[ppenenko]

Agreed that the ability to just run on the CPU is valuable. Metashade doesn't support that yet and its codegen syntax doesn't look like regular Python code (everything codegen-related is prefixed with `sh.` etc.) but it's certainly possible to write a generator that would just execute the code "in the immediate mode" or generate C/C++ code for the CPU.

Regarding templating functions with functions - in Metashade you can just specialize the generated code however you see fit, with Python as the meta language. E.g. Python's `if` statements can act like `#ifdef`s or `if constexpr`, and you can certainly pass around callables to parameterize behavior.