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"

Office Holiday

Epic Games' offices will be on holiday from June 22nd to July 7th. During this period support will be limited. Our offices will reopen on Monday, July 8th. 

Why is my level warning me that I don't have an Importance Volume?

hey guys, For some reason i become this error message after building light... can someone tell me please what this is about?

[IMG]http://i62.tinypic.com/aonksz.jpg[/IMG]

Product Version: Not Selected
Tags:
more ▼

asked Apr 20 '14 at 11:11 PM in Using UE4

avatar image

A-J-K
46 9 12 16

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

1 answer: sort voted first

You need to put a Lightmass Importance Volume into your scene that encapsulates the area you want to build the lights for.

more ▼

answered Apr 20 '14 at 11:14 PM

avatar image

Jacky
16.8k 671 167 676

avatar image A-J-K Apr 20 '14 at 11:26 PM

Thanx! Where is this Lightmass Importnace ? Is it a option or what excatly? Where i can find it ? UE4 never asked before for something like this....

avatar image fighter5347 Apr 20 '14 at 11:29 PM

Just go to volumes and then drag it into your level + scale it up or down ;)

avatar image A-J-K Apr 20 '14 at 11:33 PM

Thanx, i found it... can you maybe tell me what the use of this Lightmass Importance is? I guess it has something to do with the lightmass :) but what excatly, in my last scenes UE4 never asked for a Lightmass Importance...

avatar image fighter5347 Apr 20 '14 at 11:35 PM

"Lightmass Importance Volumes are used to focus Lightmass calculations. Lightmass is the precalculated lighting and global illumination system used in Unreal Engine 4. In order to minimize - and thereby optimize - the amount of processing needed to generate precalculated lights in a level, Lightmass Importance Volumes are use to enclose the areas of the level geometry. Lightmass will only calculate within that area, skipping anything outside of it.

For more information on Lightmass and Lightmass Importance Volumes, please see the Lightmass documentation."

https://docs.unrealengine.com/latest/INT/Engine/Actors/Volumes/index.html#lightmassimportancevolume

avatar image Jacky Apr 20 '14 at 11:35 PM

Basically it limits the area lightmass calculates so that you dont spend hours trying to build lights for infinity. It is needed only when you build lights for static lighting.

avatar image A-J-K Apr 20 '14 at 11:42 PM

Ok got it, thanx! But i'm still curious why UE4 didn't asked for a lightmass importance in my few last scenes...

avatar image fighter5347 Apr 20 '14 at 11:54 PM

I think because now you have used a big landscape -> just in a big level with many meshes you need a lightmass importance volume .

(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