DRM syncobjs always let you wait repeatedly on them, so we can set the
flag in the core instead of having each driver override it once they try
to enable the emulated timeline semaphores.
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36563>
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 doesn't map directly to any particular Vulkan object but is,
instead, a base class for the internal implementations of both VkFence
and VkSemaphore. Its utility will become evident in later patches.
The design of vk_sync will look familiar to anyone with significant
experience in DRM. The base object itself is just a pointer to a vfunc
table with function pointers providing the implementation of the various
operations. Depending on how the vk_sync will be used some of of those
vfuncs are optional. If it's only going to be used for VkSemaphore, for
instance, there's no need for reset().
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>
