If you are searching for how to make this DLL work, you are likely encountering one of three scenarios:
At its core, the x64dll is a Dynamic Link Library. In the context of FSR 2 for Vulkan, this file typically bears names like:
This DLL acts as the bridge between your game’s renderer and AMD’s FSR 2 algorithm. It contains:
| Component | Description | Relevance |
|-----------|-------------|------------|
| FFX | AMD FidelityFX SDK | Core framework for FSR2 |
| FSR2 | Temporal upscaling algorithm (Frame Super Resolution v2) | Requires motion vectors, depth, color buffers |
| API: VK | Vulkan Graphics API | Low-overhead, cross-platform; different memory/handling vs D3D12 |
| x64 DLL | 64-bit Dynamic Link Library | Likely ffx_fsr2_vk.x64.dll or similar | ffx fsr2 api vk x64dll work
Report ID: FFX-FSR2-VK-2024-01 Date: [Current Date] Status: Analysis / Troubleshooting
Users often replace the stock FSR2 file with an updated version from the AMD FSR2 Sample repository (GitHub). However, simply dropping ffx_fsr2_api_vk_x64.dll into a game folder only works if the game’s main executable actually calls its exports.
The Fix: You need to verify the entry points. Use a tool like Dependency Walker on the DLL. If you are searching for how to make
Based on the input, the following are common failure points:
Entry Point Not Found:
Bitness Mismatch:
Vulkan Specific Errors:
On Linux, Windows DirectX 12 games run via VKD3D-Proton, which translates DX12 calls to Vulkan. Some mods inject a native Vulkan FSR2 DLL. The conflict arises when the game expects DX12 FSR2, but the mod forces vk_x64.
The Workaround: Proton has a DLL_OVERRIDES feature. To force the Vulkan DLL to work, you must set:
WINEDLLOVERRIDES="ffx_fsr2_api_vk_x64=n,b" %command%
The n,b flag ensures the native Linux Vulkan DLL loads instead of the built-in Windows one. This DLL acts as the bridge between your