Know that I am definately a newbie regarding 3D editing, and that using a 3D composing software (3DS, Maya, ...) is not a skill I have.
So, I purchased a 3D model instead.
The 3D model appeared very well textured in its store, and was delivered in a variety of formats (3DS, Maya, ...) along with its textures. I thought that it would be easy to reuse. It is a very detailed model (160 000 polygons) of some sort of room. I would like to make the player walk inside this room, but this question will maybe for later.
When I import the model, it appears untextured (gray thing). It translates into hundreds of mesh filters and meshes and about 6 texture files. I cannot try to put textures manually on every mesh, this sounds like an impossible task.
Unity also tells when importing the textures that "No downsample shader assigned! disabling glow".
To verify this, I created a camera, set it inside the room, and activate it. It displays the gray/black things inside, that's all. Creating an ambient light does make things lighter, but still untextured.
I am trying to contact the author to know more but this surely is an Unity importing problem, something I do not do the right way, or a Unity 3D-basics problem.
I need help on this one; I absolutely do not know what to do with the "textures without glow" and all this. Knowing that I am not fond of 3D-composing, I need to learn how to import existing models and use them right away.
I tried Maya-trial version to export it to FBX and import it there, this didn't improve the result. I am also newbie in Unity.