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"

Stationary Lights GI

Hi, I'm new to the engine, though not new to the computer graphics.

Recently, experimenting with Unreal Engine lights I discovered that changing it's parameters like intensity and color doesn't affect its GI impact. Though, it should, by stationary light description (it's a light, which position is constant, but parameters might be dynamic). Seems that it's been this way for a few years. On the forum I found a question about that - a developer wanted to make a partially dynamic light in an interior scene - one light inside each room in 3D house. So, those lights are defined as stationary and precomputed. GI produced by them looks very nice and realistic. But once you dynamically change its intensity, let's say you turn off the light in the kitchen, only direct light impact disappears, all GI from it stays there and looks broken! I'm pretty sure you are aware of this behavior and would define it "by design", but we, engine users, really want GI be more dynamic! It's extremely important in the interior scenes. I understand that it would require to build lightmaps separately from each light source and consume a lot of memory. But why could it not be an optional feature? It doesn't seem to be too difficult to implement.

Thank you, Artem

Product Version: UE 4.15
Tags:
more ▼

asked Mar 19 '17 at 12:11 AM in Rendering

avatar image

art926
1 1

(comments are locked)
10|2000 characters needed characters left

0 answers: sort voted first
Be the first one to answer this question
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