The following DDIs were added to enable this feature: This is an essential feature that ensures that full screen games with game bar run at the same level of performance as on earlier versions of Windows. WDDM 2.1 drivers are required to support a performance feature called present batching, which adds multi-threading support for flip model swapchains. Windows 10 Anniversary edition includes improved ability to use the Windows game bar and GameDVR with full screen games. PFND3DDDI_UPDATEALLOCATIONPROPERTYCB callbackįor more information about offer and reclaim resources, see Offer and reclaim changes.As a result, the Process Lifetime Manager is able to reclaim more memory from background apps that use DirectX, which leads to less background application terminations when under memory pressure. This interface enables applications to offer resources that are acceptable to fully de-commit, when going into the background. The PFND3DDDI_RECLAIMALLOCATIONS3CB callback function was added to reduce memory footprint of applications running in background mode. WDDM 2.1 supports the following D3D versions: D3D9, D3D10, D3D10.1, D3D11, D3D11.x, D3D12 Offer and reclaim improvements HW protected content reliability improvementsĭriver store and side-by-side installationĭirectX memory surface sharing for camera/capture scenarios Support can be validated by Windows Hardware Lab Kit (HLK) tests, but Dxgkrnl checks for consistency in the capabilities and DDIs.
A driver that supports any of these capabilities must support all of the mandatory ones. If implemented, it is a collection of mandatory and optional driver capabilities. This topic provides details about features and enhancements in Windows Display Driver Model (WDDM) version 2.1, which is available starting with the Windows 10 Anniversary Edition (Windows 10, version 1607).
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