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The DxgkDdiEscape function shares information with the user-mode display driver.
Syntax
DXGKDDI_ESCAPE DxgkddiEscape;
NTSTATUS DxgkddiEscape(
[in] IN_CONST_HANDLE hAdapter,
[in] IN_CONST_PDXGKARG_ESCAPE pEscape
)
{...}
Parameters
[in] hAdapter
A handle to a context block that is associated with a display adapter. The display miniport driver previously provided this handle to the Microsoft DirectX graphics kernel subsystem in the MiniportDeviceContext output parameter of the DxgkDdiAddDevice function.
[in] pEscape
A pointer to a DXGKARG_ESCAPE structure that contains information about the shared information.
Return value
DxgkDdiEscape returns one of the following values:
Return code | Description |
---|---|
STATUS_SUCCESS | DxgkDdiEscape successfully shared information. |
STATUS_INVALID_PARAMETER | Parameters that were passed to DxgkDdiEscape contained errors that prevented it from completing. |
STATUS_NO_MEMORY | DxgkDdiEscape could not allocate memory that was required for it to complete. |
STATUS_PRIVILEGED_INSTRUCTION | DxgkDdiEscape detected nonprivileged instructions (that is, instructions that access memory beyond the privilege of the current central processing unit [CPU] process). |
STATUS_ILLEGAL_INSTRUCTION | DxgkDdiEscape detected instructions that graphics hardware could not support. |
STATUS_GRAPHICS_DRIVER_MISMATCH | The display miniport driver is not compatible with the user-mode display driver that initiated the call to DxgkDdiEscape. |
Remarks
The DirectX graphics kernel subsystem calls the display miniport driver's DxgkDdiEscape function whenever the user-mode display driver must share information with the display miniport driver in a way that is not supported through other driver communications.
DxgkDdiEscape should be made pageable.
Requirements
Requirement | Value |
---|---|
Minimum supported client | Windows Vista |
Target Platform | Desktop |
Header | d3dkmddi.h |
IRQL | PASSIVE_LEVEL |