OTOY Forums

Hi all,

I am a new user of octane but previously used corona and Maxwell.
I am trying to create a brushed metal effect, both linear and radial.
I was very disappointed to see the lack of anisostropy... I have read other posts on this forum about anisotropy and people haves uggested instead using very high res texture maps.
I have a series of ultra high res brush and radial textures (24,000 x 24,000 px), but having tried these in octane this is where I meet problem number 2!
I can't find anywhere to change the bitmap interpolation, the brush textures look like they have been laminated when rendered in octane! in 3dsmax, the bitmaps have a blur option to edit the filtering, this is necessary to create the crisp textures needed for a proper anisotropic effect.
Please someone tell me there is an option for this or a workaround!
Thanks

have you tried the .orbx import option in max? there was a thread with an example

use texture noise

Thanks whersmy, what would I import using .orbx?
Thanks Goldisart. I agree that an anisotropic effect is possible using this technique but the interpolation smooths out the texture too much.
You have to crank the bump up way too much and even then it the texture looks coarse and like it has a glossy coating.
I made a rough comparison in corona between 3dsmax bitmap default blur, and at it's lowest setting (like nearest neighbor interpolation).
I didn't bother fixing the dodgy texture tiling but you get the idea...
Default (like in octane):

With minimal interpolation:

For reference this is what machined steel looks like:

I tried using a noise and tubulence stretched way out but the same problem is present.
I was going to try triangle map but it doesn't seem to be available for 3dsmax plugin.
Cheers

Ok I managed to create a good brushed / machined material now.
For anyone else finding the same problem, use a normal map! The difference between bump and normal maps in octane is much greater than in other software for this micro geometry.
Thanks for the suggestions.
Whersmy, I'm still curious about what you meant by importing .orbx file.