Wrapper material is not working in GPU rendering

[javierrentas]

As the title says, I could not get the wrapper material to work with GPU. It was working fine in V-Ray 5
Is there a new workflow I'm missing for Shadow catcher in GPU?

Using V-Ray 6 current released version

[Peter.Chaushev]

Good catch!
We have identified the issue. It affects only newly-created Wrapper materials. Will have it fixed in time for the upcoming hotfix.
In the meantime, you can solve the issue on your side using either of the following workarounds:

• Workaround A:
  Type in _-EditPythonScript in your Rhino command line and then run the following script:
  

  import rhVRay as vray
  	
  	with vray.Scene.Transaction():
  	Matte_mtl = vray.Scene.Plugin("/Wrapper_v6")
  	Matte_mtl.alpha_contribution_tex = -1

  Substitute Wrapper_v6 with the name of your actual Wrapper material and don't forget to add an "/" in front of it as shown in the example.
• Workaround B:
  Use a Wrapper material created in V-Ray 5. This can be done by opening the V-Ray Asset Editor and load a V-Ray 5 Wrapper vrmat file (the 'Import Asset File' located at the footer of the Asset Editor).
  If you have the V-Ray 5 Material Library still existing on your system, simply navigate and load the following file:
  %UserProfile%\Documents\V-Ray Material Library\AEC\materials\v5.0\Materials\Diagrammatic\ Matte Shadow Receiver.vrmat
  Alternatively, download and load it from here: Matte Shadow Receiver.zip

Again, thank you for alerting us of this issue!

Kind regards,
Peter

[javierrentas]

Thank you Peter! I thought I was crazy, I spent a good amount of time trying to make it work.