Velvet...Vlado?

[n6]

I have spent 3 days trying to reproduce a realistic velvet material.
I have try everything : very small displacement, glossy reflection, anisotropy etc.. and nothing can realy produce the same effect than real velvet.

I know the falloff map technic in the diffuse slot BUT this is not a physicaly correct way to go.

I have read that Final Render as a special shader for this kind of micro fibers material so I think I am right : this is impossible to reproduce a realistic velvet without the help of a renderer side peace of code.
am I right?

If not I would realy appriceate that Vlado gives us his theorical approch of this material. I mean the way to do it with the existing Vray material, displacement etc...

[Candelero]

Can you show some references.

Best regards,
nikki Candelero

[DanielBrew]

Hi n6,

Have you seen this thread?

http://www.chaosgroup.com/forum/phpB...570&highlight=

Dan

[n6]

ok. Here is what I m trying to reproduce :







And here is what I can get : as you can see the result is not very realistic for the velvet :

[priad]

masha are you there???

[Candelero]

I think you need a specular map with those flowers as well with lots of glossy effect.

Best regards,
nikki Candelero

[RErender]

I hope Masha is flying to Beverly Hills to get her chin done.

You might play with some fall off maps in the reflection and glossiness slots

[jujubee]

Try a Perpendicular/Parallel falloff map in Diffuse with the top color set to Blue and bottom set to a whitish color.

[n6]

Try a Perpendicular/Parallel falloff map in Diffuse with the top color set to Blue and bottom set to a whitish color.

did you read my first post?

[dellis]

Yeah...but most often in this business....if it looks right, it is right!!!

[Dynedain]

The material you are showing is not velvet. But falloff maps is the way to go here. Nothing we do is "physically accurate".

[n6]

The material you are showing is not velvet. But falloff maps is the way to go here. Nothing we do is "physically accurate".

I know... but putting a falloff map in the diffuse slot looks like tto me like using a texture to fake reflections.

[ene.xis]

so why dont u use glossy reflections?with a ward material?

[n6]

damn...
I have allready try it! But the result isnt here...
Even with different fallof map fresnel perpendicular/paralele, different IOR index : nothin gives a true and accurate velvet.

And if Final Render has a specific shader for "micro fibers", well there may be a good reason.

[jujubee]

If you think about velvet, it really is a glossy reflective material with many fine fibers. It would be equivalent to very fine hairs wihch is something you would not want to render due to time.

Only other solution I could think of is to play around with anistropy values while having a falloff in glossy reflections.