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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.
Syntax
typedef struct _DXGK_FLIPQUEUE_LOG_ENTRY {
ULONGLONG PresentId;
ULONGLONG PresentTimestamp;
} DXGK_FLIPQUEUE_LOG_ENTRY;
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.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 11 (WDDM 3.0) |
| Header | d3dkmddi.h |