Ah I’m glad it ended up being fruitful then. To your question, consider that console games ship precompiled shader libraries that target the known GPU of that

Ah I’m glad it ended up being fruitful then. To your question, consider that console games ship precompiled shader libraries that target the known GPU of that console. This prevents shader compile hitches etc. So the PS5 is effectively a superset of the PS4, with a significant new set of capabilities. There’s no opportunity to take an intermediate language like Proton etc does to transpile it first.