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Old 01-28-2013, 12:47 AM   #1
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Creating realistic bathwater Vray adv + max2012

I googled my @$$ off, but I cant find a solution for this.

Im currently working with VRAY adv in max 2012 and im looking for a realistic way to create bathwater.

Left is my attempt, right is my goal.



As you can see, my water is too chaotic, it looks like a bubble bath.

I am using a plane with the current dimensions:


Applied a displacement modifier with a noisemap

displacement settings


noisemap settings


caustics settings:


If anyone has some advice, that would be greatly appreciated.
 
Old 01-28-2013, 12:50 AM   #2
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ah and the material settings:

 
Old 01-28-2013, 03:07 AM   #3
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First, you're rendering much closer to the water than your reference. Second, just a noise map in the displacement won't cut it. You'll probably need layers of noise (varying the scale) to achieve something more realistic. I'm planning on doing a tutorial regarding water in vray, but the time is not helping. One last hint - try a inverted cellular map.
 
Old 01-28-2013, 08:58 AM   #4
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Trying a render with a default cellular map right now and it is looking a little bit better. Gonna play some more with this tomorrow and post some updates to see if I can make it work. Thanks Davius

any other suggestions still welcome btw.
 
Old 01-29-2013, 07:13 AM   #5
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it is working great for now. But i noticed I have another problem.

If I render it without using a displacement map, it looks kinda dirty, not sure why.



The water is very noisy, perhaps if I clear that up first it will look much better. Any ideas what is causing the noise?

Btw is it recommended to use a Vray sun or does a Vraylight suffice?

Last edited by Papigiulio : 01-29-2013 at 07:15 AM. Reason: missed text
 
Old 01-29-2013, 10:01 AM   #6
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can u share ur file here ? maybe i can help u
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Old 01-31-2013, 12:18 AM   #7
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Old 01-31-2013, 04:32 AM   #8
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Well i think I find one of the reasons it didnt came out well.

I was using a standard Vray light and not a Vray sun.
 
Old 01-31-2013, 11:08 AM   #9
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Yeah, you also need to change a lot, Materials, geometry, displacement. I am doing a version I will email you a link to dl it.
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Old 01-31-2013, 02:32 PM   #10
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Check your E-mail.
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Old 01-31-2013, 10:01 PM   #11
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Done and done.


Uploaded with ImageShack.us
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Old 02-04-2013, 06:09 AM   #12
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Sorry for the late reply.

Dude, that looks FANtastic. Need to compare you settings and mine see where I went wrong.

Thank you so much

ill post a pic of the final render when finished ^^
 
Old 02-04-2013, 10:58 AM   #13
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Looks like it's all sorted now, but I thought I'd pipe (ahaw!) up and say that I think part of the problem may have been that you saw the reference and saw lots of contrast and so put lots of contrast into the surface of your object (via the displacement map). In reality, a lot of that contrast actually came from the caustic refra/lections in the water. This gets amplified with water depth (which is to say that a small bump in the surface will create a larger 'spread' of caustic highlight the further away the surface that it's hitting - in this case, the bottom of the bath - sits) so a lot of the contrast in the image can come from small alterations in the surface of the water - if you're rendering out tasty caustics.
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Old 02-04-2013, 12:26 PM   #14
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What I found was, that the water surface was not a closed object, but a plane. Its kind of impossible to get proper caustics/sss/refraction/fog in a plane. It can be simulated, but its very difficult. To get the correct type of sss you need a solid object. I also cheated a little to simulate the light scatter in the water by using a falloff controlled Lightmat to illuminate the sides of the water. I think I changed the gi to bruteforce, or should have , to cover animation. The AA should be set to DMC, with a 1:8 ratio. Dropped a omni with no shadow in, to simulated bounce light inside the room. The important aspects were the noise map for the disp mod to work off. For a realistic water motion/look you need to use turbulence broken up with something else. You can use cellular but it needs to be softened, which is why I would use noise, you ca blur noise.
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Old 02-06-2013, 11:21 PM   #15
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I think Fred Ruff has a blog post about how he did some bathwater for a commercial a while back.

http://www.ruffstuffcg.com/
 
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