x

Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

Lightmap UV creation in Maya

So when creating lightmap UVs in Maya, is it okay to use the automatic mapping in the second UV channel for lightmaps? I figure I don't have to be super careful like I do with the texture UVs as long as nothing is overlapping in the lightmap. Am I correct in thinking this?

Also, I know UE4 can create it's own lightmap UVs on a static mesh. How do I specify for it to create them, and is it an efficient way to work?

How do you all handle creating your lightmap UVs?

Thanks for your time!

-JN

Product Version: UE 4.18
Tags:
more ▼

asked Jan 25 '18 at 06:19 PM in Using UE4

avatar image

j.nissen321
5 1 2 4

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

2 answers: sort voted first

UE4 has a build-in lightmap generator and its pretty sample to use. you can check these tutorials:

https://www.youtube.com/watch?v=iE7qmglQH9M

https://www.youtube.com/watch?v=-sJsR0y7R8U

more ▼

answered Jan 25 '18 at 07:42 PM

avatar image

tx2line
256 8 10 23

(comments are locked)
10|2000 characters needed characters left
Viewable by all users

1/ make your UV in maya, automatic or custom in the channel 1, you can overlapping UV of the same mesh. But if you export many mesh as 1 asset (combine) your can't overlap each other. 2/ when your import the fbx, check generate lightmap, it will create the channel 2 for the lightmap. If a face use no uv space in the channel 1, it use no uv space in the channel 2, usefull if you don't want a face use lightmap.

more ▼

answered Jan 26 '18 at 10:09 AM

avatar image

strategia31
36 1 4 4

(comments are locked)
10|2000 characters needed characters left
Viewable by all users
Your answer
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question