This tiered structure allows games to support multiple graphics backends while sharing common logic.
: Using a modified version of this DLL in online games can trigger anti-cheat bans (like Easy Anti-Cheat or BattlEye). 🔍 Technical Requirements Architecture : x86-64 (64-bit systems only). API : Vulkan 1.2 or higher.
Submit the dispatch description to recording. FSR 2 will append the necessary compute shader dispatches into your active Vulkan command buffer. ffxFsr2ContextDispatch(&fsr2Context, &dispatchDesc); Use code with caution. Troubleshooting Common Issues Probable Cause Resolution Failed to pass standard vkDeviceGetProcAddr pointer.
: It returns a sharpened, upscaled image to the game's swapchain for display. ⚠️ Common Issues & Fixes 1. Missing DLL Errors ffx fsr2 api vk x64dll work
: Contains the platform-agnostic, core temporal upscaling logic.
To help narrow down the implementation details, please let me know:
FSR 2's performance impact varies based on resolution, quality preset, and hardware. The algorithm's cost is primarily in compute shader execution—temporal accumulation, depth reconstruction, and Lanczos-based upscaling. On modern GPUs, the overhead is typically minimal (1-2ms at 4K output), making it suitable for real-time applications. This tiered structure allows games to support multiple
Since FSR 2 is a GPU technology, ensuring your Vulkan drivers are up to date is crucial. Download the latest AMD Adrenalin or NVIDIA GeForce drivers. 3. Place the DLL in the Correct Folder
It is worth noting that while FSR 2 is a mature and widely adopted technology, AMD has since released (which includes frame generation) and FSR 4 . The latest version (FSR 4) effectively supersedes FSR 3, integrating FSR 2 and FSR 3 and falling back to FSR 3.1.5 where necessary.
Before analyzing the file itself, it's helpful to recap what FSR 2 does. AMD FidelityFX Super Resolution 2 (FSR 2) is a . This means it works by analyzing and combining data from multiple frames to reconstruct high-resolution imagery from a lower-resolution input. It uses advanced temporal algorithms to reconstruct fine geometric and texture detail, producing anti-aliased output from aliased input. This process yields higher image quality and performance than traditional spatial upscaling methods, such as the original FSR 1. API : Vulkan 1
You need to verify the entry points. Use a tool like Dependency Walker on the DLL.
The ffx_fsr2_api_vk_x64.dll file is also relevant in the context of game shimming—replacing or intercepting DLL calls to modify game behavior. Tools like OptiScaler hook into the FFX API at the DLL boundary, enabling developers to swap upscaling backends (e.g., redirecting DLSS calls to FSR 2 or vice versa) without modifying the game executable.
If the DLL is designed as a custom Vulkan layer (common in advanced modding frameworks):
FfxFsr2DispatchDescription dispatchDesc = {}; dispatchDesc.commandList = ffxGetCommandListVK(vkCommandBuffer); // Register your Vulkan images dispatchDesc.color = ffxGetResourceVK(&fsr2Context, vkColorImage, vkColorImageView, renderWidth, renderHeight, VK_FORMAT_R16G16B16A16_SFLOAT, L"FSR2_InputColor"); dispatchDesc.depth = ffxGetResourceVK(&fsr2Context, vkDepthImage, vkDepthImageView, renderWidth, renderHeight, VK_FORMAT_D32_SFLOAT, L"FSR2_InputDepth"); dispatchDesc.motionVectors = ffxGetResourceVK(&fsr2Context, vkMVImage, vkMVImageView, renderWidth, renderHeight, VK_FORMAT_R16G16_SFLOAT, L"FSR2_InputMotionVectors"); dispatchDesc.output = ffxGetResourceVK(&fsr2Context, vkOutputImage, vkOutputImageView, displayWidth, displayHeight, VK_FORMAT_R8G8B8A8_UNORM, L"FSR2_OutputColor"); // Pass camera matrices and temporal parameters dispatchDesc.jitterOffset.x = jitterX; dispatchDesc.jitterOffset.y = jitterY; dispatchDesc.motionVectorScale.x = (float)renderWidth; dispatchDesc.motionVectorScale.y = (float)renderHeight; dispatchDesc.frameTimeDelta = deltaTimeInMilliseconds; dispatchDesc.cameraNear = cameraNearPlane; dispatchDesc.cameraFar = cameraFarPlane; dispatchDesc.cameraFovAngleVertical = fovRadians; Use code with caution. 4. Frame Execution