Particle system: custom bounding box (AABB)

Unity Engine
,
1

Hi here!
I have to make a particle system position & vertex animation (shader).

Basically everything is fine with an animation of particles, BUT I have a huge problem with the bounding culling system.

Since the particles move far from their original positions, the built-in bounding system doesn’t work at all.
Everything would be amazing if I would be able just set my own fixed bounding box for particle system.
I need just set static AABB and nothing more.

Is it possible???

PS: If no: unity guys, would you be able to introduce such a cool feature for particle system?

2

You can force the bounds to be bigger by adding additional particles that are very far apart. For example one at 10,000, 10,000, 10,000 and one at -10,000, -10,000, -10,000. We currently dont have any plans to support custom bounds although I believe this is possible with the VFX system.

3

At least I can see particles all the time XD
I am not an AABB expert, is it possible to override particle AABB and activate/deactivate gameObject if it’s visible/invisible? Or maybe somehow to add my own culling system?

4

You could try this https://blogs.unity3d.com/2016/12/20/unitytips-particlesystem-performance-culling/

5

Thank you! It was helpful!

2 Likes