vray underwater scene

[BBHead]

Hi Guys,

I have had a look through the forum but couldn't really find what I'm looking for. Can anyone point me towards a good tutorial/guide for an underwater scene with vray?

Kind Regards

Michael

[andybot_cg]

I recall this thread:
http://forums.chaosgroup.com/showthr...ater-rendering

[BBHead]

Cheers! I'll have a gander.

MIchael

[BBHead]

Hi,

SO I went and had a look at thread you suggested and found it to be very helpful. I did however come across a problem that I am hoping someone can help me with.

SO the main beauty render is fine but my zdepth and AO passes don't match up with render. I believe the problem is being caused by the fact I had to hide the geosphere that's around the camera to get the AO and Z-depth passes to give a result. Which means I am not getting the same refraction I get with the beauty render. Is there a work around for this so I can get them to match up?

Michael

[vlado]

You could set the "Affect channels" option for refractions to "All channels" in the material for the sphere.

Best regards,
Vlado

[BBHead]

Thanks Vlado! That fixed the issue.
I am however getting very noisy AO renders. Could this setting be causing this?
I have attached what I have so far. The background is also very noisy. Is there any way I can exclude seafloor from reflections in ocean surface maybe. That seems to be causing the noise. I know maya has an VrayObjectProperties node but does max?



Michael

[BBHead]

Hi,

Well on the AO front I rather stupidly forgot about AO subdivs. So that at least is better now.

M

[vlado]

I know maya has an VrayObjectProperties node but does max?

Select an object, right-click and select "V-Ray object properties"?

Best regards,
Vlado

[BBHead]

Hi Valdo,

I didn't have that option loaded in my Quad preferences. I have loaded up now. Thanks again!

Michael

[jenya.andersson]

Just one thing to keep in mind. Any underwater imagery there is hardly any spec because light is polarized underwater and kills off any spec/ sheen on surface of materials.