When generating materials from V-ray or any renderer in Maya with complex materials, you need to to bake the final result into may types of maps such as color, normal, alpha. You need to bake maps most of the times when working with high detailed models.

Not to mention one of the biggest issue called 'texture seams'.Īgain, this is done inside programs like Maya and Blender not Autocad. Without this, it's hard to do texturing and you'll run into issues. You have to unwrap the model's UV before importing the model into a game engine. Here are many reasons not to use Autocad to model your game objects: You have to do some work on the models to make it look good and even work properly with Unity's render engine. I see an answer below suggesting that it's totally fine to use Autocad models in Unity or model the objects in Autocad. Since you are already using Autocad, I suggest you use Maya since the UIs are now made to look similar. If your goal is to make a game, then you need to learn either Maya or Blender. You should spend that time making new models in Maya or Blender. Note that it will take time to clean the models up. Reduce the poly counts before importing into Unity. If you want to use your models from any of these software, export them to software such as Maya or Blender then clean the models up. Objects produced in Autocad, SolidWorks or other similar software should not be imported to Unity directly by any means. If your Autocad can export to any of these then the answer is yes.

Unity export scene to fbx