Author Topic: Iray and Substance Painter guide  (Read 1815 times)


Hi there,
Here is a guide to render identical images with Iray (compare to Substance Painter) in Maya.
Unfortunately it's not as simple as it should, because of the limited Iray integration in Maya.
This is one solution, I tried to do this as simple as possible.


Substance Painter export settings:
- The PBR MetalRough is almost perfect. You just need to change the Normal map type to OpenGL.


Maya:
- Assign an ifmMDLMaterial to your geometry
- Change the type to physically_metallic_roughness
- Now you can connect the textures


Connections and additional nodes:
- Base Color: You can connect directly into Base Color/Diffuse
- Metallic: You have to use a Float Correction node with gamma 2.2 than connect to the Metallic slot.
- Normal: You have to create an ifmNormalMapping node, it automatically creates a Gamma node (with 2.2) as well. Connect the File node into the Gamma node, than the ifmNormalMapping node into the Normal slot.
- Roughness: You have to use a Float Correction node with gamma 2.2 than connect to the Roughness slot.

The Hypershade can't show the connections, don't panic. :)
The additional nodes are needed because Iray doesn't understand Maya's Color Management system. :(

Here are some images about this:





Last Edit: February 27, 2018, 12:45:08 am
I'm an Environment Artist and R&D Generalist at Digic Pictures

I was a bit tired, so I forgot we have of course Substance Designer. :)
I will create a new MDL with Substance Designer where you don't have to add any nodes to work correctly.
Last Edit: March 03, 2018, 09:47:27 am
I'm an Environment Artist and R&D Generalist at Digic Pictures