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DXGK_PHYSICALADAPTERFLAGS structure (d3dkmddi.h)

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DXGK_PHYSICALADAPTERFLAGS defines a set of flags to indicate the type of memory management model supported by a device.

Syntax

typedef struct _DXGK_PHYSICALADAPTERFLAGS {
  union {
    struct {
      UINT IoMmuSupported : 1;
      UINT GpuMmuSupported : 1;
      UINT MovePagingSupported : 1;
      UINT VPRPagingContextRequired : 1;
      UINT AllowHardwareProtectedNoVpr : 1;
      UINT VirtualCopyEngineSupported : 1;
      UINT GpuVaIommuRequired : 1;
      UINT GpuVaIommuGlobalRequired : 1;
      UINT GpuVaIommuCacheCoherent : 1;
#if ...
      UINT Reserved : 23;
#elif
      UINT Reserved : 26;
#elif
      UINT Reserved : 27;
#elif
      UINT Reserved : 28;
#else
      UINT Reserved : 30;
#endif
    };
    UINT Value;
  };
} DXGK_PHYSICALADAPTERFLAGS;

Members

IoMmuSupported

Indicates that the CPU and GPU share a common address space and common page tables.

GpuMmuSupported

Indicates that the video memory manager manages the GPU memory management unit and underlying page tables to expose services to the user mode driver.

MovePagingSupported

Indicates that the device driver is capable of moving content to a new destination on the same memory segment.

VPRPagingContextRequired

Indicates that the device driver requires that move paging operations done within a Video Protected Region (VPR) occur on a different paging context than standard paging operations.

AllowHardwareProtectedNoVpr

Indicates that the hardware does not use a range-based VPR for hardware-protected surfaces, and instead uses allocation based hardware protection.

VirtualCopyEngineSupported

Indicates that the driver implements an emulated aperture segment and uses a virtualized hardware node to map and unmap the page tables for the aperture. Supported starting with Windows 10 version 2004.

GpuVaIommuRequired

GpuVaIommuGlobalRequired

GpuVaIommuCacheCoherent

Reserved

This member is reserved and should be set to zero.

Value

The consolidated value of the bitfield members in this structure.

Requirements

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