What we really care about is if we're DEFERRED so we need to do a flush
and if there can be any other threads we might race against. We don't
really care about the timeline mode itself.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15566>
This adds a new vk_queue_submit object which contains a list of command
buffers as well as wait and signal operations along with a driver hook
which takes a vk_queue and a vk_queue_submit and does the actual submit.
The common code then handles spawning a submit thread if needed, waiting
for timeline points to materialize, dealing with timeline semaphore
emulation via vk_timeline, etc. All the driver sees are vk_queue.submit
calls with fully materialized vk_sync objects which it can wait on
unconditionally.
This implementation takes a page from RADV's book and only ever spawns
the submit thread if it sees a timeline wait on a time point that has
not yet materialized. If this never happens, it calls vk_queue.submit
directly from vkQueueSubmit() and the thread is never spawned.
One other nicety of the new framework is that there is no longer a
distinction, from the driver's PoV, between fences and semaphores. The
fence, if any, is included as just one more signal operation on the
final vk_queue_submit in the batch.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13427>
This is built on the new vk_sync primitives. In the vk_physical_device,
the driver provides a null-terminated array of vk_sync_type pointers in
priority order. The semaphore implementation then selects the first
type that meets the necessary criterion. In particular, semaphores may
or may not be timelines depending on the VkSemaphoreType. It also
auto-selects the semaphore type based on the external handle types
provided and can down-grade as needed to support a particular external
handle.
The implementation itself is mostly copy+pasted from ANV. The primary
difference is the fact that anv_semaphore_impl has been replaced with
vk_sync. The permanent vk_sync is still embedded (like ANV) but the
temporary one is a pointer. This makes stealing the temporary state as
part of VkQueueSubmit a bit easier.
All of the interesting stuff around waits, signals, etc. is implemented
by the vk_sync interface. All this code does is wrap it all in the
annoyingly detailed VkFence rules so we can provide the correct Vulkan
entrypoint behavior.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13427>
Eric Engestrom
Jason Ekstrand
Jason Ekstrand