TextureAtlasBuilder: Return unplaced textures instead of failing #23158
Description
What problem does this solve or what need does it fill?
TextureAtlasBuilder either places all the images it was given within an atlas of the given max_size or it fails and does nothing. There's no support for partial completion/failure.
What solution would you like?
Add an option so that if TextureAtlasBuilder::build fails to fit all images into a single max_size atlas texture, it returns an atlas containing the images that were successfully placed, along with a list of the unplaced images.