I have a large model (.obj file) that was generated by another piece of software and represents a real world location. I also have a very large texture (.jpg file) that was created from images of that location.

I would like to import this model and texture into Unreal Editor. Unfortunately, Unreal only supports importing texture files that are 8192x8192 or smaller. My texture is 32768x32768.

I'm new to Blender, but I was hoping to use it to split up my model. Blender has no trouble importing everything. The texture is projected on the model correctly, and it all looks great. I came across this answer which suggests splitting the model using the Knife Project tool, but this method doesn't seem to split the texture.

I'm at a loss trying to figure out how to do this. I can't scale the jpg, because I'm looking to have a photo-realistic model. Any one have any ideas? Are there tools to do this?

  • 1
    $\begingroup$ Depends on the topology of your model, but I suggest to select individual parts of that model in Edit Mode, duplicate those parts ("Shift-D"), then - with the duplicate parts still selected - hit "P" and select "Selection" to separate the parts into a new model. UV-unwrap that part to your liking, then bake the textures from your big model to new textures you created for the smaller parts. $\endgroup$ – metaphor_set Jul 12 '19 at 22:46

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