DXGKDDI_CONTROLINTERRUPT callback function (d3dkmddi.h)

The DxgkDdiControlInterrupt function enables or disables the given interrupt type on the graphics hardware.

Syntax

DXGKDDI_CONTROLINTERRUPT DxgkddiControlinterrupt;

NTSTATUS DxgkddiControlinterrupt(
  [in] IN_CONST_HANDLE hAdapter,
  [in] IN_CONST_DXGK_INTERRUPT_TYPE InterruptType,
  [in] IN_BOOLEAN EnableInterrupt
)
{...}

Parameters

[in] hAdapter

A handle to the adapter object for the graphics processing unit (GPU). The driver returned this handle in the MiniportDeviceContext parameter from a call to its DxgkDdiAddDevice function.

[in] InterruptType

A DXGK_INTERRUPT_TYPE-type value that supplies the interrupt type.

[in] EnableInterrupt

A Boolean value that indicates whether DxgkDdiControlInterrupt enables or disables the specified interrupt type. TRUE indicates that it enables and FALSE indicates that it disables.

Return value

DxgkDdiControlInterrupt returns one of the following values:

Remarks

The display miniport driver's DxgkDdiControlInterrupt function can enable or disable the specified interrupt type. However, DxgkDdiControlInterrupt is not required to disable the interrupt type if the driver requires the interrupt type for an internal purpose. A call to DxgkDdiControlInterrupt to enable the specified interrupt type indicates that the operating system requires that the driver call the DxgkCbNotifyInterrupt function to report when the interrupt type is triggered on the graphics hardware.

Currently, the Microsoft DirectX graphics kernel subsystem specifies only the DXGK_INTERRUPT_CRTC_VSYNC interrupt type in the InterruptType parameter. A call to DxgkDdiControlInterrupt to enable the DXGK_INTERRUPT_CRTC_VSYNC interrupt type indicates for the driver to control vertical retrace interrupt. During every vertical retrace period and immediately after the primary surface address specified in the DAC register is latched and scanned out, the interrupt should be triggered and reported.

The driver must return STATUS_NOT_IMPLEMENTED if an interrupt type other than DXGK_INTERRUPT_CRTC_VSYNC is supplied.

DxgkDdiControlInterrupt should be made pageable.

Requirements

See also

DXGK_INTERRUPT_TYPE

DxgkCbNotifyInterrupt

DxgkDdiAddDevice