UV Map

Development Rendering
1

I have imported a load of static meshes into UE4 and i have started apply materials (created in UE4).

Do i need to apply a UV Map in 3ds Max to all objects first? Or is there something you can do in UE4?

I have applied a material to a fairly basic object (near enough a cube) but the material hasn’t mapped correctly.

2

Yes, if you want your material to map correctly you have to do that in your 3D program first before exporting to UE4.

3

Cheers for the help (as always) Darthviper107

4

Is applying a UV Map to an object, collapsing to editable poly/mesh and then exporting to FBX enough?

I’ve seen people posting the need for applying 2 UVW Unwraps?

5

You need two UV sets:
One for your regular texturing (UV Channel 0)
and an additional UV Channel (UV Channel 1) for Lightmaps.

6

You can create second UV set in engine. It’s not perfect but saves tons of work.

7

That’s the Automatic Generate Lightmap UV’s setting, however it requires that the first UV channel has the UV seams already set up properly. All it does is it has a pretty good algorithm for flattening and packing the UV’s but it doesn’t create the seams for you.