Unified Terrain Mesh + FBX ExporterThis is a powerful Unity Editor tool that combines two main functions in one window:

1. Terrain Mesh ConverterConverts Unity Terrain into a regular 3D Mesh (GameObject with MeshFilter, MeshRenderer, and MeshCollider).Installation

Install Unity FBX Exporter Package (required)Go to Window Package ManagerClick the button unity registrysearch fbx exporter install package.

Place the script UnifiedTerrainMeshFBXExporter.cs into your project folder:\Assets\scriptRestart Unity (recommended).

Tool OverviewUnified Terrain Mesh FBX Exporter is a custom Unity Editor window that combines two powerful features:

1. Terrain to Mesh Converter (with Texture Baking)
2. FBX Scene Exporter

Overview GUIMesh Quality slider (1–10): Controls the level of detail. Higher values = more polygons and better accuracy.Generates proper UVs and normals.Creates a clean top-down baked texture of the terrain surface only (trees, rocks, and other objects are automatically hidden during baking).Bake Terrain Texture button: Bakes only the terrain surface into a PNG texture + creates a material.Apply Texture to Mesh button: Applies the baked texture and material to the generated mesh.Optional: Save mesh as .asset and/or create a .prefab.

1. FBX Scene Exporter

Exports the entire active scene (or selected objects) to FBX format.Supports Unity FBX Exporter package (com.unity.formats.fbx).Option to copy all used textures to the export folder.Option to embed textures directly into the FBX file.Exports with world-space positions.

Key Features

Clean UI with centered, framed layout.Temporarily disables other renderers during texture baking only the pure terrain surface is baked.Smart material creation (tries URP Lit first, then Standard, then Unlit fallback).Ready for export to Unreal Engine 5 or other 3D software.

How to Use

Place the script in \Assets\scriptOpen via Tools Unified Terrain Mesh FBX ExporterAssign your Terrain objectClick Convert Terrain to MeshClick Bake Terrain Texture(It is recommended to assign a manually generated texture to the materialIt is recommended to assign a manually generated texture to the material)Click Apply Texture to MeshClick Export