fix: the changes made to the material used by the ParticleSystem are not immediately reflected

close #280

Scripts/ModifiedMaterial.cs

@@ -7,13 +7,13 @@ namespace Coffee.UIParticleExtensions
     {
         private static readonly List<MatEntry> s_Entries = new List<MatEntry>();
 
-        public static Material Add(Material baseMat, Texture texture, int id)
+        public static Material Add(Material baseMat, Texture texture, int id, int props)
         {
             MatEntry e;
             for (var i = 0; i < s_Entries.Count; i++)
             {
                 e = s_Entries[i];
-                if (e.baseMat != baseMat || e.texture != texture || e.id != id) continue;
+                if (e.baseMat != baseMat || e.texture != texture || e.id != id || e.props != props) continue;
                 ++e.count;
                 return e.customMat;
             }
@@ -24,6 +24,7 @@ namespace Coffee.UIParticleExtensions
                 baseMat = baseMat,
                 texture = texture,
                 id = id,
+                props = props,
                 customMat = new Material(baseMat)
                 {
                     name = $"{baseMat.name}_{id}",
@@ -64,6 +65,7 @@ namespace Coffee.UIParticleExtensions
             public int count;
             public Material customMat;
             public int id;
+            public int props;
             public Texture texture;
         }
     }

Scripts/UIParticleRenderer.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using Coffee.UIParticleExtensions;
+using UnityEditor;
 using UnityEngine;
 using UnityEngine.Profiling;
 using UnityEngine.Rendering;
@@ -200,7 +201,12 @@ namespace Coffee.UIExtensions
 
             //
             var id = _parent.m_AnimatableProperties.Length == 0 ? 0 : GetInstanceID();
-            modifiedMaterial = ModifiedMaterial.Add(modifiedMaterial, texture, id);
+#if UNITY_EDITOR
+            var props = EditorJsonUtility.ToJson(modifiedMaterial).GetHashCode();
+#else
+            var props = 0;
+#endif
+            modifiedMaterial = ModifiedMaterial.Add(modifiedMaterial, texture, id, props);
             ModifiedMaterial.Remove(_modifiedMaterial);
             _modifiedMaterial = modifiedMaterial;
 
@@ -443,6 +449,17 @@ namespace Coffee.UIExtensions
 
             // Update animatable material properties.
             Profiler.BeginSample("[UIParticleRenderer] Update Animatable Material Properties");
+
+#if UNITY_EDITOR
+            if (_modifiedMaterial != material)
+            {
+                _renderer.GetSharedMaterials(s_Materials);
+                material = s_Materials[_isTrail ? 1 : 0];
+                s_Materials.Clear();
+                SetMaterialDirty();
+            }
+#endif
+            
             UpdateMaterialProperties();
             if (_parent.useMeshSharing)
             {