Custom Primitive Data in UE4 Materials

Development Asset Creation
1
  • Explains the Custom Primitive Data feature added in 4.23
  • Demonstrates Custom Primitive Data materials
  • Compares draw call impact to dynamic material instances.
2

Thanks - very useful. Have you determined how to make this work when dealing with an actor that has more than one material element on it. As far as I can see the CPD parameter applies at the actor level not at the mesh element level.

3

Indeed very useful, wish I’d known about it sooner. Thank you for putting together the video as well

4

SetCustomPrimitiveData actually applies to the primitives, (UPrimitiveComponent) not actors (AActor).

If you have a primitive with more than one material, they should all be able to access the same set of custom primitive data (though I have not tried this myself).

If you need custom per-material data, you should use dynamic material instances instead.