need some help creating a material

[sublevel4]

I have attached an image of what i am trying to acheive. I have tried and not really gotten the glitter gradiant effect that i would like. about the closest i have gotten is a speckle in the diffuse and reflect slots of a material in the base of a shellac that has a gradiant ramp. That material is in a shellac with a glossy vray map. This combo doesn't give me the end result that i am looking for. Can anyone tell me how i should go about this?

[tricky]

A bit of a bodge, but how about using only a few samples in your glossy settings? For example, normaly to get a nice smooth stainless steel, you wouldup the glossy samples to 20 or 30. What about leaving them at 8, or even 6?

Probably a daft idea.

[maxer]

u could check this site.
i think u find what u are searching for
http://www.vray-materials.de/

[sublevel4]

I have checked that site and tried to modify several of the metallic paints to meet my needs. I have the same issue with them its getting the metallic flakes to have an iridescent effect with the rainbow effect around the highlight and moving out. also the ones i have tried when i do a high resolution render the flakes go away

I will look again

[beestee]

I might be able to get you part of the way there...



Done with a simple gradient ramp with gradient type set to normal...



Fully adjustable and it doesn't matter what angles you will be viewing it from...



Application will depend on the route you take to get the fleck. I would probably do it in a VRayBlendMtl myself, then you have much simpler control over the contribution of the various effects.

Anyway, hope that helps

P.S. You can make the gradient ramp light dependant as well.

[andrewjohn81]

We have to create fleck material all the time. The problem with just adjusting the samples really low is that if you need multiple resolutions of the image the fleck size seems to change.

Also, that doesn't really animate well. Fleck should actually flicker some, but not in every frame.

Really what you'd want is a normal map of the actual fleck so that the fleck would reflect different parts of the scene depending on camera angle. I saw an attempt at that on the site listed above, but it didn't work amazingly well. I haven't had a chance to try it myself at work, and at home I only have a single processor (stupid laptop) without hyperthreading even.

If you only need one resolution and don't need to insinuate varying shapes for the fleck reducing the samples is definitely the preferred method, and is actually pretty damn fast.

[beestee]

Put together a quick clip of the GradientRamp in action -