Some games, like Cyberpunk 2077 , Red Dead Redemption 2 , and Baldur's Gate 3 , have native support for Nvidia's DLSS (Deep Learning Super Sampling). For gamers on AMD or older Nvidia cards, this is frustrating. However, the open-source nature of FSR2 has led to the creation of mods (like "FSR2BG3" or "CyberFSR2") that "trick" the game. These mods replace the DLSS DLL files (like nvngx.dll ) with their own modified versions, which then load the ffx_fsr2_api_vk_x64.dll to inject FSR2 into the game's render pipeline [0†L17-L20][0†L22-L26].

When a game developer wants to add FSR2 to their Vulkan game, they don't directly link the FSR2 algorithm to Vulkan. Instead, they use the ffxGetInterfaceVK function. This function creates a "backend context" which handles all the low-level Vulkan calls needed to run FSR2 (like creating command buffers, binding shaders, and managing GPU memory) [7†L17-L19].

If you want, I can:

: Since the DLL relies on Vulkan, ensuring your GPU drivers (AMD or NVIDIA) are up to date is crucial to avoid compatibility errors .

When a game utilizes Vulkan (such as Doom Eternal , No Man's Sky , or Baldur's Gate 3 via its Vulkan executable), this specific DLL tells the graphics card exactly how to allocate memory resources to run the upscaling pipeline without crashing the application. Common Use Cases and Community Modifications

The Vulkan backend for FSR 2 requires explicit mapping of Vulkan handles and procedure addresses. In practice, developers using Rust bindings would interact with FSR 2 through crates that provide safe abstractions, but under the hood, the Vulkan backend expects dynamic linking of Vulkan functions.

Are you integrating this into your , or trying to mod an existing game ?

This article breaks down what all these terms mean, how they come together to form a "super resolution" system, and why the interaction of these components is so important for the future of gaming graphics.