DXGKDDI_DISPLAYMUX_POST_SWITCH_TO_PHASE2 callback function (dispmprt.h)
Dxgkrnl calls the kernel-mode display driver's (KMD) DxgkddiDisplayMuxPostSwitchToPhase2 function to notify the driver that the mux switch has completed, and that the driver is now connected to the display and should perform phase 2 tasks.
Syntax
DXGKDDI_DISPLAYMUX_POST_SWITCH_TO_PHASE2 DxgkddiDisplaymuxPostSwitchToPhase2;
NTSTATUS DxgkddiDisplaymuxPostSwitchToPhase2(
PVOID DriverContext,
ULONG VidPnTargetId,
BOOLEAN *pWasPanelInPSR
)
{...}
Parameters
DriverContext
[in] Handle to a context block that is associated with a display adapter. KMD's DxgkDdiAddDevice function previously provided this handle to Dxgkrnl.
VidPnTargetId
[in] The VidPN target that the DDI is being called for.
pWasPanelInPSR
[out] Pointer to a Boolean value that the driver should set to indicate whether the panel was in panel self-refresh (PSR) when the driver took over control.
KMD should set this value to TRUE if the panel was in PSR. If the driver can't reliably determine whether the panel was in PSR, it should still set this value to TRUE. KMD should only return FALSE if it can reliably determine that the panel was not in PSR.
Return value
DxgkddiDisplayMuxPostSwitchToPhase2 returns STATUS_SUCCESS if it succeeds. Otherwise, it returns an appropriate error code.
Remarks
This DDI is called under synchronization level 2.
For more information, see Automatic Display Switch.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 11, version 24H2, update 2025.01 |
| Header | dispmprt.h |
| IRQL | PASSIVE_LEVEL |