D3D12_COMMAND_QUEUE_PRIORITY enumeration (d3d12.h)

Defines priority levels for a command queue.

Syntax

typedef enum D3D12_COMMAND_QUEUE_PRIORITY {
 D3D12_COMMAND_QUEUE_PRIORITY_NORMAL = 0,
 D3D12_COMMAND_QUEUE_PRIORITY_HIGH = 100,
 D3D12_COMMAND_QUEUE_PRIORITY_GLOBAL_REALTIME = 10000
} ;

Constants

Remarks

This enumeration is used by the Priority member of the D3D12_COMMAND_QUEUE_DESC structure.

An application must be sufficiently privileged in order to create a command queue that has global realtime priority. If the application is not sufficiently privileged or if neither the adapter or driver can provide the necessary preemption, then requests to create a global realtime priority queue fail; such a failure could be due to a lack of hardware support or due to conflicts with other command queue parameters. Requests to create a global realtime command queue won't silently downgrade the priority when it can't be supported; the request succeeds or fails as-is to indicate to the application whether or not the command queue is guaranteed to execute before any other queue.

Requirements

See also

Core Enumerations