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General => Image Sharing => Topic started by: Dune on June 19, 2014, 02:33:22 AM

Title: Iceberg
Post by: Dune on June 19, 2014, 02:33:22 AM
Trying my hand at ice. But it's not what I'm after yet.
Title: Re: Iceberg
Post by: archonforest on June 19, 2014, 03:09:54 AM
nevertheless it looks promising ;)
I love the foreground a lot!
Title: Re: Iceberg
Post by: freelancah on June 19, 2014, 04:44:40 AM
Nice. Definitely heading for the right direction :)
Title: Re: Iceberg
Post by: fleetwood on June 19, 2014, 06:41:25 AM
The big one makes me think of the "tip of the iceberg", 9/10 under water idea. But those shore line slopes give me the impression of shallow water that couldn't contain the big 9/10 part of the berg. Of course there could be a surprisingly deep water channel there despite the gentle shore.
Title: Re: Iceberg
Post by: reck on June 19, 2014, 07:36:48 AM
Needs SSS  :D
Title: Re: Iceberg
Post by: Dune on June 19, 2014, 10:57:35 AM
I know fleetwood, but this was more to test ice. I always shove in stuff that's not really needed  ;)
Title: Re: Iceberg
Post by: choronr on June 19, 2014, 11:08:02 AM
The displacements, color and translucency are spot on. Those birds passing by gives one the true sense of scale.
Title: Re: Iceberg
Post by: kaedorg on June 19, 2014, 11:24:29 AM
Very promising. Did you try some reflective effect ?

David
Title: Re: Iceberg
Post by: zaxxon on June 19, 2014, 12:44:42 PM
Chilling! I'm still amazed that TG can be tweaked to accomplish these effects without SSS. Excellent!
Title: Re: Iceberg
Post by: Dune on June 20, 2014, 02:54:35 AM
I should indeed add some reflection, and more internal glow. The latter can be done by using a surface shader with luminosity of a darkish blue color, no breakup, and a soft PF for variation. That works for the cracks as well (the 'dark luminosity'), though I have to refine the effect. It's quite fiddly to get the exact lightness.
Title: Re: Iceberg
Post by: kalwalt on June 20, 2014, 03:15:28 AM
I can't wait to see this finished, Ulco! :)
Title: Re: Iceberg
Post by: mhaze on June 20, 2014, 04:21:09 AM
Clever work.  love the blue cracks! Off topic but I'm curious - why are your rocks always brown?
Title: Re: Iceberg
Post by: Hannes on June 20, 2014, 05:41:46 AM
Great Ulco. I guess indeed a reflection shader will add a lot here.
Title: Re: Iceberg
Post by: masonspappy on June 20, 2014, 11:51:27 AM
Of course, there should be penguins...  ;)
Title: Re: Iceberg
Post by: archonforest on June 20, 2014, 12:40:05 PM
and a polar bear passing by?
Title: Re: Iceberg
Post by: Hannes on June 20, 2014, 01:23:53 PM
I don't believe it, Ulco!!!!!  ;D ;D ;D ;D ;D
Title: Re: Iceberg
Post by: Dune on June 21, 2014, 02:59:19 AM
I tried something else, so here's the clue for this one; first give the ice a blue glow, then add cracks and another surface shader inversely masked by the cracks with a white and slightly luminous color. So the outer ice will be whitish, but the cracks remain bluish and luminous. Still have to fiddle to get the exact amounts, but we're used to that.
Now I have to find the perfect cracks, which is hard as well. Tried a x to scalar + sinus for some vertical cracks, but they're too even, even when masked by PF. Warped voronoi is nice, but the horizontal parts are not really needed. Ridged PF? Mmmm. I was just thinking of a combination of voronoi, warped by squarish blocks for some nice effect... have to experiment again.
Title: Re: Iceberg
Post by: Hannes on June 21, 2014, 03:27:10 AM
This looks already quite good. Maybe the iceberg is a bit too much displaced? A bit too crumpled?
The cracks look really convincing!
Title: Re: Iceberg
Post by: bla bla 2 on June 21, 2014, 04:21:53 AM
Cool. :)
Title: Re: Iceberg
Post by: mhaze on June 21, 2014, 05:51:59 AM
The last one really glows like ice - brilliant work.
Title: Re: Iceberg
Post by: Dune on June 21, 2014, 09:21:42 AM
Yeah, the berg sucks. Got a better one here, but still a better scene is rendering now, better terrain and clouds added. Masked the last whitish glowing layer by a fractal so that here and there the bluish light stays visible.
And thanks for pointing me to my brown rocks; it just slipped into it. I have to work on different rock types and not throw in some brownish hues just like that.
Title: Re: Iceberg
Post by: choronr on June 21, 2014, 12:18:59 PM
Both looking good, especially the last one. I'm wondering how the glow is effected as the sun elevation is lowered. Would you have to make adjustments to the glow?
Title: Re: Iceberg
Post by: Dune on June 22, 2014, 02:58:22 AM
Yes, the problem is that shadows aren't as deep anymore with a glowing surface. Maybe a low glow will help.
Title: Re: Iceberg
Post by: mhaze on June 22, 2014, 04:57:21 AM
The last one makes me shiver! Great work. BTW how are you constraining the foam to the peaks of the waves?
Title: Re: Iceberg
Post by: choronr on June 22, 2014, 10:54:57 AM
Agree, the second image is good. It seems that most times, changing the sun's position requires certain setting adjustments to the nodes.
Title: Re: Iceberg
Post by: Dune on June 23, 2014, 02:42:37 AM
Foam restrict is by min altitude, very simple. Final altitude and use Y, then take the average water height and a meter of fuzzy, depending on the wave height. You can use favor rises as well. And the windswept foam stripes are restricted by stretched and rotated PF, but they're not too visible.
Here's another iteration, with some stuff to get the size of the monster. The problem (black edges here and there) with the water/icesheet I still have to face. Probably the horizon shift of the water shader. No polar bear, I leave that to someone else on this forum  ;)
 
Title: Re: Iceberg
Post by: choronr on June 23, 2014, 02:56:42 AM
It appears there is some action here with a sectional collapse of the berg; very nice.
Title: Re: Iceberg
Post by: Hannes on June 23, 2014, 03:06:24 AM
 ;D ;D ;D
That looks fantastic, Ulco! Great sense of scale. I'd rather not be in the pilot's seat!
Title: Re: Iceberg
Post by: yossam on June 23, 2014, 03:49:02 AM
Great pic..................... ;D
Title: Re: Iceberg
Post by: oldm4n on June 23, 2014, 04:18:39 AM
Mayday, mayday ...
Very nice image, I love the blueish cracks
Title: Re: Iceberg
Post by: mhaze on June 23, 2014, 08:31:25 AM
Thanks for the info Dune - not in a position to experiment at the moment but it will come in useful.
Title: Re: Iceberg
Post by: j meyer on June 23, 2014, 10:45:55 AM
Did you alter the colors of the iceberg between v7 and v2-3?
If so,v7 was better imho,especially in the shadows.
Title: Re: Iceberg
Post by: Dune on June 23, 2014, 01:25:30 PM
I changed a lot of small things, so I have to check that. Thanks.
Title: Re: Iceberg
Post by: freelancah on June 25, 2014, 10:30:34 AM
Awesome. The objects really give it nice scale!  ;)
Title: Re: Iceberg
Post by: zaxxon on June 25, 2014, 11:50:04 AM
This last image evokes the possibility of so many story lines. Outside of the obvious technical brilliance, it really is a fascinating image to view and re-view.
Title: Re: Iceberg
Post by: Tangled-Universe on June 25, 2014, 02:35:42 PM
Those last ones are pretty cool Ulco! I think with a bit of tweaking and more convincing iceberg shapes you will have it nailed.
Title: Re: Iceberg
Post by: Dune on June 28, 2014, 12:12:49 PM
Done some (a lot, actually) more work on the berg (cube) and sheet (lake). Planet itself was not rendered.
Title: Re: Iceberg
Post by: choronr on June 28, 2014, 12:25:03 PM
Beautiful definition and detail including the water and sky; mighty nice Ulco.
Title: Re: Iceberg
Post by: zaxxon on June 28, 2014, 01:25:49 PM
Superb!
Title: Re: Iceberg
Post by: kalwalt on June 28, 2014, 01:57:48 PM
Where is the Titanic ?!? just kidding... ;) ;) looks great!
Title: Re: Iceberg
Post by: bla bla 2 on June 28, 2014, 02:09:55 PM
O_O
Title: Re: Iceberg
Post by: R0t0rh34d on June 28, 2014, 08:55:38 PM
Wow, that's a really cool render and a great idea.  The ice looking amazing, now where'd that Titanic go?  I have so much to learn about TG3.  Would love to hear how you made that.
Title: Re: Iceberg
Post by: Dune on June 29, 2014, 03:02:50 AM
If you just started TG, it might be a bit beyond you, not meant diminishingly! But you could start some experiment. The basic principle is a lake with an added surface layer between water shader and lake itself. You can mask that surface layer by a (billow) power fractal with quite strong contrast and larger sizes (40/100/5), the noise variation at say 2, and the lower 2 values also at 1 or 2. Color contrast at 1. Then set smooth surface in the surface shader, set color to white, and set the displacement offset to 1. Now you have white flat ice sheets that rise out of the water.
You can add to that with colors, extra displacement power fractals, lambert shaders for (partial) translucency, reflectivity, color the underwater area for underwater ice by a derivative of the masking power fractal, etc, etc.
The iceberg is a rounded cube with a lot of shaders to color, displace and crack it.
Title: Re: Iceberg
Post by: Dune on June 30, 2014, 03:25:34 AM
A few more renders, with some different settings. Now up to something else again....
Title: Re: Iceberg
Post by: masonspappy on June 30, 2014, 07:12:06 AM
All done well - I'm partial to # 3. I think it's the ice floating on the water that does it for me.
Title: Re: Iceberg
Post by: kalwalt on June 30, 2014, 08:22:01 AM
i did a little test following your instructions in the 42 reply, i did not appllyed translucency or extra shader displacement or an extra shader color. Also not understood if you mean a perlin billow or a voronoi billow for the mask ? (power fractal shader)... but  does i am on the right path?
Title: Re: Iceberg
Post by: Dune on June 30, 2014, 11:12:29 AM
You are, and you can use billow or voronoi, or even perlin, as long as it's very hard.
Title: Re: Iceberg
Post by: j meyer on June 30, 2014, 11:21:40 AM
The texture of the berg in v2 is really magnificent,looks
almost hand drawn.Cool!
Title: Re: Iceberg
Post by: Hannes on June 30, 2014, 11:27:50 AM
Looks fantastic, Ulco!!
Title: Re: Iceberg
Post by: choronr on June 30, 2014, 12:18:38 PM
I like them all. A good accomplishment you have made here.
Title: Re: Iceberg
Post by: Kadri on June 30, 2014, 01:23:49 PM
Nice renders Ulco. I prefer your last one.