DXGKARGCB_RESERVEGPUVIRTUALADDRESSRANGE structure (d3dkmddi.h)
DXGKARGCB_RESERVEGPUVIRTUALADDRESSRANGE contains the arguments used by the DXGKCB_RESERVEGPUVIRTUALADDRESSRANGE callback function, to allow the kernel-mode display driver to reserve a graphics processing unit (GPU) virtual address range during creation of a process.
Syntax
typedef struct _DXGKARGCB_RESERVEGPUVIRTUALADDRESSRANGE {
[in] HANDLE hDxgkProcess;
[in] UINT64 SizeInBytes;
[in] UINT Alignment;
[out] UINT64 StartVirtualAddress;
[in] UINT64 BaseAddress;
union {
struct {
UINT AllowUserModeMapping : 1;
};
[in] UINT Flags;
};
} DXGKARGCB_RESERVEGPUVIRTUALADDRESSRANGE;
Members
[in] hDxgkProcess
The process handle that was passed to DxgkDdiCreateProcess.
[in] SizeInBytes
The size in bytes of the virtual address range. SizeInBytes must be set to an integral multiple of the address space covered by a single page table entry.
[in] Alignment
The number of bytes to align the start address to. Must be a multiple of the address space covered by a single page table entry and a power of 2.
[out] StartVirtualAddress
The starting location of the reserved address range.
[in] BaseAddress
The base virtual address of the virtual address range in bytes. It must be aligned to the size of the address space, covered by a single page table entry.
[in] AllowUserModeMapping
When set, allows the user-mode driver to map allocations to the range.
[in] Flags
A single value containing the flags set in the structure.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10 (WDDM 2.0) |
| Minimum supported server | Windows Server 2016 |
| Header | d3dkmddi.h (include D3dkmddi.h) |