I placed a texture onto the structure in the picture and the texture renders fine on all horizontal surfaces but renders as a bunch of lines. What is causing this and how do I fix it?
Both scripting and Unity-based solutions would be appreciated.
This is either a problem with the uv map of the model or the material has some special mappings.
You can create a simple checker material and attach it to the wall: If it looks checkered the problem is the material, if it is not checkered the problem is the uv map of the model.