Layered Material compile error with parameter collection blend (x3004)

After updating from 4.11 to 4.12 my material doesn’t compile any more.
I’ve narrowed problem down to setup visible in attachment.
Everything works fine when alpha for blending is a constant scalar, but when I connect scalar from Parameter Collection then it doesn’t compile.
Also It works with PM unless I don’t connect anything to Specular, Roughness or Emissive.

Hi Gomo,

This was already reported with UE-31792 and has already been fixed internally for 4.13’s release.

Thank you!


Thanks, I found similar bug report just wasn’t sure it is the same thing.

I wasn’t either when I saw another similar, but not the same issue already reported and just tested it in both to be certain that it was actually resolved. :slight_smile: