Help plz: Imported Blender obj can not be edited with Polybrushs Vertex Paint

Unity Engine
1

Hi,

i have a huge problem and i need your help.

I want to vertex paint a terrain i build in Blender, by using Polybrush in Unity. The terrain in Blender was a plain first, i extruded some faces, sculpted some smooth edges, nothing special. If i import this to Unity, it will work fine.

But: If i add a subdivide modifier again on my finished terrain in Blender, it will stop working in Unity. As you can see in Picture 1, this is my model imported to unity, with a shader which supports vertex paint. And in Picture 2 is the same model when i try to vertex paint the mesh.

From these pictures, can anyone tell me wtf is going on? i dont even know what to goole anymore. Any tips are much appreciated!

1 Screenshot-2020-01-01-at-15-41-44 hosted at ImgBB — ImgBB
2 Screenshot-2020-01-01-at-15-41-36 hosted at ImgBB — ImgBB

2

It’s subdivide modifier. Why do you need it?

3

Just to make it look smoother. Is there another modifier i should use instead?

4

Bring your mesh into unity, and then get probuilder, select the imported mesh, then choose the option “ProBuilderize”. This converts it into a probuilder object. Now you can smoothen/edit/do whatever you want to your blender mesh on Unity itself. I just learned this so I’d share this with you. But you can leverage the best of both worlds with ProBuilder and Blender and Polybrush’s prefab scatter on mesh mechanic.

5

He should probably “apply” the modifier first