using System.Collections;
using System.Collections.Generic;
using UnityEditor;
using UnityEngine;

public class PremultplyTextureContext : Editor {

    [MenuItem("Assets/PremultplyTexture")]
    public static void onpremultiplycontext()
    {
        foreach (Object obj in Selection.objects)
        { 
            Texture2D tex = obj as Texture2D;

            Debug.Log("Premultiplyed :" + tex.name);
            string path = AssetDatabase.GetAssetPath(tex);
            
            Texture2D texOut = TextureConverter.ConvertToPremultipliedAlpha(tex);

            byte[] data = texOut.EncodeToPNG();

            System.IO.File.WriteAllBytes(path, data);            
        }
        AssetDatabase.Refresh();
    }

    [MenuItem("Assets/PremultplyTexture",true)]
    public static bool checkpremultiplycontext()
    {
        bool returnValue = true;
        foreach (Object obj in Selection.objects)
        {
            if (!(obj is Texture2D)) returnValue = false;
        }

        return returnValue;
    }
}