enqueue()
Reserves the next available place for the command buffer in its command queue.
Declaration
func enqueue()Discussion
The enqueue() method adds the command buffer to the MTLCommandQueue instance that owns it, but doesn’t commit the command buffer to run on the GPU. You can call the command buffer’s commit() method at a later time when it’s ready to run on the GPU. You can call a command buffer’s enqueue() method any time before you call commit(), including before, after, or as you encode commands to it.
Enqueuing your command buffers first gives you the flexibility to arrange their relative order of execution before encoding commands to any of them. This approach lets you potentially encode each command buffer on a thread, in parallel, instead of encoding them one by one on a single thread. The order in which each worker thread finishes encoding and commits its command buffer doesn’t matter when you enqueue them in order before committing.