Unity 5 Beta and PBR?

capone

Can anyone explain where Unity 5 is with PBR systems? Is it still being worked out or are there definite solutions? All I can find is this;

http://blogs.unity3d.com/2014/10/29/physically-based-shading-in-unity-5-a-primer/

I can't find much on it at youtube, which sucreated PBR with Unreal and Marmoset, both had differences. Any idea what Unity is closest to? I'm looking for Metal and Roughness slots in the material editor.

arvinmoses

I think Unity is using Spec/Gloss rather than Metal/Roughness

capone

Ah, confused. I thought the point of PBR was to finally take spec maps out of the equation?

rube

There are two different methods. Spec/gloss or metalness/roughness. This page from marmoset goes over both workflows http://www.marmoset.co/toolbag/learn/pbr-conversion

And you're probably not seeing much on youtube about it since it's still in beta.

[edited out some incorrect info]

stabbington

Unity 5 uses metal - the specular model is still there as an option and was really useful for getting the calibration right in the early betas but there was overwhelming demand for metal to be added, so we figured it made sense to make it the default.

The spec/smooth model is pretty in-line with Marmoset's model and the metal/smooth matches other implementations pretty closely now, so most of the existing resources for either (dontnod, etc) should work for you.

capone

I can't find any metal slots in the standard shader, am I missing something? Is it in another shader? One of the legacy shaders?

JedTheKrampus

If you have the latest beta there should be two versions of the standard shader. One is named "Standard", that's the one that has a metallic input. The other is named "Standard (Specular Setup)", and that's the one that has a specularity input. In both cases you'll need to put the smoothness map in the alpha of the metallic map or the specular map.

MichaelNeve

@Capone This might cover a few things that are confusing about the new PBR system. I have worked out this workflow and made a document of it to help others (This is not the only/best way to do it, just what works for me). http://www.flintlockstudios.co.uk/News/ID/47/PBR-and-Global-Illumination-Tutorial

StormyBA

There is very little explanation on the shader.

The Smoothness + Metal you put in one texture image but its not great. I think Green = Metal and Alpha = Smoothness - that texture is put into the metal slot - have a play around with images in different texture channels and figure out which is correct as i might be wrong.

They need some documentation