MipmapGenerator depends on a compiled compute shader under content_dir ++ "shaders/generate_mipmaps.cs.cso"

That file is build time compiled in each sample:

Second, content_dir is a sample concept that libs should not have.

Related to this I find it awkward a lib would directly load from the filesystem instead of be given the bytes. By allowing the caller to pass in the bytes, it can decide to either:

1. load it from the filesystem
2. compile it at runtime
3. already have loaded via @embedFile