Can't create second UV Channel

Development Rendering
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1

Good day,

I now try to make my world a little photorealistic. But there is this one Problem wich this guy have too.

He has the same Problem wich I have right now. My UV-map looks just terrible as his.

I use the same solution but it still does not work.

It will not generate either a first UV-Channel (UV Channel 1) so then I can’t set my Lightmap Cordinate Index to one.

P.S. You guys are amazing who help us in this forum.
Thumps up :smiley:

2

if it doesnt work it means that your uv islands are overlapping itself.
unreal engine needs a clean uv-map that does not have mirrored nor itself-overlapping uv-islands to generate one.
if you failed to do so… well it either wont generate it, or messes it up.

3

Thanks for respond

Oh yes, its overlaping thats true,

but how can I clear the uv mapping so that the unreal engine can create a new one?

4

if there is abslutely no uv map (clear uv mapping) ue4 cant generate a uv-map for you.
all ue4 does is rearrange the existing uv-map into an empty uv-slot and tries to generally make sure each uv-island has about the same texel density.

You will need to go into your 3d program of choice (blender, maya, max, etc) and unwrap your mesh properly there.

if you dont know how, just google “how to unwrap meshes in program I use”

5

Yes, I looked for unrwap tutorials maybe I use 3dsautodesk

But I have a UVmap in the editor but it’s very overlapping like the guy before me

and how can I create a second UV-Channel if I still have a Uv overlapping map?

yours faitfully

6

this is not a 3dsmax forum, this is an UE4 answerhub.
if you actually watched the unwrap tutorials you would know how to add an additional uv-map.

7

Yes thats total True,

I mean the Unreal engine 4, not autodesk.
But my model is very full of details and it takes a long to set every shape etc.
My question was how can I do it with the unreal engine 4? If I have a overlapping UV
and the method from the over guy does not work for me.

For my other detailed models it works fine in the Unreal engine 4, although these other models has also overlapping Uvs :smiley:

8

you cant, you need to do that properly in a 3d program first, before ue4 can re-arrange what you made.

9

Okay, Thank you I’ll try :smiley: