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"

Interact with shadow zones

Hello everyone, what I'm trying to do is to have a material that can behave differently where there is shadow and where is not. Any idea?

Davide

Product Version: UE 4.13
Tags:
more ▼

asked Oct 14 '16 at 09:25 AM in Rendering

avatar image

davi211
97 15 21 24

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

1 answer: sort voted first

There is no easy way to know if specific part of material is shadowed or not, because all the shadowing is done after all objects had been drawn.

There can be workarounds for specific cases, like for 1 directional light, for example. You could setup SceneCapture node in a such way, that it would render scene depth from light's point of view. Then in material that you want to react to the shadow, you would need to transform pixel's position into light's coordinate system and check if it is visible to light or not.Same principle can be applied to spotlight.

That is pretty advanced though, and may sound confusing. You might seek some other way to solve this task, for example doing object to light visibility trace checks using blueprints or even something else.

more ▼

answered Oct 14 '16 at 12:21 PM

avatar image

Deathrey
7.9k 130 31 293

(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