OTOY Forums

Why the material editor have no typical parameters for the physical correct renderings, such as NK, K, Abbe, IOR, Reflectance? Why it is impossible to specify the brightness of the light source in watts, lux ... And why can not specify a color in the wavelength?

because octane is young and we haven't yet added them.

you can specify spectra with the 'gaussianspectrum' node.

Radiance

so you render now is not physically correct?

Yes it is, it's a spectral renderer, just like maxwell, fry, indigo etc, and you can use gaussian spectra or spectrum data.
We just haven't added nodes for using n/k data etc, these are being implemented.

blackbody spectra exist, but no node to use them is in the UI yet,
these features are all planned for beta3.

Radiance

Hi,

I'm looking for a program in the web for to make by a texture all the other parameters like normal, displacement and specular for a better render. In the future I will able to put these parameters in Octane?

Thanks


p.s. IOR parameters are very important for my photorealistic renders and I don't see the time to use Rhino with beta3 and fixed bugs

Garcia wrote:Hi,

I'm looking for a program in the web for to make by a texture all the other parameters like normal, displacement and specular for a better render. In the future I will able to put these parameters in Octane?

Thanks


p.s. IOR parameters are very important for my photorealistic renders and I don't see the time to use Rhino with beta3 and fixed bugs

Octane already supports texturing of normals maps and specular maps.
We're adding an IOR specular node in 2.3. it's just a different way of working...

Radiance

Thanks for the reply!

radiance wrote:Yes it is, it's a spectral renderer, just like maxwell, fry, indigo etc, and you can use gaussian spectra or spectrum data.
We just haven't added nodes for using n/k data etc, these are being implemented.

blackbody spectra exist, but no node to use them is in the UI yet,
these features are all planned for beta3.

Radiance

Ok, and other question. Arion render dont calculate caustic. Can Octane do this?

buda wrote:

radiance wrote:Yes it is, it's a spectral renderer, just like maxwell, fry, indigo etc, and you can use gaussian spectra or spectrum data.
We just haven't added nodes for using n/k data etc, these are being implemented.

blackbody spectra exist, but no node to use them is in the UI yet,
these features are all planned for beta3.

Radiance

Ok, and other question. Arion render dont calculate caustic. Can Octane do this?

Yes, octane uses unbiased path tracing, so it does calculate caustics.
However since it does'nt have MLT yet, it's not always very efficient at rendering them yet,
especially if they are complex.

MLT will be introduced in the next update after the one coming in a few days, beta 2.3

Radiance

radiance wrote:Octane already supports texturing of normals maps

Hi Radiance!

You said Octane does support normal maps, but it's very strange - I use version 2.2b and normal displacement doesn't work - without playing on words, is this "normal" ?

Thanks !