Correct PBR Values - Substance Designer

mobpapst

Hey there,

i got following question. is there a way to check out the values for the spec and gloss maps in substance designer to get correct pbr values that fit into a next gen engine like cry or ue4? in photoshop i used the mean to get proper results

SwdPwnzDggr

Check out the PBR Albedo Safe Color and PBR BaseColor/Metallic Validate nodes for checking your current maps.

For creating maps check out the PBR Base Material, PBR Dielectric F0, and PBR Metal REflectance nodes.

Jerc

The SD viewport is synced to UE4, so it should be pretty easy to get the right values for this engine.

gevarre

Okay, so if the viewport is synced to UE4, is there any way to sync it to Unity 5?

NicolasW

Few problems with unity 5:
- their is a major bug with the reflection probes: depending on their resolution, for the same "smoothness" value, the glossy reflections will look dramatically different -> we can't even try to sync to something that can give 6 different results depending on a parameter. Hopefully they'll fix that soon.
- for now they use a blinn-phong brdf, we use ggx (to sync to UE4). Both brdf are very different. I've heard they'll switch to ggx for highend platforms.

gevarre

So assuming starting with default settings in unity for the reflection probes and so on, and assuming pc platform for unity output, what would be a good starting workflow to at least get close?

I understand it'll never be perfect, but at least a baseline approximation would be good.