[vulkan] deferred command buffers (guest)
bug: 111137294
When we get "ANDROID_EMU_deferred_vulkan_commands" in the
renderControl string from the host, enable
deferred command buffer recording, where we
avoid a round trip + immediate recording on
vkBegin/End/ResetCommandBuffer; this has the effect of
delaying command submission to the next round trip, which
is no later than when these commands are submitted.
To the guest, command recording will feel much faster.
It is true that we will end up delaying command buffer submission
on host until the next vkQueueSubmit; however, it may work out,
because we can record + submit on the host with possibly less
scheduling overhead than before.
Test: glmark2 ANGLE score rose from high 400s-500s to 600s
Change-Id: Ib76be4de05c768d395135ad2c9525d3e156daf31
20 files changed