DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// dispmprt.h
typedef enum _DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY {
DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY_UNINITIALIZED,
DXGK_DIAG_DISPLAY_CONNECTED_DIRECTLY,
DXGK_DIAG_DISPLAY_CONNECTED_INDIRECTLY_CONVERTOR,
DXGK_DIAG_DISPLAY_CONNECTED_INDIRECTLY_HUB,
DXGK_DIAG_DISPLAY_CONNECTED_INDIRECTLY,
DXGK_DIAG_DISPLAY_CONNECTED_UNKNOWN
} DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY;
View the official Windows Driver Kit DDI referenceNo description available.
DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY provides basic display topology information to the operating system (OS) when it is gathering nonintrusive display diagnostic information.
DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY_UNINITIALIZEDReserved for OS use during diagnostic initialization.
DXGK_DIAG_DISPLAY_CONNECTED_DIRECTLYThe monitor is connected directly to the graphics card.
DXGK_DIAG_DISPLAY_CONNECTED_INDIRECTLY_CONVERTORThe monitor is connected indirectly to the graphics card via a converter/connector. In most cases, the driver can only detect active converters.
DXGK_DIAG_DISPLAY_CONNECTED_INDIRECTLY_HUBThe monitor is connected indirectly to the graphics card via a hub.
DXGK_DIAG_DISPLAY_CONNECTED_INDIRECTLYThe monitor is connected indirectly to the graphics card but the driver cannot determine whether it is connected via a hub or a converter.
DXGK_DIAG_DISPLAY_CONNECTED_UNKNOWNThe driver cannot determine whether the monitor is connected directly or indirectly to the graphics card. This value should be used rarely, such as in cases where the connector is a pass through.
The DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY enumeration is a member of the DXGK_DISPLAYSTATE_NONINTRUSIVE structure. It is used while gathering display diagnostic information via calls to DxgkDdiGetDisplayStateNonIntrusive.
Dongles and hubs can increase the failure points that can occur during monitor enumeration and negotiations. The operating system (OS) can use the value of DXGK_DIAG_BASIC_DISPLAY_TOPOLOGY to determine whether to collect more detailed topology information, if available (for example using the DP AUX DDIs), to determine the current state of the hub and/or dongles to look for the culprit component.
DXGK_DISPLAYSTATE_NONINTRUSIVE
DXGKARG_GETDISPLAYSTATENONINTRUSIVE
DxgkDdiGetDisplayStateNonIntrusive