From 9217dee8c2e9affb831abed65249b5a59204f4ae Mon Sep 17 00:00:00 2001
From: BlackMATov <blackmatov@gmail.com>
Date: Mon, 29 Oct 2018 23:06:51 +0700
Subject: [PATCH] Fix preview shutdown warning

---
 .gitignore                                    |  1 +
 .../FTEditor/Editors/SwfClipAssetPreview.cs   | 11 +++++---
 .../Editor/FTEditor/Editors/SwfClipEditor.cs  | 27 +++++++++++++------
 3 files changed, 28 insertions(+), 11 deletions(-)

diff --git a/.gitignore b/.gitignore
index ac4150d..9bd7280 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@ obj/*
 Temp/*
 Library/*
 
+.vs/*
 FTSources/.vs/*
 FTSources/FTEditor/obj/*
 FTSources/FTRuntime/obj/*
diff --git a/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipAssetPreview.cs b/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipAssetPreview.cs
index 8483de6..ca8b121 100644
--- a/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipAssetPreview.cs
+++ b/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipAssetPreview.cs
@@ -8,9 +8,9 @@ using FTRuntime;
 namespace FTEditor.Editors {
 	[CustomPreview(typeof(SwfClipAsset))]
 	class SwfClipAssetPreview : ObjectPreview {
-		int                          _sequence     = 0;
-		static MaterialPropertyBlock _matPropBlock = null;
-		static PreviewRenderUtility  _previewUtils = null;
+		int                   _sequence     = 0;
+		MaterialPropertyBlock _matPropBlock = null;
+		PreviewRenderUtility  _previewUtils = null;
 
 		Sprite targetSprite {
 			get {
@@ -142,6 +142,11 @@ namespace FTEditor.Editors {
 				: 0;
 		}
 
+        public void Shutdown() {
+            _matPropBlock.Clear();
+            _previewUtils.Cleanup();
+        }
+
 		// ---------------------------------------------------------------------
 		//
 		// Messages
diff --git a/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipEditor.cs b/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipEditor.cs
index 166f691..4f5c3d1 100644
--- a/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipEditor.cs
+++ b/Assets/FlashTools/Scripts/Editor/FTEditor/Editors/SwfClipEditor.cs
@@ -131,7 +131,7 @@ namespace FTEditor.Editors {
 		}
 
 		void SetupPreviews() {
-			_previews.Clear();
+            ShutdownPreviews();
 			foreach ( var clip in _clips.Where(p => !!p.clip) ) {
 				var preview = new SwfClipAssetPreview();
 				preview.Initialize(new Object[]{clip.clip});
@@ -139,18 +139,29 @@ namespace FTEditor.Editors {
 			}
 		}
 
-		// ---------------------------------------------------------------------
-		//
-		// Messages
-		//
-		// ---------------------------------------------------------------------
+        void ShutdownPreviews() {
+            foreach ( var p in _previews ) {
+                p.Value.Shutdown();
+            }
+            _previews.Clear();
+        }
 
-		void OnEnable() {
+        // ---------------------------------------------------------------------
+        //
+        // Messages
+        //
+        // ---------------------------------------------------------------------
+
+        void OnEnable() {
 			_clips = targets.OfType<SwfClip>().ToList();
 			SetupPreviews();
 		}
 
-		public override void OnInspectorGUI() {
+        void OnDisable() {
+            ShutdownPreviews();
+        }
+
+        public override void OnInspectorGUI() {
 			serializedObject.Update();
 			DrawDefaultInspector();
 			DrawSequence();