, with animation it would look as if something is moving in the ice/snow, but I doubt if that's the effect I want. Still, you won't see it in stills, I think, it's just another hue across the other hues on the surface. There is no depth in TG, even not in water, that's just calculated from the surface colors with a refraction angle where the water is a certain distance above terrain (that's my idea anyway).
Here's another iteration, slowly getting fed up with it again, so I might consider something else again to sharpen my knives on. The position of the planes wings and the watery meltholes are bit badly mixed, so I might fix that as a last one.
Title: Re: Ice
Post by: yossam on May 07, 2014, 02:55:26 AM
Looks damn good to me. The clouds are a little noisy (unless that is what you were trying to do). IMO.  ;)
Title: Re: Ice
Post by: Dune on May 07, 2014, 02:58:50 AM
Yes, the clouds are not deferred for speed of rendering. I might have to change that.
Title: Re: Ice
Post by: mhaze on May 07, 2014, 04:59:25 AM
Very impressive.
Title: Re: Ice
Post by: Hannes on May 07, 2014, 05:58:21 AM
Very very close, Ulco. It's really a pity that there is no subsurface scattering in TG (yet!!).