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"

What is the cost and viability of conditional materials with open world level streaming?

I'm looking to build a large scale open world with changing seasons. As far as I understand, importing a tiled landscape with level streaming/world composition enabled will subdivide the overall world into separate levels as defined in the imported file. Can I use Landscape Layer Switch (or something similar) to assign different layers of landscaping materials based on a Season boolean value when the level loads? How will this impact performance?

Another question ( https://answers.unrealengine.com/questions/26388/conditional-statement-in-material.html ) mentions conditional statements in materials, which would be useful for un/applying a snow layer on trees or grass, although that leads me to my second series of questions-

Is there likely to be much of a performance impact in loading different tree models based on a seasonal value? Can I assign conditional foliage? Also, how might this impact LODs?

Product Version: Not Selected
Tags:
more ▼

asked Feb 17 '15 at 08:38 PM in Using UE4

avatar image

The_Shane
1 1 3 5

avatar image Jacky Feb 17 '15 at 08:52 PM

You could use Material Parameter Collections to make global changes in materials like seasonal changes you mention. As to replacing the foliage meshes in run time, currently it is not possible without touching the source code(and i wouldnt know how to achieve that with code) but we will be able to use blueprints as foliage in the future so that may be the solution for this.

avatar image The_Shane Feb 17 '15 at 09:38 PM

Thanks! This is exactly what I was looking for. That's a shame about foliage blueprints, but this is a long-term endeavor, so as long it's on the to-do list, I can be patient.

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

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