Available since: Gideros 2021.9
Asynchronously loads a TexturePack object. This function loads the pre-packed texture atlas created by "Gideros Texture Packer" tool.
callback: (function) the function will be called with the Texture object as argument or an error as second argument
txtfile: (string) "Gideros Texture Packer" text file path
imagefile: (string) "Gideros Texture Packer" image file path
filtering: (boolean, default = false) whether or not the texture is filtered, that is smoothing the image optional
options: (table) a table that specifies optional parameters optional. Currently, "transparentColor" and "format" fields are supported