PFND3DDDI_SIGNALSYNCHRONIZATIONOBJECTFROMGPUCB callback function (d3dumddi.h)
pfnSignalSynchronizationObjectFromGpuCb is used to signal a monitored fence. When a particular graphics processing unit (GPU) engine is not capable of writing a new monitored fence value directly using its GPU virtual address, the driver needs to flush its command buffer and issue a signal from a GPU packet using pfnSignalSynchronizationObjectFromGpu2Cb. For Windows Display Driver Model (WDDM) v2 drivers, existing pfnSignalSynchronizationObjectCb and pfnSignalSynchronizationObject2Cb callbacks are deprecated and will eventually be removed. WDDM v2 user mode drivers should switch to pfnSignalSynchronizationObjectFromGpuCb, as it supports all synchronization object types.
Syntax
PFND3DDDI_SIGNALSYNCHRONIZATIONOBJECTFROMGPUCB Pfnd3dddiSignalsynchronizationobjectfromgpucb;
HRESULT Pfnd3dddiSignalsynchronizationobjectfromgpucb(
HANDLE hDevice,
const D3DDDICB_SIGNALSYNCHRONIZATIONOBJECTFROMGPU *unnamedParam2
)
{...}
Parameters
hDevice
A handle to the display device.
unnamedParam2
pData [in]
A pointer to a D3DDDICB_SIGNALSYNCHRONIZATIONOBJECTFROMGPU structure that provides the details of the requested operation.
Return value
If this callback function succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
This function semantics are similar to existing pfnSignalSynchronizationObject2Cb call. In addition, the function supports monitored fence objects and an array of monitored fence values to signal.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 10 |
| Minimum supported server | Windows Server 2016 |
| Target Platform | Desktop |
| Header | d3dumddi.h (include D3dumddi.h) |
See also
D3DDDICB_SIGNALSYNCHRONIZATIONOBJECTFROMGPU
pfnSignalSynchronizationObject2Cb