// d3dkmddi.h

typedef struct _DXGK_FLIPQUEUE_LOG_ENTRY {
  ULONGLONG PresentId;
  ULONGLONG PresentTimestamp;
} DXGK_FLIPQUEUE_LOG_ENTRY;
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Windows Driver Kit DDI reference (ns-d3dkmddi-dxgk_flipqueue_log_entry)

Description

In the hardware flip queue model, the DXGK_FLIPQUEUE_LOG_ENTRY structure contains a single flip queue log entry for a completed or cancelled flip.

Members

`PresentId`

[in] Identifies the completed or cancelled flip.

`PresentTimestamp`

[in] Time stamp of the flip. This value is specified in CPU clock counter units (obtained from obtained from KeQueryPerformanceCounter). PresentTimestamp can be one of the following values:

Value	Meaning
DXGK_HWFLIPQUEUE_TIMESTAMP_CANCELLED	The flip was cancelled and contents were never displayed on the screen.
Value > 0	The time stamp when the flip started being visible on the screen; that is, the scanout's start time.

Remarks

The DXGKARG_SETFLIPQUEUELOGBUFFER structure contains a pointer to an array of DXGK_FLIPQUEUE_LOG_ENTRY structures.

DXGK_FLIPQUEUE_LOG_ENTRY - NtDoc