I just made a modular kit for our programmers for a game were working on, and I've painstakenly unwrapped all the pieces of the kit onto one single UV texture, they are separate objects.

In my blend file everything is fine and is using only one material (via principal shader (diffuse,Normal, Metal and rough - 4 image textures), however I noticed that when I export (via FBX) that the kit is using 100 plus material ID's and causing around the same number of draw calls.

Can any one tell me how to correctly export a modular kit to be used in Unity that only uses one texture? Trying to make this thing as efficient for them as possible.

  • $\begingroup$ Delete the unnecessary material slots in Blender. $\endgroup$ – FFeller Nov 19 '19 at 12:02

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