DXGKARGCB_MAPCONTEXTALLOCATION - NtDoc
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// d3dkmddi.h
typedef struct _DXGKARGCB_MAPCONTEXTALLOCATION {
[in] D3DGPU_VIRTUAL_ADDRESS BaseAddress;
[in] D3DGPU_VIRTUAL_ADDRESS MinimumAddress;
[in] D3DGPU_VIRTUAL_ADDRESS MaximumAddress;
[in] HANDLE hAllocation;
[in] D3DGPU_SIZE_T OffsetInPages;
[in] D3DGPU_SIZE_T SizeInPages;
[in] D3DDDIGPUVIRTUALADDRESS_PROTECTION_TYPE Protection;
[in] UINT64 DriverProtection;
} DXGKARGCB_MAPCONTEXTALLOCATION;
View the official Windows Driver Kit DDI referenceNo description available.
The DXGKARGCB_MAPCONTEXTALLOCATION structure contains the arguments used in the DXGKCB_MAPCONTEXTALLOCATION callback function, to map a graphics processing unit (GPU) virtual address to the specified context allocation.
BaseAddress [in](optional) If non-NULL, the video memory manager will attempt to use this address as the base address for the mapping. If the range from BaseAddress to BaseAddress+Size isn’t free, the call will fail. When this parameter is non-NULL, MinimumAddress and MaximumAddress are ignored.
If NULL is specified, the video memory manager will pick the base address for the allocation within the specified MinimumAddress and MaximumAddress.
MinimumAddress [in](optional) The minimum GPU virtual address to consider for the mapped range. This parameter is ignored when BaseAddress != NULL.
MaximumAddress [in]The maximum GPU virtual address to consider for the mapped range. The video memory manager will guarantee that BaseAddress+Size <= MaximumAddress. If this is set to NULL the video memory manager will not apply any limit. This parameter is ignored when BaseAddress != NULL.
hAllocation [in]Handle to the allocation being mapped into the GPU virtual address space. This is a DirectX graphics kernel handle, returned by DXGKCB_CREATECONTEXTALLOCATION.
OffsetInPages [in]The offset, in 4KB pages, to the starting page within the specified allocation that must be mapped.
SizeInPages [in]The size of the range to map in number of 4KB pages.
Protection [in]The protection on the GPU virtual address that is mapped.
DriverProtection [in]The driver protection parameters.
DXGKCB_CREATECONTEXTALLOCATION