First of all, you don’t need to export the 3D model in Blender because you can perfectly work in Unity using the Blender files, you just need to take the blend file and all the textures aplied to the model, move all the files to a folder inside your project in Unity and then you can take the Blend file and drag it to the scene in Unity, doing that you can use the Blender models in Unity.
The textures of the 3D model could not be automatically applied when you do the previous step, so we will see how to apply the textures to the 3D model that was exported from Blender, but first let me suggest to check the following video in which I explain all the process in detail:
Apply the texture to the exported model
In your Unity project select the blend file and in the inspector go to the Materials section (leave the image for reference) and there you will find all the materials that you defined in Blender, to remap the materials you have two options, you either replace the materials from the 3D model with new materials created in Unity or you extract the materials present in the Blend file.
Remap the Blender materials with new materials created in Unity
- Create a new material.
- Drag the material to the material field in the inspector.
- Click on apply to remap.
- Drag the textures to the material and adjust parameters to get the result you need.
- Repeat the previous steps for every material your model has.
Remap the Blender materials by extracting them from the 3D model
- Unfold the Blend file to find all the materials defined in Blender.
- Select all the materials, right click and choose “extract from prefab” (check image below).
- Save those materials and that way Unity create all the materials for you and automatically remap to those materials.
- Drag the textures to the material and adjust parameters to get the result you need.
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