Transparency sorting and particles

[Poupi]

Hi,

I’m facing a very annoying issue when dealing with particles and transparency sorting. I have two effects, an alpha blended cloud and a swirl of particles that moves around the cloud. The swirl is one particle system using another alpha blended shader, meaning that the sorting between the two effects is fucked : the swirl is either displayed in front or behind the cloud.

This is the actual effect :

And what I want to do :

Anyone having an idea to do this ? Like some kind of masking rendered by a second camera. The scene is quite simple, so any kind of trick will probably work.

Thanks in advance !

[ifurkend]

No, you can’t have two or more translucent objects (or particle systems) with intertwined depth sorted perfectly. This is a well-known issue. Your best solution is to change the material of that swirl to opaque