DXGK_VIDPNTOPOLOGY_INTERFACE::pfnReleasePathInfo routine

The pfnReleasePathInfo function releases a D3DKMDT_VIDPN_PRESENT_PATH structure that the VidPN manager previously provided to the display miniport driver.

Syntax


DXGKDDI_VIDPNTOPOLOGY_RELEASEPATHINFO pfnReleasePathInfo;

NTSTATUS APIENTRY pfnReleasePathInfo(
  _In_  const D3DKMDT_HVIDPNTOPOLOGY hVidPnTopology,
  _In_  const D3DKMDT_VIDPN_PRESENT_PATH CONST *pVidPnPresentPathInfo
)
{ ... }

Parameters

hVidPnTopology [in]

[in] A handle to a VidPN topology object. The display miniport driver previously obtained this handle by calling the pfnGetTopology function of the DXGK_VIDPN_INTERFACE interface.

pVidPnPresentPathInfo [in]

[in] A pointer to the D3DKMDT_VIDPN_PRESENT_PATH structure that is to be released.

Return value

The pfnReleasePathInfo function returns one of the following values:

Return codeDescription
STATUS_SUCCESS

The function succeeded.

STATUS_GRAPHICS_INVALID_VIDPN_TOPOLOGY

The handle supplied in hVidPnTopology was invalid.

STATUS_GRAPHICS_INVALID_VIDPN_PRESENT_PATH

The pointer supplied in pVidPnPresentPathInfo was invalid.

 

Remarks

When you have finished using a D3DKMDT_VIDPN_PRESENT_PATH structure that you obtained by calling any of the following functions, you must release the structure by calling pfnReleasePathInfo.

If you obtain a D3DKMDT_VIDPN_PRESENT_PATH structure by calling pfnCreateNewPathInfo and then pass that structure to pfnAddPath, you do not need to release the structure.

If you obtain a handle by calling pfnCreateNewPathInfo and then you decide not to add the new path to a topology, you must release the newly created structire by calling pfnReleasePathInfo.

The D3DKMDT_HVIDPNTOPOLOGY data type is defined in D3dkmdt.h.

Requirements

Version

Available in Windows Vista and later versions of the Windows operating systems.

Header

D3dkmddi.h (include D3dkmddi.h)

IRQL

PASSIVE_LEVEL

See also

pfnAcquireFirstPathInfo
pfnAcquireNextPathInfo
pfnAcqirePathInfo
D3DKMDT_VIDPN_PRESENT_PATH

 

 

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