[Unity Notes] how to change the compression format of resources corresponding to Texture2D in Unity Editor, and save it, unitytexture2d

[Unity Notes] how to change the compression format of resources corresponding to Texture2D in Unity Editor, and save it, unitytexture2d

There were a lot of pitfalls (almost one afternoon) about storage ). Here is an additional description. If it is only used for the next time, you can use the UnityEditor. compressTexture method to modify the compression format, but this method is restored after the project is re-opened.

 

To modify the Format of Texture2D, you must modify ImportSettings in Texture2D and the TextureImporterFormat. The Code is as follows:

  Texture2D t2D = (Texture2D) AssetDatabase.LoadAssetAtPath(t2D_path, typeof(Texture2D));

  TextureImporter ti = (TextureImporter)TextureImporter.GetAtPath(AssetDatabase.GetAssetPath(t2D));  ti.textureFormat = changeTextureImporterFormat;

A t2D object is a read-in Texture2D object. For details about TextureImporterFormat, refer to the official Unity api. The link is as follows:

Http://docs.unity3d.com/ScriptReference/TextureImporterFormat.html

After ImporterFormat is changed, be sure to re-Import Texture2D !! Otherwise, the format conversion cannot be saved. Even if it is correct at the time, the changes will be restored after the project is re-opened. The re-Import method is as follows:

AssetDatabase.ImportAsset(AssetDatabase.GetAssetPath(t2D));

In this way, the compression format is changed and the project will not be restored after it is re-opened.

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