How to create outlined particles or sprites?

Hi everyone,

I’m trying to make some blob like think for 2D.

My plan is to place sprites(or particles using sprites if possible) like below and use some shader to only show non-overlapping edges.

Example:
from this
[136460-스크린샷-2019-04-15-오후-71046.png|136460]
to this
[136459-스크린샷-2019-04-15-오후-71029.png|136459]

I believe using shaders can achieve what I want to do but I am no expert in shader stuff and completely lost :frowning:

I would really appreciate if one can enlighten me where I can begin with.

Not really the solution you asked for, but the same effect can be achieved by duplicating the particle system (ps) by using the same emission seed, then set the white ps with greater “order in layer” (Renderer module) than the black ps of smaller start size.