Editor Serialization

Question

I'm building an editor component and have run into a real snag - when creating Texture2D's dynamically they do not appear to support serialization. I've tried following the directions at: http://blogs.unity3d.com/2012/10/25/unity-serialization and this works if and only if I replace the MakeTexture() call with EditorGUIUtility.whiteTexture - which is a Texture2D! So something is happening under the covers here and I'm not sure what.

My question - what can I do to ensure a created texture is serialized properly so that it stays around between runs?

 using System;
 using UnityEditor;
 using UnityEngine;
 
 [Serializable]
 public class TestSer
 {
     [SerializeField]
     public string m_Name;
 
     [SerializeField]
     private int m_Value;
     
     [SerializeField]
     public Texture2D m_Texture;
 
     public TestSer ()
     {
         m_Name = "chris";
         m_Value = 5;
         m_Texture = MakeTexture( Color.red );
     }
     
     private Texture2D MakeTexture( Color col )
     {
         Texture2D result = new Texture2D( 1, 1 );
         result.SetPixels( new Color[ ] { col } );
         result.Apply();
         return result;
     }        
 }

Answer 1

Best Answer

Answer by Loius · Apr 03, 2013 at 07:00 AM

I believe you need to create and save an asset to keep asset-type references around in edit mode or between play and edit mode.

This is what I used to build persistent meshes in edit mode; just replace Mesh with Texture2D and it should be a pretty good guide for keeping them around. You'll want to set your m_Texture to the result of LoadAssetAtPath after saving it, I believe.

         var assetName : String = meshName + ".asset";
         var m : Mesh = AssetDatabase.LoadAssetAtPath("Assets/Meshes/" + assetName,Mesh) as Mesh;
         if ( m && overwrite ) {
             AssetDatabase.DeleteAsset("Assets/Meshes/"+assetName);
             m = null;
         }
 
         ...
 
             AssetDatabase.CreateAsset(m, "Assets/Meshes/" + assetName);
             AssetDatabase.SaveAssets();

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Lypheus · Apr 04, 2013 at 01:53 AM 0

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Thanks Louis, I ended up getting serialization to work finally, the $$anonymous$$akeTexture() method does not create a serializable Texture2D, so ins$$anonymous$$d I created prebuilt texture2d's under a Resources folder and used LoadResource, but your approach would work great for dynamically created content which is what i was after - ty!

Editor Serialization

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