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DXGK_FEATURE_ID enumeration (d3dkmddi.h)

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A kernel-mode driver (KMD) calls DXGKCB_ISFEATUREENABLED with a DXGK_FEATURE_ID value to query whether the OS will allow it to enable support for that feature.

Syntax

typedef enum _DXGK_FEATURE_ID {
  DXGK_FEATURE_HWSCH = 0,
  DXGK_FEATURE_HWFLIPQUEUE = 1,
  DXGK_FEATURE_LDA_GPUPV = 2,
  DXGK_FEATURE_KMD_SIGNAL_CPU_EVENT = 3,
  DXGK_FEATURE_USER_MODE_SUBMISSION = 4,
  DXGK_FEATURE_SHARE_BACKING_STORE_WITH_KMD = 5
} DXGK_FEATURE_ID;

Constants

 
DXGK_FEATURE_HWSCH
Value: 0
Query whether to enable support for hardware-accelerated GPU scheduling.
DXGK_FEATURE_HWFLIPQUEUE
Value: 1
Query whether to enable support for the hardware flip queue feature. Available starting in Windows 11 (WDDM 3.0).
DXGK_FEATURE_LDA_GPUPV
Value: 2
Query whether to enable support for linked device adapter (LDA) in GPU paravirtualization (GPU_PV). Available starting in Windows 11 (WDDM 3.0).
DXGK_FEATURE_KMD_SIGNAL_CPU_EVENT
Value: 3
Query whether to enable support for signaling CPU events by KMD. Available starting in Windows 11 (WDDM 3.0).
DXGK_FEATURE_USER_MODE_SUBMISSION
Value: 4
Query whether to enable user-mode submissions. Available starting in Windows 11 version 22H2 (WDDM 3.1).
DXGK_FEATURE_SHARE_BACKING_STORE_WITH_KMD
Value: 5
Query whether to enable support to share the backing store with the KMD. Available starting in Windows 11 version 22H2 (WDDM 3.1).

Remarks

For each feature in this enumeration that the driver supports, the driver must do the following:

  • Call the OS to query the feature's enabled status.
  • Only enable the feature if the OS returned Enabled=TRUE.

Drivers that don't support the feature doesn't have to call the OS to query its status.

Requirements

Requirement Value
Minimum supported client Windows 10, version 1903
Header d3dkmddi.h

See also

DXGKARGCB_ISFEATUREENABLED

DXGKCB_ISFEATUREENABLED