The vkGetFenceStatus() call can not be sent to the host for fences
that have imported an external payload (sync fd) because the sync
fd does not exist on the host. A fence used as part of a swapchain
present may be created in the unsignaled state. Then, during
vkQueuePresentKHR() on Android, vkQueueSignalReleaseImage() is used
to import a sync fd payload into the present fence. Prior to this
change, if the user (ANGLE) does vkGetFenceStatus() on this fence,
it would never appear as signaled because the sync fd fence is not
actuallly connected to the fence on the host and the host would just
always return the VK_NOT_READY from the fence's initial unsignaled
state.
This change also updates VkFence_Info to use a std::optional<int>
to make it possible to distinguish if a fence has an imported
already-signaled payload vs not having an imported payload.
Reviewed-by: Aaron Ruby <aruby@blackberry.com>
Acked-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27246>
Jason Macnak
7fb31361f4