From 953a98706f8dd2f5b1b3782b74f1cfddbb36b76a Mon Sep 17 00:00:00 2001
From: pharan <johndygit@live.com.ph>
Date: Thu, 16 Mar 2017 12:15:58 +0800
Subject: [PATCH] [unity] Manually destroy meshes where required.

---
 .../Arrays/ArraysSubmeshedMeshGenerator.cs    | 19 +++++++++++++--
 .../Assets/spine-unity/SkeletonRenderer.cs    | 24 +++++++++++++++++--
 2 files changed, 39 insertions(+), 4 deletions(-)

diff --git a/spine-unity/Assets/spine-unity/Mesh Generation/Arrays/ArraysSubmeshedMeshGenerator.cs b/spine-unity/Assets/spine-unity/Mesh Generation/Arrays/ArraysSubmeshedMeshGenerator.cs
index 691d2e3be..4f0bd474e 100644
--- a/spine-unity/Assets/spine-unity/Mesh Generation/Arrays/ArraysSubmeshedMeshGenerator.cs	
+++ b/spine-unity/Assets/spine-unity/Mesh Generation/Arrays/ArraysSubmeshedMeshGenerator.cs	
@@ -35,7 +35,7 @@ namespace Spine.Unity.MeshGeneration {
 	/// <summary>
 	/// Arrays submeshed mesh generator.
 	/// </summary>
-	public class ArraysSubmeshedMeshGenerator : ArraysMeshGenerator, ISubmeshedMeshGenerator {
+	public class ArraysSubmeshedMeshGenerator : ArraysMeshGenerator, ISubmeshedMeshGenerator, System.IDisposable {
 
 		readonly List<Slot> separators = new List<Slot>();
 		public List<Slot> Separators { get { return this.separators; } }
@@ -50,6 +50,11 @@ namespace Spine.Unity.MeshGeneration {
 		readonly ExposedList<SubmeshTriangleBuffer> submeshBuffers = new ExposedList<SubmeshTriangleBuffer>();
 		Material[] sharedMaterials = new Material[0];
 
+		public void Dispose () {
+			doubleBufferedSmartMesh.GetNext().Dispose();
+			doubleBufferedSmartMesh.GetNext().Dispose();
+		}
+
 		public SubmeshedMeshInstruction GenerateInstruction (Skeleton skeleton) {
 			if (skeleton == null) throw new System.ArgumentNullException("skeleton");
 
@@ -232,11 +237,21 @@ namespace Spine.Unity.MeshGeneration {
 
 		#region Types
 		// A SmartMesh is a Mesh (with submeshes) that knows what attachments and instructions were used to generate it.
-		class SmartMesh {
+		class SmartMesh : System.IDisposable {
 			public readonly Mesh mesh = SpineMesh.NewMesh();
 			readonly ExposedList<Attachment> attachmentsUsed = new ExposedList<Attachment>();
 			readonly ExposedList<SubmeshInstruction> instructionsUsed = new ExposedList<SubmeshInstruction>();
 
+			public void Dispose () {
+				if (mesh != null) {
+					if (Application.isEditor && !Application.isPlaying) {
+						UnityEngine.Object.DestroyImmediate(mesh);
+					} else {
+						UnityEngine.Object.Destroy(mesh);
+					}
+				}
+			}
+
 			public void Set (Vector3[] verts, Vector2[] uvs, Color32[] colors, SubmeshedMeshInstruction instruction) {
 				mesh.vertices = verts;
 				mesh.uv = uvs;
diff --git a/spine-unity/Assets/spine-unity/SkeletonRenderer.cs b/spine-unity/Assets/spine-unity/SkeletonRenderer.cs
index 872e707b6..8917befc8 100644
--- a/spine-unity/Assets/spine-unity/SkeletonRenderer.cs
+++ b/spine-unity/Assets/spine-unity/SkeletonRenderer.cs
@@ -35,7 +35,6 @@
 
 //#define SPINE_OPTIONAL_FRONTFACING
 
-using System;
 using System.Collections.Generic;
 using UnityEngine;
 using Spine.Unity.MeshGeneration;
@@ -165,6 +164,13 @@ namespace Spine.Unity {
 				ClearState();
 		}
 
+		void OnDestroy () {
+			if (doubleBufferedMesh == null) return;
+			doubleBufferedMesh.GetNext().Dispose();
+			doubleBufferedMesh.GetNext().Dispose();
+			doubleBufferedMesh = null;
+		}
+
 		protected virtual void ClearState () {
 			meshFilter.sharedMesh = null;
 			currentInstructions.Clear();
@@ -740,10 +746,24 @@ namespace Spine.Unity {
 		#endif
 
 		///<summary>This is a Mesh that also stores the instructions SkeletonRenderer generated for it.</summary>
-		public class SmartMesh {
+		public class SmartMesh : System.IDisposable {
 			public Mesh mesh = Spine.Unity.SpineMesh.NewMesh();
 			public SmartMesh.Instruction instructionUsed = new SmartMesh.Instruction();		
 
+			public void Dispose () {
+				if (mesh != null) {
+					#if UNITY_EDITOR
+					if (Application.isEditor && !Application.isPlaying)
+						UnityEngine.Object.DestroyImmediate(mesh);
+					else
+						UnityEngine.Object.Destroy(mesh);
+					#else
+					UnityEngine.Object.Destroy(mesh);
+					#endif
+				}
+				mesh = null;
+			}
+
 			public class Instruction {
 				public bool immutableTriangles;
 				public int vertexCount = -1;