From afe00a1dde80eb1c0a7bb668b75f4c3733d3fa43 Mon Sep 17 00:00:00 2001
From: Jie <fghj0810@gmail.com>
Date: Thu, 10 Oct 2024 19:42:26 +0800
Subject: [PATCH] fix: trail incorrect offset close #335

---
 Packages/src/Runtime/UIParticleRenderer.cs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Packages/src/Runtime/UIParticleRenderer.cs b/Packages/src/Runtime/UIParticleRenderer.cs
index 53a060b..3417e10 100644
--- a/Packages/src/Runtime/UIParticleRenderer.cs
+++ b/Packages/src/Runtime/UIParticleRenderer.cs
@@ -542,6 +542,12 @@ private Matrix4x4 GetWorldMatrix(Vector3 psPos, Vector3 scale)
                     return Matrix4x4.Translate(psPos)
                            * Matrix4x4.Scale(scale);
                 case ParticleSystemSimulationSpace.World:
+                    if (_isTrail)
+                    {
+                        return Matrix4x4.Translate(psPos)
+                               * Matrix4x4.Scale(scale)
+                               * Matrix4x4.Translate(-psPos);
+                    }
                     return Matrix4x4.Scale(scale);
                 case ParticleSystemSimulationSpace.Custom:
                     return Matrix4x4.Translate(_particleSystem.main.customSimulationSpace.position.GetScaled(scale))