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"

Trouble with Light Maps and Baking Shadows.

Hi all,

I am having trouble generating light maps and getting good results when building lights, so it is time to ask for help.

I have a fairly simple mesh of a wall section with a stairs running up in the middle, made in Blender 2.79:

alt text

The main mesh is maid out of eight different meshes then joined together (stairs, railing, walls, yellow line, ect.), all properly triangulated in Blender.

As I was getting very weird result with auto-generated light maps after importing it to UE4, I've decided to make my own in Blender as well, which--according to the ton of tutorials I've watched--should be fine:

alt text

When I render lighting in UE4 (4.22.2), however, I still get incorrect shadows (though it is much better than was before). I have small dark spots, the shadow on the stairs is all jacked up, and the wall section on the right is noticeable lighter than the others:

alt text

I have tried increasing the resolution of the light map all the way to 1024 (which, if I understand it correctly, is way too high), but I am having the same errors. Do you fine people have any insight on what I am doing wrong and what I could be doing in order to get better results when building lighting?

Product Version: UE 4.22
Tags:
more ▼

asked Jun 17 '19 at 12:50 AM in Rendering

avatar image

RinceArt
3 1 2

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

1 answer: sort voted first

Hi!

Your problem is still with the lightmap! Just set a 1024 res checker (or any) texture to your mesh and you'll see how low res it is and blurry and... Also it's not ideal to rotate a uv island that has a 90 angle: you should snap it to pixel if you want proper lighting results! Also very small islands that are smaller than a texel won't receive any lighting information!

more ▼

answered Jun 17 '19 at 02:29 PM

avatar image

Makigirl
1.3k 5 4 8

(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