fix: sub-emitter particles may not render correctly in certain scenarios

close #248
mob-sakai · Jan 3, 2025 · ef4dbc3 · ef4dbc3
1 parent 27551a4
commit ef4dbc3
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/Packages/src/Runtime/UIParticleRenderer.cs b/Packages/src/Runtime/UIParticleRenderer.cs
@@ -548,6 +548,24 @@ private Matrix4x4 GetWorldMatrix(Vector3 psPos, Vector3 scale)
                                * Matrix4x4.Scale(scale)
                                * Matrix4x4.Translate(-psPos);
                     }
+
+                    if (_mainEmitter)
+                    {
+                        if (_mainEmitter.IsLocalSpace())
+                        {
+                            return Matrix4x4.Translate(psPos)
+                                   * Matrix4x4.Scale(scale)
+                                   * Matrix4x4.Translate(-psPos);
+                        }
+                        else
+                        {
+                            psPos = _particleSystem.transform.position - _mainEmitter.transform.position;
+                            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))