// d3dkmddi.h

typedef struct _DXGKARG_SETINTERRUPTTARGETPRESENTID {
  D3DDDI_VIDEO_PRESENT_SOURCE_ID VidPnSourceId;
  UINT                           LayerIndex;
  ULONGLONG                      InterruptTargetPresentId;
} DXGKARG_SETINTERRUPTTARGETPRESENTID;
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Windows Driver Kit DDI reference (ns-d3dkmddi-dxgkarg_setinterrupttargetpresentid)

Description

The DXGKARG_SETINTERRUPTTARGETPRESENTID structure contains parameters for the driver's DXGKDDI_SETINTERRUPTTARGETPRESENTID callback function.

Members

`VidPnSourceId`

[in] A D3DDDI_VIDEO_PRESENT_SOURCE_ID value that identifies the VidPn source ID of the hardware flip queue.

`LayerIndex`

[in] A zero-based index value that identifies the MPO plane index of the flip queue.

`InterruptTargetPresentId`

[in] Value that identifies the PresentId that is required to raise a corresponding VSync or HSync interrupt when it's completed. InterruptTargetPresentId can be one of the following values:

Value	Meaning
UINT64_MAX	No VSync interrupt is required going forward until the target present ID is changed again.
0	VSync interrupts are required for every interval regardless of whether any new flips are completed.
Any other value	Interrupts are raised if the currently scanned PresentId >= InterruptTargetPresentId.

Remarks

See Specifying Vsync interrupt behavior for more information.

DXGKARG_SETINTERRUPTTARGETPRESENTID - NtDoc