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D3DKMTSignalSynchronizationObjectFromCpu function (d3dkmthk.h)

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D3DKMTSignalSynchronizationObjectFromCpu enables a driver to signal a monitored fence.

Syntax

NTSTATUS D3DKMTSignalSynchronizationObjectFromCpu(
  [in] const D3DKMT_SIGNALSYNCHRONIZATIONOBJECTFROMCPU *unnamedParam1
);

Parameters

[in] unnamedParam1

A pointer to a D3DKMT_SIGNALSYNCHRONIZATIONOBJECTFROMCPU structure that provides the details of the requested operation..

Return value

D3DKMTSignalSynchronizationObjectFromCpu returns one of the following values:

Return code Description
STATUS_SUCCESS The operation was successful.

This function might also return other NTSTATUS values.

Remarks

When a monitored fence object is signaled by the CPU, the graphics kernel will update the fence memory location with the signaled value, so it becomes immediately visible to any user mode reader as well as immediately un-wait any satisfied waiters. However, the caller cannot assume that the signal operation will be completed upon the return from this function. Instead, the caller should use appropriate wait functions to check for signal completion.

Note

A signal from a graphics processing unit (GPU) call is not provided. Instead, a driver can signal a new fence value by inserting a GPU write command for FenceValueGPUVirtualAddress into a command buffer.

Requirements

Requirement Value
Minimum supported client Windows 10
Minimum supported server Windows Server 2016
Target Platform Universal
Header d3dkmthk.h (include D3dkmthk.h)
Library Gdi32.lib
DLL Gdi32.dll

See also

D3DKMT_SIGNALSYNCHRONIZATIONOBJECTFROMCPU