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"

Setting global illumination

Hi, I've been adjusting light effect recently and i have three questions:(PS: all the uasserts in my project are loaded dynamically WITH c++ code.)

First, in the process, i found the effect very strange. The bed in following two pictures looks very different even if they have almost the same lighting setting. The bed in pic1 is almost black,very different from the sofa in the same picture. Do anyone have any ideas?

Second, why the models in my scene(pic1 and pic2) have no shadows made by indirect lights as in the pic3 and pic4.

Third,why is there a lighting leak in the corner of walls (shown in pic5).

alt text

alt text

alt text

alt text

alt text

Product Version: UE 4.9
Tags:
pic1.png (679.7 kB)
pic2.png (678.2 kB)
pic3.png (721.0 kB)
pic4.png (822.8 kB)
pic5.png (603.7 kB)
more ▼

asked Jan 11 '16 at 09:20 AM in Rendering

avatar image

AmyLin
6 4 8 10

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

1 answer: sort voted first

I could be wrong, but it looks like a lightmap issue. Do you have a second UV channel for your lightmap properly set up?

more ▼

answered Jan 12 '16 at 07:14 AM

avatar image

jamesonart
45 4 4 8

avatar image AmyLin Jan 18 '16 at 03:31 AM

Do you mean the first question? No, i don't have any second UV.

avatar image jamesonart Jan 18 '16 at 06:13 AM

Take a look at this. It's for UDK but the same applies for UE4. If you're not generating your lightmap channel in UE4, you should set one up in your software of choice.

http://www.worldofleveldesign.com/categories/udk/udk-lightmaps-01-basics-and-important-principles-for-creating-using-lightmaps.php

avatar image AmyLin Jan 19 '16 at 06:03 AM

Thanks a lot. I read the link and i found it's related to static mesh. However, my uasserts are all loaded dynamically at runtime. So, i think it has little to do with second UV. Am i right?

(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