DXGKCB_UNPINFRAMEBUFFERFORSAVE callback function (d3dkmddi.h)
A kernel-mode display miniport driver calls DXGKCB_UNPINFRAMEBUFFERFORSAVE to release the mapping that was set in a prior call to DXGKCB_PINFRAMEBUFFERFORSAVE2 or DXGKCB_PINFRAMEBUFFERFORSAVE.
Syntax
DXGKCB_UNPINFRAMEBUFFERFORSAVE DxgkcbUnpinframebufferforsave;
NTSTATUS DxgkcbUnpinframebufferforsave(
[in] IN_CONST_HANDLE hAdapter,
[in] IN_CONST_PDXGKARGCB_UNPINFRAMEBUFFERFORSAVE pUnpinFrameBufferForSave
)
{...}
Parameters
[in] hAdapter
A handle to a display adapter. The driver provides this handle for the master/lead device in the LDA chain.
[in] pUnpinFrameBufferForSave
A pointer to the DXGKARGCB_UNPINFRAMEBUFFERFORSAVE structure that contains a handle to the memory to be unmapped.
Return value
DXGKCB_UNPINFRAMEBUFFERFORSAVE returns STATUS_SUCCESS if the operation succeeds. Otherwise, it returns one of the error codes defined in Ntstatus.h.
Remarks
DXGKCB_XXX functions are implemented by Dxgkrnl. To use this callback function, set the members of DXGKARGCB_UNPINFRAMEBUFFERFORSAVE and then call DxgkCbUnpinFrameBufferForSave via the DXGKRNL_INTERFACE.
See IOMMU-based GPU isolation for more information.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10, version 1803 (WDDM 2.4) |
| Header | d3dkmddi.h |
| IRQL | PASSIVE_LEVEL |