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Underwater Scene
show user profile  owtdor
I have been running through a ton of tutorials on underwater scenes this morning and nothing really is giving me a great result. Anyone have any other sources I might not have seen yet?

I need to create an animation of an anchor "setting" itself in a sandy ocean bottom. It needs to be lit enough to show all the detail, but not so bright that it looks like it just a few feet from the surface. There does not need to be any caustics since it will bog down the render times and might throw off the views. (You never know if you are going to get an epileptic juror that goes into fits when you show caustics)
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read 1126 times
2/3/2012 7:54:38 PM (last edit: 2/3/2012 7:54:38 PM)
show user profile  Garp
There are no caustics anyway past a few meters. It's all scattered and averaged away.




read 1116 times
2/3/2012 8:07:34 PM (last edit: 2/3/2012 8:07:34 PM)
show user profile  IBENEZ21
I have had some success with using a gradient (black to blue-green) in the environment map for the background. Crude and predictable.
Photobucket

http://www.thunderhead3d.com

read 1107 times
2/3/2012 9:49:32 PM (last edit: 2/3/2012 9:49:32 PM)
show user profile  killerbee2
lots of "dust", volumetric lighting, lights coming from the camera and volumetric fog.




read 1088 times
2/4/2012 2:38:03 AM (last edit: 2/4/2012 2:38:03 AM)
show user profile  owtdor
Going to try building this again today. Any other suggestions?
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read 1056 times
2/7/2012 5:57:08 PM (last edit: 2/7/2012 5:57:08 PM)
show user profile  ScotlandDave
Quite a shallow depth fog plus all of the above..



Website | Blog | Contact | Vimeo

read 1045 times
2/7/2012 6:07:20 PM (last edit: 2/7/2012 6:07:36 PM)
show user profile  herfst1
I read a tutorial where the guy created a plane above the water and cut loads of random holes in it then projected a single light from above. Gave a really nice lighting effect. Something I've been meaning to try.
read 1031 times
2/7/2012 8:19:26 PM (last edit: 2/7/2012 8:19:26 PM)
show user profile  ScotlandDave
It`s amazing the things that are done so simply and so effectively within real time games that are a whole lot of arsing about with 3d apps..



Website | Blog | Contact | Vimeo

read 1030 times
2/7/2012 8:56:17 PM (last edit: 2/7/2012 8:56:17 PM)
show user profile  npcph
I have a book that is pretty old, but it has a tutorial on an underwater scene. It covers everything from creating the materials to doing the caustics for the water, creating plankton and bubbles. It is about 100 pages long, but i would be willing to scan it and email you a copy if you want.

it comes out pretty decent.


read 1018 times
2/8/2012 4:23:16 AM (last edit: 2/8/2012 4:23:16 AM)
show user profile  owtdor
Got it pretty well sorted, thanks for the post everyone.
I do have one more question though, is the "Fog" environment effect not compatible with Mental Ray? If not, how do you suggest I get a fog into Mental Ray?
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read 995 times
2/8/2012 5:20:08 PM (last edit: 2/8/2012 5:20:08 PM)
show user profile  Nik Clark
It is indeed not compatible!

I think the "Parti Volume" shader is the one you want.



read 986 times
2/8/2012 6:08:03 PM (last edit: 2/8/2012 6:08:03 PM)
show user profile  Vivifyer
I recently did some underwater work. Depends on your pipeline i guess, i used vray.

in environment effects i had VRayEnvironmentFog, you'll have to play a bit with the settings in there to get the look you;re after, in vrayenviornmentfog nodes, under lights, i had two lights, one of them a vray ambient which was pretty lower power and a dark blue, and i have a direct light over head casting an animated water caustics map downwards into the fog, giving pretty good light streaks.

might need a second direct light to cast shadows, all rendered without GI, but with the fog it will be pretty slow.

Vivifyer - Lastpixel

read 959 times
2/9/2012 11:09:52 AM (last edit: 2/9/2012 11:09:52 AM)
show user profile  owtdor
I don't currently have access to Vray, and even if I did, I have never used it. I love the results I have seen though.
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read 935 times
2/10/2012 4:40:31 AM (last edit: 2/10/2012 4:40:31 AM)
show user profile  owtdor
I got it figured out by following this tutorial and adjusting it to my needs. http://www.polygonblog.com/3d-underwater-scene/

I also found out that the lighting I originally put in the scene was messing things up.The first try was to implement the tutorial into my existing animation, but I ended up building the tutorial file and then imported my scene into it, minus the lighting. When the trial is over I will post up some renders.
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read 898 times
2/10/2012 6:12:11 PM (last edit: 2/10/2012 6:12:11 PM)
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