fix: crash caused by g_ThreadedGfxDevice after deserialization (#60)

* Fix crash caused by performing graphics operation when g_ThreadedGfxDevice is not ready after deserialization.
* Update package version

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+## [0.1.3-preview] - 2020-04-15
+* fix: crash caused by performing graphics operation when g_ThreadedGfxDevice is not ready after deserialization	
+
 ## [0.1.2-preview] - 2020-04-14
 * fix: errors caused by StreamingImageSequenceTrack::GetActivePlayableAsset() when TimelineWindow is not in focus
 * fix: keep processing StreamingImageSequencePlayableAsset even if there is no bound GameObject in the track, as the output texture is still required

Runtime/PlayableAssets/StreamingImageSequence/StreamingImageSequencePlayableAsset.cs

@@ -19,7 +19,7 @@ namespace UnityEngine.StreamingImageSequence {
     /// </summary>
     [System.Serializable]
     public class StreamingImageSequencePlayableAsset : PlayableAsset, ITimelineClipAsset
-                                                     , IPlayableBehaviour, ISerializationCallbackReceiver 
+                                                     , IPlayableBehaviour
     {      
 //----------------------------------------------------------------------------------------------------------------------
 #region IPlayableBehaviour interfaces
@@ -236,6 +236,8 @@ internal int LocalTimeToImageIndex(double localTime) {
 
         internal int GetVersion() { return m_version; }
         internal IList<string> GetImagePaths() { return m_imagePaths; }
+
+        //May return uninitialized value during initialization because the resolution hasn't been updated
         internal ImageDimensionInt GetResolution() { return m_resolution; }
         internal System.Collections.IList GetImagePathsNonGeneric() { return m_imagePaths; }
         internal TimelineClip GetTimelineClip() { return m_timelineClip; }
@@ -637,20 +639,6 @@ void ForceUpdateResolution() {
         internal void OnAfterTrackDeserialize(TimelineClip clip) {
             SetTimelineClip(clip);
         }
-
-//----------------------------------------------------------------------------------------------------------------------
-
-#region ISerializationCallbackReceiver implementation
-        /// <inheritdoc/>
-        public void OnBeforeSerialize() {
-        }
-
-        /// <inheritdoc/>
-        public void OnAfterDeserialize() {
-            ForceUpdateResolution();
-        }
-#endregion
-
 
 //----------------------------------------------------------------------------------------------------------------------
         internal void ResetAnimationCurve() {

package.json

@@ -2,7 +2,7 @@
     "displayName": "Streaming Image Sequence",
     "name": "com.unity.streaming-image-sequence",
     "unity": "2019.2",
-    "version": "0.1.2-preview",
+    "version": "0.1.3-preview",
     "dependencies": {
       "com.unity.timeline": "1.2.14"
     },