Unity Engine documentationScript ReferenceUnityEditorTextureImporterFormatATC_RGB4Obsolete. Use TextureImporterFormat.ETC_RGB4 instead.Read time 1 minuteLast updated 8 days agoDefinition Type: Field Namespace: UnityEditor Assembly: UnityEditor.CoreModule WarningRemoved. Enum member ATC_RGB4 is obsolete. Use ETC_RGB4Upgrade to TextureImporterFormat.ETC_RGB4 ATC_RGB4 = 35