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DXGKETW_MAPAPERTUREFLAGS structure

  • Article

Used in the DXGKETW_PAGINGOPERATION.MapApertureSegment.Flags member to identify the type of map-aperture-segment operation to set up.

Syntax

typedef struct _DXGKETW_MAPAPERTUREFLAGS {
  union {
    struct {
      ULONG CacheCoherent  :1;
      ULONG EvictionResource  :1;
      ULONG Reserved  :30;
    };
    ULONG  Value;
  };
} DXGKETW_MAPAPERTUREFLAGS;

Members

  • CacheCoherent
    [in] Indicates whether cache coherency is required for mapped pages. If this member is set, the display miniport driver must ensure that cache coherency is enforced on the pages that are mapped. If this member is not set, cache coherency is not required for the pages that are mapped.

    Setting this member is equivalent to setting the first bit of the 32-bit Value member (0x00000001).

  • EvictionResource
    [in] Indicates whether the resource can be evicted from memory. If this member is set, the driver must ensure that the resource can be evicted.

    Setting this member is equivalent to setting the second bit of the 32-bit Value member (0x00000002).

  • Reserved
    [in] Reserved for system use and should be set to zero.

    Setting this member to zero is equivalent to setting the remaining 30 bits (0xFFFFFFFC) of the 32-bit Value member to zeros.

  • Value
    [in] A member in the union that DXGKETW_MAPAPERTUREFLAGS contains that can hold a 32-bit value that identifies the type of map-aperture-segmentoperation.

Remarks

The display miniport driver specifies these flags for the video memory manager, through the DXGK_MAPAPERTUREFLAGS structure, in response to a call to the DxgkDdiBuildPagingBuffer function.

Requirements

Minimum supported client

 Windows 8 Release Preview

Minimum supported server

 Windows Server 2012

Header

 Dxetwevt.h (include Dxetwevt.h)

See also

DXGK_MAPAPERTUREFLAGS

DxgkDdiBuildPagingBuffer

DXGKETW_PAGINGOPERATION

 

 

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Build date: 7/11/2012