C Specification
The vkGetDeferredOperationMaxConcurrencyKHR
function is defined as:
uint32_t vkGetDeferredOperationMaxConcurrencyKHR(
VkDevice device,
VkDeferredOperationKHR operation);
Parameters
-
device
is the device which ownsoperation
. -
operation
is the deferred operation to be queried.
Description
The returned value is the maximum number of threads that can usefully
execute a deferred operation concurrently, reported for the state of the
deferred operation at the point this command is called.
This value is intended to be used to better schedule work onto available
threads.
Applications can join any number of threads to the deferred operation and
expect it to eventually complete, though excessive joins may return
VK_THREAD_IDLE_KHR
immediately, performing no useful work.
If the deferred operation is currently joined to any threads, the value returned by this command may immediately be out of date.
Implementations must not return zero.
Implementations may return 232-1 to indicate that the maximum concurrency is unknown and cannot be easily derived. Implementations may return values larger than the maximum concurrency available on the host CPU. In these situations, an application should clamp the return value rather than oversubscribing the machine.
Document Notes
For more information, see the Vulkan Specification
This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.
Copyright
Copyright (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.