DXGKETW_TRANSFERFLAGS structure

  • Article

Used in the DXGKETW_PAGINGOPERATION.Transfer.Flags member to identify the type of transfer operation to set up.

Syntax

typedef struct _DXGKETW_TRANSFERFLAGS {
  union {
    struct {
      ULONG Swizzle  :1;
      ULONG Unswizzle  :1;
      ULONG AllocationIsIdle  :1;
      ULONG TransferStart  :1;
      ULONG TransferEnd  :1;
      ULONG Reserved  :27;
    };
    ULONG  Value;
  };
} DXGKETW_TRANSFERFLAGS;

Members

  • Swizzle
    [in] Indicates whether the display miniport driver should swizzle the source to the destination during the transfer. Note that for multiple-level allocations (for example, MIP-map textures), the driver swizzles all levels of the allocations. For more information about swizzling allocations, see Locking Swizzled Allocations.

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

  • Unswizzle
    [in] Indicates whether the driver should unswizzle the source to the destination during the transfer. Note that for multiple-level allocations (for example, MIP-map textures), the driver unswizzles all levels of the allocations. For more information about swizzling allocations, see Locking Swizzled Allocations.

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

  • AllocationIsIdle
    [in] Indicates whether the graphics processing unit (GPU) is using the allocation that is referenced in the DXGKETW_PAGINGOPERATION.Transfer.Flags member. If this member is set, the GPU is not using the given allocation; that is, no work was queued or will be queued to the GPU until the transfer operation is completed.

    Setting this member is equivalent to setting the third bit of the 32-bit Value member (0x00000004).

  • TransferStart
    [in] Indicates whether the transfer operation is starting. If this member is set, the transfer operation is starting.

    Setting this member is equivalent to setting the fourth bit of the 32-bit Value member (0x00000008).

  • TransferEnd
    [in] Indicates whether the transfer operation is ending. If this member is set, the transfer operation is ending.

    Setting this member is equivalent to setting the fifth bit of the 32-bit Value member (0x00000010).

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

    Setting this member to zero is equivalent to setting the remaining 27 bits (0xFFFFFFE0) of the 32-bit Value member to zeros.

  • Value
    [in] A member in the union that DXGKETW_TRANSFERFLAGS contains that can hold a 32-bit value that identifies the transfer-operation type.

Remarks

The display miniport driver specifies these flags for the video memory manager, through the DXGK_TRANSFERFLAGS 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_TRANSFERFLAGS

DxgkDdiBuildPagingBuffer

DXGKETW_PAGINGOPERATION

 

 

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Build date: 7/11/2012