OptionalonResolves after work submitted before this call completes on the GPU.
Submits recorded command buffers, in order.
Uploads CPU bytes into a texture's mip level.
The WebGPU counterpart of texImage2D, and note what it is not: there is
no bound texture and no unit, so an upload triggered mid-frame cannot
disturb anything the frame has already bound — the gl.bindTexture(…, null)
the WebGL cache issues after every upload has no counterpart here because
it has nothing to undo.
The device's submission queue.