What file format should I use to import Neural4D models into Unity?

We recommend exporting as .fbx from Neural4D. The FBX format encapsulates both the mesh geometry and material connections, making it the most reliable format for Unity import.

Why do my Neural4D textures not connect automatically in Unity?

Unity will not automatically connect the texture files to material slots. You will need to open the extracted material and manually drag each texture file into its corresponding slot: fbx_base_color.png into Albedo, fbx_normal.png into Normal Map, fbx_roughness.png into Smoothness (set Source to Roughness), and fbx_metallic.png into Metallic.

How do I use Neural4D models in URP or HDRP Unity projects?

After extracting materials, use Window > Rendering > Render Pipeline Converter to upgrade the materials to your project's render pipeline. Then manually assign the Neural4D textures to the upgraded material slots.

How to import 3D models into Unity?

Step 1: Get Your 3D Model from Neural4D

Before importing into Unity, you need a game-ready 3D model. Neural4D Studio lets you generate a fully textured, export-ready 3D asset from a text prompt or reference image in minutes – no modeling experience required.

Once your model is generated, navigate to Assets, select the model you want to export, then click Download and choose .fbx as the export format. You will receive a .zip archive – extract it before proceeding. The FBX format is the recommended choice as it encapsulates mesh data and material connections in a single file. The archive contains the following files:

File	Purpose
modelToUsed.fbx	The 3D mesh file. This is the file you will import.
fbx_base_color.png	Base Color (Albedo) texture map.
fbx_normal.png	Normal map for surface detail.
fbx_roughness.png	Roughness map controlling surface reflectivity.
fbx_metallic.png	Metallic map defining material metalness.
Image_0.jpg / Image_1.jpg / Image_2.jpg	Preview render images. Not used in the import workflow.

Downloading a Neural4D 3D model as FBX from Neural4D Studio

Step 2: Import the Asset

Open your Unity project. Drag and drop modelToUsed.fbx from the extracted folder directly into your Project window. We recommend creating a dedicated Models folder to keep your assets organized.

Unity will import the mesh automatically. The model will appear in your Project window and can be dragged into any Scene.

Step 3: Extract and Assign Materials

Select the imported model in the Project window. In the Inspector panel on the right, navigate to the Materials tab, then click Extract Materials and choose a folder to save them.

Unity will not automatically connect the texture files to material slots. Open the extracted material and manually drag each file from your Project window into its corresponding slot:

Neural4D Texture	Unity Material Slot
fbx_base_color.png	Albedo (Base Map)
fbx_normal.png	Normal Map
fbx_roughness.png	Smoothness (set Source to Roughness)
fbx_metallic.png	Metallic

Render Pipeline Note: If your project uses URP or HDRP, use Window > Rendering > Render Pipeline Converter to upgrade materials first, then assign textures to the converted slots.

Troubleshooting

Issue	Solution
Model appears white or untextured	The extracted material has no textures assigned. Open the material in the Inspector and manually drag each Neural4D texture file into the correct slot as described in Step 2.
Model scale is incorrect	Select the model in the Project window, open the Inspector's Model tab, and adjust the Scale Factor (try 1 or 0.01). Click Apply.
Model looks flat or shading looks wrong in URP/HDRP	The material was not converted to your render pipeline. Run Window > Rendering > Render Pipeline Converter and convert Built-in materials to your target pipeline.

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How to import 3D models into Unity?

Step 1: Get Your 3D Model from Neural4D

Step 2: Import the Asset

Step 3: Extract and Assign Materials

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