Combine Instances error

[cfoulston]

NOTE: Your issue may already be reported! Please search on the issue tracker before creating one.

Describe the bug
A clear and concise description of what the bug is.

Cannot combine into a mesh that is also in the CombineInstances input:
0x00007FF63A50A14C (Unity) StackWalker::GetCurrentCallstack
0x00007FF63A50E171 (Unity) StackWalker::ShowCallstack
0x00007FF63B777A05 (Unity) GetStacktrace
0x00007FF63C60771E (Unity) DebugStringToFile
0x00007FF639B4974A (Unity) CombineMeshes
0x00007FF639B49B2E (Unity) MeshScripting::CombineMeshes
0x00007FF63A5EB90A (Unity) Mesh_CUSTOM_CombineMeshesImpl
0x000002A2B440E6A0 (Mono JIT Code) (wrapper managed-to-native) UnityEngine.Mesh:CombineMeshesImpl (UnityEngine.Mesh,UnityEngine.CombineInstance[],bool,bool,bool)
0x000002A2B440E5B3 (Mono JIT Code) UnityEngine.Mesh:CombineMeshes (UnityEngine.CombineInstance[],bool,bool)
0x000002A2B440DC6B (Mono JIT Code) [MeshHelper.cs:95] Coffee.UIExtensions.MeshHelper:CombineMesh (UnityEngine.Mesh)
0x000002A2B4403213 (Mono JIT Code) [UIParticleUpdater.cs:241] Coffee.UIExtensions.UIParticleUpdater:BakeMesh (Coffee.UIExtensions.UIParticle)
0x000002A2B43FFB53 (Mono JIT Code) [UIParticleUpdater.cs:66] Coffee.UIExtensions.UIParticleUpdater:Refresh (Coffee.UIExtensions.UIParticle)
0x000002A2A7F0A6BB (Mono JIT Code) [UIParticleUpdater.cs:48] Coffee.UIExtensions.UIParticleUpdater:Refresh ()
0x000002A2A7ED1EB2 (Mono JIT Code) (wrapper delegate-invoke) :invoke_void ()
0x000002A2A7ED1CCC (Mono JIT Code) UnityEngine.Canvas:SendWillRenderCanvases ()
0x000002A2A7ED1D6D (Mono JIT Code) (wrapper runtime-invoke) object:runtime_invoke_void (object,intptr,intptr,intptr)
0x00007FF9C10ED8A0 (mono-2.0-bdwgc) [mini-runtime.c:2809] mono_jit_runtime_invoke
0x00007FF9C1072912 (mono-2.0-bdwgc) [object.c:2921] do_runtime_invoke
0x00007FF9C107B96F (mono-2.0-bdwgc) [object.c:2968] mono_runtime_invoke
0x00007FF63A3AAA24 (Unity) scripting_method_invoke
0x00007FF63A3A455B (Unity) ScriptingInvocation::Invoke
0x00007FF638FF9896 (Unity) UI::InitializeCanvasManager'::2'::UIEventsWillRenderCanvasesRegistrator::Forward
0x00007FF639D28E41 (Unity) InitPlayerLoopCallbacks'::2'::PostLateUpdatePlayerUpdateCanvasesRegistrator::Forward
0x00007FF639D11BD9 (Unity) ExecutePlayerLoop
0x00007FF639D11CB0 (Unity) ExecutePlayerLoop
0x00007FF639D16F0C (Unity) PlayerLoop
0x00007FF63AFA4EEE (Unity) PlayerLoopController::UpdateScene
0x00007FF63AFA40E0 (Unity) Application::TickTimer
0x00007FF63B79E8E3 (Unity) MainMessageLoop
0x00007FF63B7A7C4E (Unity) WinMain
0x00007FF63D410556 (Unity) __scrt_common_main_seh
0x00007FFA4AED7BD4 (KERNEL32) BaseThreadInitThunk
0x00007FFA4CB2CE51 (ntdll) RtlUserThreadStart

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment (please complete the following information):

• Version [e.g. 1.0.0]
• Platform: [e.g. Editor(Windows/Mac), Standalone(Windows/Mac), iOS, Android, WebGL]
• Unity version: [e.g. 2020.1.2f1]
• Build options: [e.g. IL2CPP, .Net 4.x, LWRP]

Additional context
Add any other context about the problem here.

[mob-sakai]

@cfoulston
What version of ParticleEffectForUGUI and what version of Unity are you using?

[cfoulston]

Unity 2020.1.2f1
Particle UI 3.0.0-preview 30
URP 8.2.0

I'll try creating a simple repo tomorrow. But my current setup is having multiple particles in a scroll rect, and when disabling and enabling parents the issue occurs.

It does not occur on first play. Only after second play

[mob-sakai]

@cfoulston
Thank you for your cooperation.

[mob-sakai]

@cfoulston
It is reproduced in my environment.

[github-actions]

🎉 This issue has been resolved in version 3.0.0-preview.31 🎉

The release is available on:

• GitHub release
• v3.0.0-preview.31

Your semantic-release bot 📦🚀