Workflow guide · 3D model generation

AI 3D model to game engine: generate, clean up in Blender, import

A clean, game-ready mesh (right scale, fixed normals, sensible polycount, baked normal map) in Unreal, Unity or Godot with its textures intact.

MeshyTripo AIHyper3D RodinSloydH2Hunyuan3D 2.1 (Tencent)

1. H2Generate
2. 2Export GLB/FBX
3. 3Clean up in Blender
4. 4Reduce + bake
5. 5Into your engine

Everyone: steps 1–6

1. 1

   Check your plan's licence

   MeshyTripo AI

   1. Before generating, look up what your generator plan lets you do with the output.
   2. Meshy Free: CC BY 4.0, so you can sell games using it if you credit Meshy. Paid Meshy plans give you private, customer-owned assets.
   3. Tripo Free: Tripo keeps the rights and doesn't grant commercial use. A paid plan gives you commercial rights.

   You should see: You know whether you can ship the model and what credit line, if any, it needs.

   Watch out: Summaries of Tripo's free tier online contradict each other, so go by Tripo's own help centre and terms.

   From the official docs: Tripo: can I use models commercially? ↗

2. 2

   Generate and export GLB or FBX

   MeshyTripo AI

   1. In Meshy, click Download and pick GLB (one file with textures inside) or FBX (better for rigs and animation).
   2. Turn on Quad Mesh in Meshy if you'll retopologise or rig, and set a target polycount with Remesh if you want.
   3. In Tripo, export GLB or FBX the same way.

   You should see: A single .glb file, or an .fbx with its texture files.

   Watch out: GLB stores triangles, so quads are lost. Export FBX or OBJ if you need to keep quads.

   From the official docs: Meshy: make models game-ready ↗

3. 3

   Import into Blender and clean up

   1. Use File > Import > glTF 2.0 (.glb/.gltf), or File > Import > FBX.
   2. In Object Mode, apply rotation and scale with Object > Apply > Rotation & Scale (Ctrl-A).
   3. In Edit Mode, select everything and run Mesh > Merge > By Distance to weld duplicate vertices.
   4. Run Mesh > Normals > Recalculate Outside (Shift-N).

   You should see: Scale reads 1, 1, 1, and the Face Orientation overlay shows no red (back-facing) patches.

   Watch out: Applying a negative scale flips faces; tick Corrective Flip Normals in the Apply options to fix it.

   ▶Meshy to Blender: Quick Guide to Auto-Import 3D Models & AnimationsMeshyAI · YouTube · loads when you press play

   From the official docs: Blender Manual: Apply ↗

4. 4

   Reduce the polycount

   1. Add a Decimate modifier in Collapse mode and lower Ratio until you reach the face count you want.
   2. For cleaner, even topology, use Properties > Data > Remesh in Voxel or Quad (QuadriFlow) mode instead.
   3. Keep a copy of the original high-poly mesh: you'll bake its detail in the next step.

   You should see: The modifier shows the new face count and the silhouette still looks right.

   Watch out: Remesh ignores modifiers and won't run on an object with a Multiresolution modifier.

   

   From the official docs: Blender Manual: Decimate modifier ↗

5. 5

   UV unwrap and bake the detail

   1. Remeshing removes the original UVs, so in Edit Mode run UV > Unwrap > Smart UV Project on the low-poly mesh.
   2. In the low-poly material, add an Image Texture node with a new image and leave it selected.
   3. Switch to Cycles, and under Render > Bake set Bake Type to Normal and turn on Selected to Active.
   4. Select the high-poly mesh, then Shift-select the low-poly one so it's active, and click Bake.

   You should see: A normal map on the low-poly mesh that brings back the high-poly detail.

   Watch out: If parts of the bake come out blank, raise Extrusion or Max Ray Distance, or use a cage.

   

   From the official docs: Blender Manual: render baking ↗

6. 6

   Export from Blender

   1. For glTF: File > Export > glTF 2.0, Format glTF Binary (.glb), with Selected Objects, Apply Modifiers and +Y Up on.
   2. For FBX: File > Export > FBX (.fbx) with Selected Objects and Apply Modifiers on.
   3. For engines that expect Y-up FBX, set Forward to -Z and Up to Y.

   You should see: One file that re-imports at the right size and facing the right way.

   Watch out: The FBX exporter's Apply Transform option is experimental and can break rigs and animation.

   From the official docs: Blender Manual: glTF 2.0 ↗

Written from the official documentation linked on each step and checked Sat 17 Oct. Menus and settings change between versions, so follow the linked docs if something looks different. No vendor reviews or pays for these guides.