I know, AGG is just a set of primitives but not an abstraction like class Graphics {...}. But that one can be assembled from them. Did it once for early version

I know, AGG is just a set of primitives but not an abstraction like class Graphics {...}. But that one can be assembled from them. Did it once for early versions of Sciter. Ideally GPU and CPU rendering backends should have pixel perfect match that makes "adding new 2D backend" tricky at best.