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"

GPU particles or Vector fields limitations?

I put 12 vector fields and 1 gpu particle emitter on my level. It was assumed that all vector fields will effect on particles flow, but only 4 of 12 fields work. I googled a lot, but couldn't find any useful information. Does UE4 have any unobvious limits in GPU particles or vector fields?

Similar question without solution: https://answers.unrealengine.com/questions/375747/only-four-vector-fields-working-in-blueprint.html

Product Version: UE 4.15
Tags:
more ▼

asked Jul 11 '17 at 06:07 AM in Using UE4

avatar image

slonorib
28 5 7

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

1 answer: sort voted first

You are right, and only 4 most relevant vector fields will affect your particles. This is a limitation of how it is hardcoded, probably considering performance/usability factors.

If you are fine with recompiling the engine yourself, you can edit MAX_VECTOR_FIELDS in both particle simulation shader and C++ code, and uncomment several lines to expand support for more fields at once, but generally, it is not very practical.

more ▼

answered Jul 11 '17 at 07:11 AM

avatar image

Deathrey
7k 126 27 285

avatar image slonorib Jul 11 '17 at 08:16 AM

Thank you :)

(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