AMD reportedly announced on October 20, 2026, that FSR SDK 2.4 is planned to add Vulkan support for developers. AMD was reported to expect the SDK in the coming weeks, but existing games will need studio integration and updates before they can use the new path.
An SDK, or software development kit, gives game developers tools to add a feature to their games. Vulkan is a graphics API, the interface a game uses to communicate with a graphics processor. The reported plan therefore points to game-by-game work, not a switch players can turn on through a driver update.
Why existing games need updates
A studio must integrate the SDK into a game and release an update for that title. The SDK plan by itself does not add Vulkan support to games already installed on a player’s PC.
How the FSR routes differ
FSR 3.1 was reported to support both Vulkan and DirectX 12. AMD GPUOpen documented a separate FSR 4 driver-upgrade option for supported DirectX 12 games that use a signed FSR 3.1 DLL; that driver path excludes Vulkan titles.
| FSR route | API and requirements | What it means for a Vulkan game |
| FSR 3.1 | Vulkan and DirectX 12 support was reported. | A game can use it when its developers integrate the version. |
| FSR 4 driver-upgrade option | Supported DirectX 12 game with a signed FSR 3.1 DLL; Vulkan titles are excluded. | This driver-upgrade path does not enable FSR 4 in a Vulkan title. |
| Planned FSR SDK 2.4 support | Vulkan support planned for developers. | The studio must integrate the SDK and update its game. |
| OptiScaler workaround | Unofficial Vulkan route using a DirectX 12 translation layer. | A community workaround was demonstrated, separate from AMD’s SDK plan. |
The distinction matters for players waiting on a specific title: an API-level SDK gives studios a route to implement support, while the driver-upgrade option has its own DirectX 12 and signed-DLL requirements. Neither means every Vulkan game gains FSR 4 automatically.
An unofficial workaround was demonstrated
Before the reported SDK plan, Ancient Gameplays demonstrated an OptiScaler setup for running FSR 4 in Vulkan games. The walkthrough shows installation and gameplay in Doom: The Dark Ages and Indiana Jones and the Great Circle on an AMD Radeon RX 9070 XT. It is a community workaround, not AMD’s native SDK integration.
The reported announcement concerns Vulkan support through the developer SDK. Vulkan support alone is not a Linux or Steam Deck compatibility announcement, and the reports did not identify which individual FSR components the SDK will cover.
