DXGK_QUERYSEGMENTOUT4 structure (d3dkmddi.h)

The DXGK_QUERYSEGMENTOUT4 structure contains memory segment information returned from the driver.

Syntax

typedef struct _DXGK_QUERYSEGMENTOUT4 {
  UINT   NbSegment;
  BYTE   *pSegmentDescriptor;
  UINT   PagingBufferSegmentId;
  UINT   PagingBufferSize;
  UINT   PagingBufferPrivateDataSize;
  SIZE_T SegmentDescriptorStride;
} DXGK_QUERYSEGMENTOUT4;

Members

NbSegment

Number of elements in the pSegmentDescriptor array. The DxgkDdiQueryAdapterInfo (DXGKQAITYPE_QUERYSEGMENT4) will be called twice. First time, NbSegment will be set to 0. The driver should return STATUS_SUCCESS and set NbSegment to the number of GPU memory segments in the adapter without accessing any other member of the structure. Second time, the driver will be called with the reported number of segments and the driver should fill all required information.

pSegmentDescriptor

Pointer to the array of DXGK_SEGMENTDESCRIPTOR4 structures. The size of the array element is defined by SegmentDescriptorStride. The pSegmentDescriptor type has been changed to a BYTE* to help enforce the use of the stride as the method of iterating the array. The driver fills the array with information about each memory segment.

PagingBufferSegmentId

Segment identifier of the paging buffer. This is the index (starting from 1) of the segment in the pSegmentDescriptor array.

PagingBufferSize

Paging buffer size.

PagingBufferPrivateDataSize

Size, in bytes, of the driver-private data that will be provided with each paging buffer.

SegmentDescriptorStride

Size of the elements in the pSegmentDescriptor array in bytes.

Requirements

Requirement	Value
Minimum supported client	Windows 10
Minimum supported server	Windows Server 2016
Header	d3dkmddi.h (include D3dkmddi.h)

See also

DXGK_QUERYSEGMENTIN4