importer.GetNPOTScale() == TextureImporter::kNPOTKeep
UnityEditor.AssetDatabase:ImportAsset(String, ImportAssetOptions)
NGUIEditorTools:MakeTextureAnAtlas(String, Boolean, Boolean) (at Assets/NGUI/Scripts/Editor/NGUIEditorTools.cs:489)
NGUIEditorTools:ImportTexture(String, Boolean, Boolean, Boolean) (at Assets/NGUI/Scripts/Editor/NGUIEditorTools.cs:503)
NGUIEditorTools:ImportTexture(Texture, Boolean, Boolean, Boolean) (at Assets/NGUI/Scripts/Editor/NGUIEditorTools.cs:522)
UIAtlasMaker:ExtractSprites(UIAtlas, List`1) (at Assets/NGUI/Scripts/Editor/UIAtlasMaker.cs:555)
UIAtlasMaker:UpdateAtlas(List`1, Boolean) (at Assets/NGUI/Scripts/Editor/UIAtlasMaker.cs:687)
UIAtlasMaker:OnGUI() (at Assets/NGUI/Scripts/Editor/UIAtlasMaker.cs:1055)
UnityEditor.DockArea:OnGUI()