// d3dkmddi.h

typedef struct _DXGK_DISPLAY_DRIVERCAPS_EXTENSION {
  union {
    struct {
      UINT SecureDisplaySupport : 1;
      UINT VirtualModeSupport : 1;
#if ...
      UINT Reserved : 29;
      UINT NonSpecificPrimarySupport : 1;
      UINT HdrFP16ScanoutSupport : 1;
      UINT HdrARGB10ScanoutSupport : 1;
      UINT Hdr10MetadataSupport : 1;
      UINT VirtualRefreshRateSupport : 1;
      UINT SupportUsb4Targets : 1;
#elif
      UINT Reserved : 25;
#elif
      UINT Reserved : 26;
#elif
      UINT Reserved : 27;
#elif
      UINT Reserved : 28;
#else
      UINT Reserved : 30;
#endif
    };
    UINT Value;
  };
} DXGK_DISPLAY_DRIVERCAPS_EXTENSION;
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (ns-d3dkmddi-_dxgk_display_drivercaps_extension)

DXGK_DISPLAY_DRIVERCAPS_EXTENSION structure

Description

The DXGK_DISPLAY_DRIVERCAPS_EXTENSION structure specifies driver capabilities for WDDM 2.0 and later drivers. The OS queries these capabilities at start time.

Members

`SecureDisplaySupport`

Indicates that the miniport supports secure display connection.

`VirtualModeSupport`

Indicates the virtual display mode support.

`NonSpecificPrimarySupport`

Indicates non-specific primary support.

`HdrFP16ScanoutSupport`

HDR pixel format scanout capability support.

`HdrARGB10ScanoutSupport`

The display is HDR capable.

`Hdr10MetadataSupport`

The driver supports HDR10 metadata. Available starting in Windows 10 version 2004 (WDDM 2.7).

`VirtualRefreshRateSupport`

Indicates that the driver supports virtual refresh rate. Available starting in Windows Server 2022 (WDDM 2.9).

`SupportUsb4Targets`

Indicates that the driver supports USB4 targets. Available starting in Windows 11 (WDDM 3.0).

`Reserved`

Reserved.

`Value`

An alternative way to access the structure bit fields.

View the official Windows Driver Kit DDI reference

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