DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH enumeration (dispmprt.h)

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Syntax

typedef enum _DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH {
  DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_UNINITIALIZED,
  DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_SUFFICIENT,
  DXGK_DIAG_DISPLAY_HARDWARE_LINK_BANDWIDTH_LIMITED,
  DXGK_DIAG_DISPLAY_HARDWARE_SOC_BANDWIDTH_LIMITED,
  DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_ERROR,
  DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_UNKNOWN
} DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH;

Constants

 
DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_UNINITIALIZED
Reserved for OS use during diagnostic initialization.
DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_SUFFICIENT
The bandwidth required to drive the last set display mode on the given target is within the range of what the display hardware and monitor/link can support.
DXGK_DIAG_DISPLAY_HARDWARE_LINK_BANDWIDTH_LIMITED
The bandwidth limitation is on the link or monitor end, and the link negotiation did not result in sufficient bandwidth. Do not set this field if the current target/monitor bus protocol cannot determine the bandwidth it supports.
DXGK_DIAG_DISPLAY_HARDWARE_SOC_BANDWIDTH_LIMITED
The bandwidth limitation is on the display hardware side and silicon cannot support the currently needed bandwidth.
DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_ERROR
This value should be used in rare cases where the driver has hit some error while doing any bandwidth calculations so that all other fields are still filled.
DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH_UNKNOWN
The driver could not calculate the bandwidth requirements for the given monitor/link and/or SOC. This value should be used in rare cases where the driver does not implement the calculation of bandwidth requirements.

Remarks

The DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH enumeration is a member of the DXGK_DISPLAYSTATE_INTRUSIVE structure. It is used while gathering display diagnostic information via calls to DxgkDdiGetDisplayStateIntrusive.

DXGK_DIAG_DISPLAY_HARDWARE_BANDWIDTH tells the operating system whether the display hardware including the link (for example, displayport) has sufficient bandwidth to drive the display on the given target at the last set mode (resolution, refresh rate).

Requirements

Requirement Value
Minimum supported client Windows 10, version 2004
Header dispmprt.h

See also

DXGK_DISPLAYSTATE_INTRUSIVE

DXGKARG_GETDISPLAYSTATEINTRUSIVE

DxgkDdiGetDisplayStateIntrusive