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
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 7 |
| Header | d3dkmddi.h (include D3dkmddi.h) |