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"

Particle collision bug?

Hello there. I do not know if this is a bug, or it supposed to work. I've checked the ContentExamples for the colliding GPU particles, and it works perfectly, while I'm using an opaque material on my object. When I put a mesh with a translucent material (glass) under the particle system, the collision stops working. Any idea?

Product Version: Not Selected
Tags:
more ▼

asked Feb 08 '15 at 08:31 PM in Using UE4

avatar image

Lostra01
128 11 16 24

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

2 answers: sort voted first

Hi Lostra, I believe this is because the translucent material isn't written into the z-buffer which the GPU particles use for collision testing.

more ▼

answered Feb 08 '15 at 09:29 PM

avatar image

Jona
1 2 3

avatar image Lostra01 Feb 09 '15 at 08:19 AM

Do you happen to know any workaround, to have particle collision on a totally transparent, or at least glassy object?

avatar image Jona Feb 09 '15 at 01:13 PM

It should be possible to create a vector field to have your particles look like they are colliding and then have some extra CPU particles to do actual collision.

That'd be a lot of work however.

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

Now you can use Distance field instead of scene depth

more ▼

answered Oct 10 '15 at 05:15 PM

avatar image

IvanRodriguez
106 4 11 18

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