TextureImporterFormat Format chosen by the system for the provided platform, TextureImporterFormat.Automatic if the platform does not exist.
Returns the TextureImporterFormat that would be automatically chosen for this platform.
The options for the platform string are "Standalone", "Web", "iPhone", "Android", "WebGL", "Windows Store Apps", "PS4", "PSM", "XboxOne", "Nintendo 3DS" and "tvOS".