Cant dynamic batch because objects have different materials on particle system

Cant dynamic batch because objects have different materials on particle system.
Can anyone explain it to me?

 

What do you need explained? You can only dynamically batch the same material, not a host of different ones.

 

You might be able to fix this with a custom particle material and texture arrays. Advanced topic though

 

Or just use Material Property Blocks, which aren't an advanced topic. They don't get batched either but dramatically reduce overhead regardless.

https://thomasmountainborn.com/2016/05/25/materialpropertyblocks/

 

I have 2 draw dynamic glows. It's the same effect I spawned but it requires 2 draw calls. I don't understand why is it like that?

 

Not all foliage can be combined into one though using property block. If you make the foliage from scratch it's a different story.

Edit: ah sorry forgot topic was about particles not foliage but same logic applies

 

It could be worth noting that not everything needs to be "combined into one", and sometimes it doesn't help.

First up, this stuff matters when you have a huge number of things and need to avoid the overhead of having many draw calls. When I say "many" think "at least dozens, but probably hundreds". Put your effort where it'll make the biggest difference.

Second, batching isn't free, it takes effort - from the developer, the computer, or both. So getting a small number of batches down to one batch could in fact cost more than it saves, depending on where your bottlenecks are.