Unity PKFxRenderingPlugin.SetupCoroutine() high GC Alloc

Question

I'm trying to improve performance of my game, and I see in the profiler that

PKFxRenderingPlugin.SetupCoroutine()

is making a high amount of GC Alloc.

https://i.imgur.com/9RvyoeR.png

Is this simply due to creating a bunch of particles? How can I reduce this? I'm suspecting it is causing the garbage collector to run too frequently which results in low framerates.

Answer 1

Hi Lisk,

Particles should be handled by the native plugin that does not use C# garbage collection, so particle count should not matter for this.

Which version of Unity and of which version of the plugin are you using? If I remember correctly you are still using PopcornFX v1?

Comments

From what I am seeing in the PKFxRendering.cs and PKFxCamera.cs files of the latest v1 Unity plugin there are not much per-frame allocations.
Does this high amount of allocations happen when instantiating new effects or is this constant?

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Hi Paul, thanks for the reply. After a bunch of digging around, I found out that it was a bug in the Unity Profiler where some unrelated code (fog of war, which uses a shader, not popcorn fx) was being logged as PkFxRenderingPlugin in the profiler. It didn't seem to happen when I did a Deep Profile. Once I fixed the fog of war code, the GC Alloc on PkFxRenderingPlugin went away.

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Ok, thanks for the update!