DXGKARG_QUERYVIDPNHWCAPABILITY structure (d3dkmddi.h)

The DXGKARG_QUERYVIDPNHWCAPABILITY structure is used by the display miniport driver to describe the hardware capabilities of a functional VidPN in response to a call to the DxgkDdiQueryVidPnHWCapability function.

Syntax

typedef struct _DXGKARG_QUERYVIDPNHWCAPABILITY {
  [in]  IN D3DKMDT_HVIDPN                 hFunctionalVidPn;
  [in]  IN D3DDDI_VIDEO_PRESENT_SOURCE_ID SourceId;
  [in]  IN D3DDDI_VIDEO_PRESENT_TARGET_ID TargetId;
  [out] OUT D3DKMDT_VIDPN_HW_CAPABILITY   VidPnHWCaps;
} DXGKARG_QUERYVIDPNHWCAPABILITY;

Members

[in] hFunctionalVidPn

A handle to a functional VidPN object for which the hardware capabilities are being queried.

[in] SourceId

An integer that identifies a video present source on the display adapter.

[in] TargetId

An integer that identifies a video present target on the display adapter.

[out] VidPnHWCaps

A D3DKMDT_VIDPN_HW_CAPABILITY structure that describes the capabilities of the display miniport driver to perform display operations without dedicated GPU hardware support.

Remarks

The D3DDDI_VIDEO_PRESENT_SOURCE_ID and D3DDDI_VIDEO_PRESENT_TARGET_ID data types are defined in D3dukmdt.h.

Video present source identifiers are assigned by the operating system. DxgkDdiStartDevice, implemented by the display miniport driver, returns the number N of video present sources supported by the display adapter. Then the operating system assigns identifiers 0, 1, 2, ... N - 1.

Video present target identifiers are assigned by the display miniport driver. DxgkDdiQueryChildRelations, implemented by the display miniport driver, returns an array of DXGK_CHILD_DESCRIPTOR structures, each of which contains an identifier.

For more information about video present sources and targets, see Introduction to Video Present Networks.

Requirements

See also

D3DKMDT_VIDEO_PRESENT_SOURCE

D3DKMDT_VIDEO_PRESENT_TARGET

D3DKMDT_VIDPN_HW_CAPABILITY

D3DKMDT_VIDPN_PRESENT_PATH

DXGK_CHILD_DESCRIPTOR

DxgkDdiQueryChildRelations

DxgkDdiQueryVidPnHWCapability

DxgkDdiStartDevice