Displacement problem - haven't seen before

[LarsSonparsson]

I created displacement demo project to test how far can we go with displacement only.
Scene has one geosphere, vray area light and dome light. Camera is positioned very close
to spheres surface.

Displacement is view dependent - 4 pixels.
Displacement map is a mix of many procedural noise maps.

What are these artifacts that are mostly visible in closer "mountains"?
It looks that width of those stripes is 4 pixel. It's just weird that they are
visible.





-LarsSon

[Morne]

could you circle the area you are talking about? Can't see anything strange here

[LarsSonparsson]

Is this better?

[Morne]

O yes, it looks like you scanned the image from a magazine at high dpi and it is picking up the texture of the page
I wouldn't know how to to get rid of it, but I'd probably start with tweaking the procedurals

[MathTheRender]

how about using the filter blur in vrayDisplacement Modifier?
doesn't that fix your issue?

[LarsSonparsson]

I think that the filter blur is for bitmaps only.

Well, I tested it and it didn't had any effect.

Thanks anyway!

[MathTheRender]

hmm, ok? but you get that dicplacement from a bitmap somwhere, right? as i remember my last dicplacement i made, i took the vraydispl.mod on the object and gave there the map and not in the material map section. and then the filter blur should work. otherwise i would be intrested in how you do the displacement, im sure there is a way i dont know yet

[LarsSonparsson]

Nope, I'm not using bitmaps. I'm using max procedural noise that is assigned to vray disp.modifier.
That way I should get "infinite" details, almost.

[MathTheRender]

ah, ok, now i see

but the noise in max has a blur to, and if the blur doesn't work there is an offset i would try.

that should help to smooth your pixel problem.

otherwise i run out of advicec

[LarsSonparsson]

Thanks for helping! ...but nothing works.

I have tried everything.
Adding blur, having no blur at all, without shadows, rescaling the scene...

Could it be, that the noise map in Max is running out of color levels? But noise maps are calculated in float values, right?

I won't give up! I'll find the way to fix it no matter what!

-LarsSon

[vlado]

This is a problem with the 3ds Max Noise texture on 64-bit systems, you will not be able to get rid of it (the reason is the smaller precision with which the 64-but version operates); it will render fine in 32-bit versions though. You can also try other noise textures (e.g. the Bercon maps).

Best regards,
Vlado

[LarsSonparsson]

Ah, okay now I understand.

Thank you!

No way of going to 32 bit version. Maybe I should try Bercon maps then.

-LarsSon

[MathTheRender]

thats good to know!

@LarsSonparsson: i'm sorry i coudn't be a bigger help

[ajroane]

I might be having the same problem, and I am using a bitmap (no procedural maps) for the displacement. The displace map was created from high-poly models in max using a Vray Zdepth render element. I have tried playing with the filtering in the bitmap and in the Modifier, and I have also adjusted the 2Dmapping resolution/precision values and nothing helps get rid of this noise. Has anyone had any experience solving this problem?


Thanks,

Andrew

[Dariusz Makowski (Dadal)]

I got that same issue with noise map. In my case its diffuse map, with very small size. On close ups render you can see those lines... ARGH ! Never had it b4 or I was blind back then ;s