With 'Screen Space - Camera' render mode, sorting is incorrect

[young900101]

"xuanwo" is a particle.when i move down "xuanwo",it is above the GreenImage.Why?

[young900101]

Tested in Unity 2018.3.1f1

[mob-sakai]

Hi @young900101
Thank you for reporting.

I would like to know more information on this issue.

• Is it in play mode or in edit mode, or both?
• What Canvas.RenderMode did you set?
• Is ParticleSystem.Renderer disable?
• Please tell me the version of ParticleEffectForUGUI you are using. [e.g. v1.3.2]
• Can you submit a reproducible minimum project for this issue?

[young900101]

1.in play mode.in edit mode,the particle dosen't show.
2.Screen space-camera
3.disabled
4.1.3.2
5.wait a few minutes

[young900101]

UIParticleTest.unitypackage.zip

[young900101]

is this unitypackage available? @mob-sakai

[mob-sakai]

Thank you for your reply, @young900101
Your unitypackage is working.

[mob-sakai]

Your unitypackage reproduced the issue.

Strangely, it works well with Screen Space - Camera render mode...🤔

[young900101]

thanks for your reply.particle is above image when i move it? @mob-sakai

Your unitypackage reproduced the issue.

Strangely, it works well with Screen Space - Camera render mode...🤔

that is to say,the situation that the particle is above the image is right? @mob-sakai

[mob-sakai]

Oh, I'm sorry, I made a mistake.
Actually, "with Screen Space - Overlay" is correct.

The scene works well with Screen Space - Overlay render mode.

[mob-sakai]

I do not know why, but it worked fine when setting transform.localPosition.z to 0.01.
Why...?

[mob-sakai]

[mob-sakai]

Try this script.
UIParticle.cs

[young900101]

Try this script.
UIParticle.cs

Aha~ A strange way!A strange result!
The sorting result is correct as long as z!= 0.But In my view,z is not affect the sorting result of the UGUI.So i feel confused.
Maybe this is not a perfect way to fix this bug,but it works fine.
Moreover,This is an awesome project.Thanks for your time!

[evakimox]

Hello there. Thanks for this great plugin. Sorry for bring this up 2 yrs after.

I am using this UGUIParticle tool with Version 3.3.0. I had no problem in Game view when my canvas is set to Screen Space - Overlay. I am still having sort issue with canvas set to Screen Space - Camera.
I tested on 2 particle systems with Screen Space - Camera canvas.

1. The first particle system I used the default created particle cone.
2. The second particle system has no z-axis speed, no z-axis behavior (all particles lies in the same plane)

I tried adjust z axis of the UIParticle. In this case, the 1st particle system always shows everything, while the 2nd particle system display depends on z-axis order.(It sorts element depend on z axis, but does not actually move the object)

I realized the code has changed a lot since then, so I did not replace the UIParticles.cs file.
I am curious about how the plugin handles different particles.

Also I am using Unity 2019.4.18 with URP 7.5.2. This is the Unitypackage that reproduces my test
UIParticlesSortingProblemDesc.zip