Not against emulation for Switch 2 here. But just accept it as pretty much impossible outside of extremely few SKUs of PCs, if ever.
Switch 2's unique functions with the File-Decompression Unit, how different the RT cores are to AMD's Ray Accelerators, and the big factor that are Tensor Cores make it pretty much impossible to viably emulate Switch 2 off prospect.
- GPU Shader Emulation?
- The GPU is going to stretch well past the ROG Ally/Steam Deck docked. What GPU could emulate that at an efficient speed?
- Translation as a soluiton?
- Only would work on RTX 3000 and 4000 Cards because they'd share the most similar core ISA.
- And even then it may be RTX 4000 only if Frame Generation is usable on Switch 2. And considering RTX 5000 is altering the shaders radically based on rumors. Yeah.
- RT Cores?
- Sure, it may be able to get abstracted to VulkanRT, but it'd likely be intolerably slow on AMD due to the benefits of NVIDIA's RT being made even more prevalent once developers can optimize for it.
- Tensor Cores?
- No real way to account for these, they are fixed function and extremely fast at what they do. Not to mention DLSS is pretty locked down, and Ray Reconstruction is pretty much impossible to do without Tensor Cores.
- The only Theoretical alternative may be Intel Arc GPUs? and even then you'd need to find a way to do the impossible and get DLSS running on XMX units.
- Disabling/swapping out DLSS?
- Any game that deploys DLSS likely will have it as a major function in it's rendering pipeline so you're be neutering the presentation by disabling it.
- And even then, Disabling or swapping out DLSS with XeSS or FSR would require modding EVERY INDIVIDUAL GAME that uses it.
- And then if a game uses Ray Reconstruction for RT. That makes any idea of FSR2/XeSS Injection a no-go as the game would have NO DENOISER for the Ray Tracing without RR as why would a developer leave a standard big denoiser wasting space if they are using Ray Reconstruction?
So yeah, Switch 2 Emulation would either be an extremely exclusive club, or virtually (and very much practically) impossible.