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QueryEnd routine

The QueryEnd function marks the end of a sequence of graphics commands for a query and transitions the query to the "issued" state.

Syntax


PFND3D10DDI_QUERYEND QueryEnd;

VOID APIENTRY QueryEnd(
  _In_  D3D10DDI_HDEVICE hDevice,
  _In_  D3D10DDI_HQUERY hQuery
)
{ ... }

Parameters

hDevice [in]

A handle to the display device (graphics context).

hQuery [in]

A handle to the query object to end.

Return value

None

The driver can use the pfnSetErrorCb callback function to set an error code. For more information about setting error codes, see the following Remarks section.

Remarks

If the driver supports the QueryBegin function for a query operation, and if the Microsoft Direct3D runtime calls QueryEnd without call QueryBegin, the call is equivalent to first calling QueryBegin and then calling QueryEnd immediately afterward. In addition, the runtime cannot call QueryEnd on a predicate that is currently bound to the pipeline through a call to the SetPredication function.

The driver should not encounter any error, except for D3DDDIERR_DEVICEREMOVED. Therefore, if the driver passes any error, except for D3DDDIERR_DEVICEREMOVED, in a call to the pfnSetErrorCb function, the Direct3D runtime will determine that the error is critical. Even if the device was removed, the driver is not required to return D3DDDIERR_DEVICEREMOVED; however, if device removal interfered with the operation of QueryEnd (which typically should not happen), the driver can return D3DDDIERR_DEVICEREMOVED.

Requirements

Version

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

Header

D3d10umddi.h (include D3d10umddi.h)

See also

D3D10DDI_DEVICEFUNCS
pfnSetErrorCb
QueryBegin
SetPredication

 

 

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