6.8. Host Write Ordering Guarantees

When batches of command buffers are submitted to a queue via vkQueueSubmit, it defines a memory dependency with prior host operations, and execution of command buffers submitted to the queue.

The first synchronization scope is defined by the host execution model, but includes execution of vkQueueSubmit on the host and anything that happened-before it.

The second synchronization scope includes every command submitted in the same queue submission command, and all future submissions to the same queue.

The first access scope includes all host writes to mappable device memory that are either coherent, or have been flushed with vkFlushMappedMemoryRanges.

The second access scope includes all memory access performed by the device.