I said AMD is not building an ENTIRE MICRO-ARCHITECTURE OR GPU CLASS for Sony. And they are not.
I think someone needs a hug.
I mean isn't the easier read here that they aren't using RDNA 2.0 and DirectX RT? I've said before that I have a feeling Sony went with RDNA 1.0 because they didn't like the AMD RT solution and MS went with it and incorporated DX RT aggressively in it. It's why we don't see RT in Github.
The real question that comes out of that situation is which RT solution becomes easier to use Direct X or a custom one?
My take home too. The tweet at least strongly suggests PS5 isn't using RDNA2 RT solution for the "hardware accelerated RT" Cerny was talking about.
Like you say also makes the Oberon leaks make more sense.
So XSX is 12TF RDNA2 while PS5 is potentially 9.2TF RDNA + some kind of custom RT core/solution.
This also could mean that GitHub and Klee, Schrier etc are right - that they are very close to each other when it comes to actual performance. That the 12TF XSX GPU is doing rasterisation AND ray tracing while the 9.2TF PS5 GPU is simply rasterising and leaving the RT up to the custom solution, resulting in very similar performance.
It would certainly be interesting.