Importing AI-Generated GLB Assets into Unity: PBR, Colliders & Performance

The glTF 2.0 binary (.glb) format has become the universal standard for real-time 3D assets. Ai3DSculpt packs geometry, vertex colors, normal channels, and baked diffuse textures into a single self-contained binary file. Here is how to incorporate these assets directly into Unity.

1. Importing GLB via Unity glTFast

Unity natively supports glTF/GLB import via the official glTFast package:

1. In Unity, open Window > Package Manager.
2. Select Add package by name... and enter com.unity.cloud.gltfast.
3. Once installed, simply drag your .glb exported from Ai3DSculpt into the project Assets/Models folder.
4. Unity will automatically parse the embedded mesh hierarchy and textures.

2. Setting Up Materials in URP / HDRP

Ai3DSculpt models feature baked photorealistic textures:

• By default, glTFast maps embedded textures directly to Unity's Universal Render Pipeline (URP) Lit shader.
• If you wish to extract textures for custom shading, select the imported model, navigate to the Materials tab in the Inspector, and click Extract Textures.
• You can freely adjust the Smoothness slider (0.2 - 0.4 works well for matte materials) and apply normal intensity.

3. Physics & Colliders

For interactive game environments:

• Add a Mesh Collider component to the root child containing the mesh.
• For moving physics actors (rigidbodies), check Convex to allow dynamic physics simulation.
• For static level props, leave Convex unchecked and mark the GameObject as Static for precomputed lightmapping and occlusion culling.

With this pipeline, you can turn real-world objects into playable interactive video game props in under 5 minutes.