Hey ,
I modified the MatLayerBlend_Standard to also pass the pixel depth so I could make two material functions…one with rock and one with soil/earth, both using parallax occlusion for a Landscape Material. Without pixel depth…its not really usable since everything appears to be floating.
So when I just use that and choose material attribute only input in the material, pixel depth should get past, but its not visible. When I however switch back to standard material pin mode and break after the material layer blend to connect pixel depth, I get a crash that says:
"Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp] [Line: 2171]
We should never need the IO index of the MaterialAttriubtes property.
"
So material function blending is not possible right now. When I connect just one of the functions output of pixel depth manually, it works just fine.
Is something you guys are aware of? (btw…I am using 4.8.3)
Besides that, great work on the node! Loving it so far 
Cheers!