Does Unity 5 use PhysX terrain?

Unity Engine
1

Does Unity 5 use the PhysX heightfield / terrain class for its terrain?

2

All versions of Unity use the heightfield collider.

–Eric

3

Yes, but is the heightfield collider based on PhysX?

4

The only physics in Unity are PhysX for 3D and Box2D for 2D. If it uses 3D physics then by definition it’s using PhysX.

–Eric

5

From what I’ve heard, it probably is. Using the terrain collider is much faster than a mesh collider so the chances of it using an equivalent physx call for the task is fairly likely. It’s faster.

6

How would I go about figuring this out with absolute certainty? Experimentally?

7

It is absolutely certain. Unity - Scripting API: TerrainCollider

–Eric