compare to what I see in some demos, the doc ( readme here ) doesn't seem to be complete ! ;-)
E.g. what are o0 and o1 ?
What is b1 ? ( sounds like binding, but I don't see texture binding info in the app ).

Also, I see most people not initializing variables. Is the environment safely doing it, or will this break shaders on some systems as it does on Shadertoy ?

thanks !