Painting material mask on object inside UE 4

RickiPicker

Is there possible to draw some kind of mask on mesh inside UE 4 for materials?

For example: I created material for floor. Now i would like to create another material with same texture but damaged and paint on my mesh where i feel it should be used.

Gilgamesh

Vertex colours is what you want, doesn't work on BSP only on the vertex of meshes and you will need to set up the materials for it.

Look at the content > reflections subway, the walls are done via vertex painting (to get the chipped look.

further info ...

https://docs.unrealengine.com/latest/INT/Engine/UI/LevelEditor/Modes/MeshPaintMode/VertexColor/index.html

mow

This Videotutorial from Pubgames should also demonstrate exactly what you're looking for:
http://youtu.be/P4kc-CMEfDg?t=1m30s