Seems they didn’t learn from the PS3, and that exotic architectures don't drive sales. Gamers don’t give a shit and devs won’t choose it unless they have a lucrative first party contract.
The entire Switch 1 game library is free to play on emulators. They probably put a custom accelerator to prevent reverse engineering. A consequence of using weaker spec parts than their competitors.
The Switch 1 also had CUDA cores and other basic hardware accelerators. To my knowledge (and I could be wrong), none of the APIs that Nintendo exposed even gave access to those fancy features. It should just be calls to NVN, which can be compiled into Vulkan the same way DXVK translates DirectX calls.
TL:DW - it's not quite the full-fat CNN model but it's also not a uselessly pared-back upscaler. Seems to handle antialiasing and simple upscale well at super low TDPs (<10w).
In this video, Alex goes in-depth on Switch 2 DLSS, confirming that there are actually two different forms of the technology available - the DLSS we know from PC gaming and a faster, far more simplified version.
Seems they didn’t learn from the PS3, and that exotic architectures don't drive sales. Gamers don’t give a shit and devs won’t choose it unless they have a lucrative first party contract.