This is a paid asset, but now you can download it totally free. However, please keep in mind that this package is only provided for studying or testing the product prior to purchasing it, not for business functions.
Overview :
Mesh Combiner is a little tool that can combine different meshes into one to reduce the number of batches and draw calls, making your game more optimized.
Highlights:
- You can use it in the edit mode and in the play mode from the inspector or via code.
- In Unity 2017.3 or higher, the vertex limit is set to 4 billion in combined meshes if their number of vertices is over 65535.
- In older versions of Unity, the limit is constant and is set to 65535 (you can not have mesh with over 65535 vertices).