DXGKCB_MAPCONTEXTALLOCATION callback function (d3dkmddi.h)
A kernel-mode display miniport driver calls DXGKCB_MAPCONTEXTALLOCATION to map a graphics processing unit (GPU) virtual address to the specified context allocation.
Syntax
DXGKCB_MAPCONTEXTALLOCATION DxgkcbMapcontextallocation;
D3DGPU_VIRTUAL_ADDRESS DxgkcbMapcontextallocation(
[in] IN_CONST_HANDLE hAdapter,
[in] IN_CONST_PDXGKARGCB_MAPCONTEXTALLOCATION pArgs
)
{...}
Parameters
[in] hAdapter
A handle to the display adapter.
[in] pArgs
Pointer to a DXGKARGCB_MAPCONTEXTALLOCATION structure that describes the operation.
Return value
DXGKCB_MAPCONTEXTALLOCATION returns a D3DGPU_VIRTUAL_ADDRESS if successful, NULL otherwise.
Remarks
This device driver interface (DDI) behaves like its user-mode counterpart; see pfnMapGpuVirtualAddressCb for more details.
DXGKCB_XXX functions are implemented by Dxgkrnl. To use this callback function, set the members of DXGKARGCB_MAPCONTEXTALLOCATION and then call DxgkCbMapContextAllocation via the DXGKRNL_INTERFACE.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10 (WDDM 2.0) |
| Minimum supported server | Windows Server 2016 |
| Target Platform | Desktop |
| Header | d3dkmddi.h (include D3dkmddi.h) |
| IRQL | PASSIVE_LEVEL |