• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
2
Question by CalledToGaming · Apr 08, 2010 at 05:48 AM · particlestimeparticleemitter

Particle Emitter Breaks in emission. Help?

I'm using a series of Particle Emitters for a waterfall in the scene. (Don't currently have a better way to do it) It doesn't look bad, the only problem is the Emitter will run for about 10 seconds, then stop, then It'll restart and run for another 10 seconds or so and continue like this. The breaks in the waterfall are undesirable. Any Ideas?

Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

1 Reply

· Add your reply
  • Sort: 
avatar image
5
Best Answer

Answer by duck · Apr 08, 2010 at 09:28 AM

The reason for this gap is that particle systems have a maximum number of particles that can be rendered at any one time.

The reason for the limit, is that each particle system is rendered with a single mesh, and Unity has a built-in upper limit for the number of vertices that any single mesh can use - 65536. Each particle uses 4 vertices, so that works out as 16384 particles (although in a test I just did, the total wouldn't go higher than 16250 particles... I guess there's something else going on there which causes the slight discrepency).

To solve your problem, turn the emission levels back down enough so that the "gap" stops occurring, and then if you need a denser effect, add a duplicate particle system in the same place.

You might even want to make a prefab of the original system, and then add instances of the prefab until it's dense enough - this will mean you can adjust the parameters in the prefab to affect every instance in your scene in one go.

Comment
Add comment · Share
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

The best place to ask and answer questions about development with Unity.

To help users navigate the site we have posted a site navigation guide.

If you are a new user to Unity Answers, check out our FAQ for more information.

Make sure to check out our Knowledge Base for commonly asked Unity questions.

If you are a moderator, see our Moderator Guidelines page.

We are making improvements to UA, see the list of changes.



Follow this Question

Answers Answers and Comments

No one has followed this question yet.

Related Questions

Particle delay 1 Answer

Particles do not appear on play but do on emit 0 Answers

ParticleSystem.Play() does not play particle. 8 Answers

How can I make a particle effect turn on with a keystroke and last for a set duration? 1 Answer

Smoothly start and stop particles 1 Answer

  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges