From 51a9e34f230b5d18bba68d64d0d0433a1465d65c Mon Sep 17 00:00:00 2001
From: Harald Csaszar <harald.csaszar@pixelcloudgames.com>
Date: Thu, 4 Dec 2025 22:05:22 +0100
Subject: [PATCH] [unity] Fix SkeletonSubmeshGraphic issue with multiple
 IMaterialModifier components. Closes #2966.

---
 .../Internal/SkeletonSubmeshGraphic.cs        | 25 +++++++++++++++++++
 .../spine-unity/Components/SkeletonGraphic.cs |  4 +--
 spine-unity/Assets/Spine/package.json         |  2 +-
 3 files changed, 28 insertions(+), 3 deletions(-)

diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/Internal/SkeletonSubmeshGraphic.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/Internal/SkeletonSubmeshGraphic.cs
index 5159bb882..3f315175b 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/Internal/SkeletonSubmeshGraphic.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/Internal/SkeletonSubmeshGraphic.cs
@@ -27,7 +27,15 @@
  * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  *****************************************************************************/
 
+#if UNITY_2021_1_OR_NEWER
+#define HAS_LIST_POOL
+#endif
+
+using System.Collections.Generic;
 using UnityEngine;
+#if HAS_LIST_POOL
+using UnityEngine.Pool;
+#endif
 using UnityEngine.UI;
 
 namespace Spine.Unity {
@@ -53,5 +61,22 @@ namespace Spine.Unity {
 			base.OnEnable();
 			this.canvasRenderer.cull = false;
 		}
+
+#if HAS_LIST_POOL
+		public Material UpdateModifiedMaterial (Material baseMaterial) {
+			List<IMaterialModifier> modifierComponents = ListPool<IMaterialModifier>.Get();
+			GetComponents<IMaterialModifier>(modifierComponents);
+
+			Material currentMaterial = baseMaterial;
+			for (int i = 0; i < modifierComponents.Count; i++)
+				currentMaterial = modifierComponents[i].GetModifiedMaterial(currentMaterial);
+			ListPool<IMaterialModifier>.Release(modifierComponents);
+			return currentMaterial;
+		}
+#else
+		public Material UpdateModifiedMaterial (Material baseMaterial) {
+			return GetModifiedMaterial(baseMaterial);
+		}
+#endif
 	}
 }
diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonGraphic.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonGraphic.cs
index a04f06743..75e873d52 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonGraphic.cs
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Components/SkeletonGraphic.cs
@@ -1024,7 +1024,7 @@ namespace Spine.Unity {
 							usedMaterial = multiplyMaterial;
 						else if (blendMode == BlendMode.Screen && screenMaterial)
 							usedMaterial = screenMaterial;
-						usedMaterialItems[i] = submeshGraphics[i].GetModifiedMaterial(usedMaterial);
+						usedMaterialItems[i] = submeshGraphics[i].UpdateModifiedMaterial(usedMaterial);
 					}
 				} else {
 					Texture originalTexture = submeshMaterial.mainTexture;
@@ -1035,7 +1035,7 @@ namespace Spine.Unity {
 					if (!customTextureOverride.TryGetValue(originalTexture, out usedTexture))
 						usedTexture = originalTexture;
 
-					usedMaterialItems[i] = submeshGraphics[i].GetModifiedMaterial(usedMaterial);
+					usedMaterialItems[i] = submeshGraphics[i].UpdateModifiedMaterial(usedMaterial);
 					usedTextureItems[i] = usedTexture;
 				}
 			}
diff --git a/spine-unity/Assets/Spine/package.json b/spine-unity/Assets/Spine/package.json
index 7313f0f20..ff489c119 100644
--- a/spine-unity/Assets/Spine/package.json
+++ b/spine-unity/Assets/Spine/package.json
@@ -2,7 +2,7 @@
 	"name": "com.esotericsoftware.spine.spine-unity",
 	"displayName": "spine-unity Runtime",
 	"description": "This plugin provides the spine-unity runtime core.",
-	"version": "4.2.110",
+	"version": "4.2.111",
 	"unity": "2018.3",
 	"author": {
 		"name": "Esoteric Software",