DXGK_HISTORY_BUFFER_HEADER structure (d3dkmddi.h)
Specifies how data is stored in a DXGK_HISTORY_BUFFER history buffer.
Syntax
typedef struct _DXGK_HISTORY_BUFFER_HEADER {
UINT32 RenderCbSequence;
UINT32 NumTimestamps;
UINT32 PrivateDataSize;
UINT32 Reserved;
} DXGK_HISTORY_BUFFER_HEADER;
Members
RenderCbSequence
The value of the D3DDDICB_RENDERFLAGS.Value member that is to be used in a call to the pfnRenderCb function.
The display miniport driver should compute this value and enter it into DXGK_HISTORY_BUFFER_HEADER before calling pfnRenderCb.
NumTimestamps
The number of time stamps that will be in the history buffer when the DMA buffer completes its execution.
The driver should include all time stamps that are logged, even if the buffer must be formatted before being logged to the Event Tracing for Windows (ETW) facility.
PrivateDataSize
The size, in bytes, of optional private data that the driver stores. The driver can use this data for any purpose.
If zero, the driver doesn't need to store private data in the history buffer.
Reserved
Reserved for system use and must be set to zero.
Remarks
Only the time stamp portion of the history buffer, along with the number of time stamps, will be logged to ETW. Header data and private driver data will not be logged to ETW as part of the time stamp buffer. However, parts of the header will be logged separately.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows 8.1,WDDM 1.3 and later |
Minimum supported server | Windows Server 2012 R2 |
Header | d3dkmddi.h (include D3dkmddi.h) |