Can I use VRay materials in UE4?

Archive V-Ray for Unreal V-Ray for Unreal :: Issues
1

I usually import .vrscene models and VRay lights from 3ds Max into UE4 for VRay Light Bake, and then assign Unreal materials to the objects.

I wonder if I can do the materials (VRay) in 3ds Max as well, and then export the whole scene ready for light bake? Is that possible?

Does UE4 convert VRay materials to Unreal materials, so that the engine can process Base Color, Reflection, etc. for real-time navigation?

2

Hi, farzad_moshiri

I wonder if I can do the materials (VRay) in 3ds Max as well, and then export the whole scene ready for light bake? Is that possible?
Yes, you can create your scene in Max (geometry, lights and materials) and import it in UE with V-Ray. The V-Ray materials that get imported are material instances of V-Ray master materials which are UE native materials that best simulate V-Ray ones. Sometimes you can get a pink imported material: that means that the material or part of it is not currently supported(check the docs for supported features here: Impoting VRayScene). You will have to reassign those materials with new ones. You also need to have good unwrapped UVs for lightbake in Max so that when you import the scene you will have a proper light bake. If everything looks alright with your imported scene you just have to set all the V-Ray light “Set for Light Bake” option to ON and you are good to go :).

Best regards,
Alexander

3

Dear Aleksander,

what about the different BRDFs that Vray supports: Blinn, Phong, Ward, GGX? Are they converted differently?
I currently have a scanned material that uses GGX for the scan and thus the glossiness level is different from a model with Blinn/Phong or Ward.
The material appears not glossy enough in Unreal then. Only if I increase the glossiness, it looks right again.
Are there any plans to compensate for different BRDFs during import/conversion?

Cheers

Robert

4

Hi Robert, Currently we do not convert the different BRDFs differently and there is no plan to do so. I will add it in the To Do list and will inform you when we start development for that feature. Best regards. Alexander