Texture packer for 3d models?

Hi.

I bought a 3d vehicles (cars) package from the assetstore.

All vehicles are low poly and every car has it's own color texture with 128x128.

My problem here is, when I have a lot of static cars (10-20 pieces) in the scene, I get too much draw calls. (SetPass Calls: 19-20. It's not good for mobile)

Is there a fast way to take this 128x128 color textures from every 3d model and put them on a 1024x1024 image? Then all the textures would be on the one image. And I would not have so many draw calls.

Is there a automatic texture packer or something like that?

I know, that I can do this by myself like open the 3d model in blender and then put the UV on the new 1024x1024 image. But that costs a lot of time.

Thanks!

 

As far as Im aware the best/fastest way to accomplish this would be in 3D. A pretty simple process to be honest.
Are those color textures just color swatches/palette?
If so could probably get away with texturing all the vehicles in 1x128 or at max 1x256 color texture.

 

There's an asset called Mesh Baker that does exactly what you're looking for.
https://assetstore.unity.com/packages/tools/modeling/mesh-baker-5017

 

... some years letter...

There's now https://www.codeandweb.com/texturepacker3d - it combines the textures of multiple fbx files into new textures.