Terrain Converter - Terrain to Mesh for Unity 6, MicroVerse, Gaia Terrain

Overview

Convert Unity terrains into optimized mesh assets with baked textures, LOD groups, and FBX export. Ideal for the creation of e. g. backdrop environments like mountains.

Terrain Converter takes your Unity Terrain and produces a clean, game-ready mesh with blended textures, configurable simplification, and automatic LOD generation. Everything runs inside the editor with GPU-accelerated texture blending and built-in mesh simplification.

The result is a standard mesh prefab with materials, ready to drop into your scene or export as FBX for use in other tools.

The main intent of the creation of this asset was that I wanted to create backdrop mountains using MicroVerse in order to create the immersion of a vast environment for the player.

This asset is part of the Genesis for MicroVerse suite. However, since it works general purpose as well this asset is being released as a dedicated asset.

Upgrade Path

Everyone who owns any of these assets will get this asset at a discount:

• Ultimate StampIT! Collection
• Genesis for MicroVerse

Requirements

The following is required for this asset:

• Unity 6.0 or later
• Unity 6.3+ for MeshLOD simplification (otherwise Fast QEM and QEM are available)
• Unity FBX export package: com.unity.formats.fbx package
• Unity terrain shader
• Linear color space

Features

Mesh Generation

Generate meshes from your terrain heightmap at configurable grid resolutions from 32×32 up to 1024×1024. The converter samples the heightmap directly and produces a clean, UV-mapped mesh with proper normals and tangents.

Mesh Simplification

Built-in simplification methods to reduce polygon count:

• Fast QEM (Quadric Error Metrics): Forstmann simplification with boundary and UV seam preservation. Adjustable keep percentage (1–100%) and three quality presets (Low, Medium, High)
• QEM (Quadric Error Metrics): Garland-Heckbert simplification with boundary and UV seam preservation. Adjustable keep percentage (1–100%) and three quality presets (Low, Medium, High)
• MeshLOD (Unity 6.3+): Uses Unity's built-in MeshLodUtility to generate LOD levels directly in the mesh index buffer. Optionally extract a specific LOD level as a standalone flat mesh.

GPU Texture Blending

Terrain layer textures are blended on the GPU using a compute shader. The system reads your terrain's splatmaps and layer settings (tiling, offset, diffuse remap, mask remap, normal scale, metallic, smoothness) and produces ready-to-use textures:

• Albedo (BaseColor) - blended diffuse with alpha
• Normal Map - blended and decoded tangent-space normals
• Mask Map (MOADS) - metallic, occlusion, detail, smoothness packed

Supports output resolutions from 512×512 to 8192×8192 with optional supersampling (2×, 4×, 8×).

LOD Group Generation

Automatically generates a complete LODGroup with configurable level count (2–5), per-level

screen transition thresholds, and per-level simplification ratios. Each LOD level gets its own

simplified mesh asset. Works with Fast QEM, QEM and MeshLOD simplification.

FBX Export

One-click export to FBX format via Unity's FBX Exporter package. The exported FBX is

automatically configured with correct import settings (normals, tangents, no animation,

readable mesh).

Scene Placement

Place the converted mesh at the same position as the source terrain, or offset it to any side (left, right, front, behind) for easy comparison.

Batch Processing

Convert a list of terrains individually or combine them all into a single mesh.

What this is not

This asset is not designed to convert multi-tile terrain into individual meshes and keep the vertices aligned across bounds, especially not with vertex reduction active. The conversion is performed on the heightmap and textures, terrain specific features like trees and details aren't transitioned.