How to add FSR ray regeneration, FSR 4.1, and what mods are incompatible?

[degenerate-kun-69]

As the title says, im planning to use it on linux and wanted to ask how do i add FSR ray regen to it and fsr 4.1? because path tracing genuinely looks bad without a proper denoiser

[Noxtor7171]

FSR 4 isn't supported Vulkan for now, so, it's impossible(

[degenerate-kun-69]

isn't it there in optiscaler tho?

[Noxtor7171]

OptiScaler doesn't use a native Vulkan implementation of FSR 4. It uses a DX12 interop layer (FSR3.X/4 w/Dx12), meaning Vulkan calls are translated to a background DirectX 12 device, where FSR 4 runs. This workaround currently only works on Windows because Linux lacks the required DX12/Vulkan interoperability extensions. So you can't just use it on Linux like native Vulkan FSR.

[adina-the-nerd]

I'm really getting annoyed with AMD not making a Vulkan version

[adina-the-nerd]

isn't it there in optiscaler tho?

Yes and no. It only works with proton/wine & It changes API calls to be directX instead of Vulkan. Theoretically it's possible on Linux but would require special software that I don't know how to make and I'm willing to bet most people don't want to put in the work to make it.