commit fc2acbe75484dea7197b75d0ef9889f78398b06b
author Saurabh Shah <saurshah@codeaurora.org> Fri Aug 17 19:47:52 2012 -0700
committer Iliyan Malchev <malchev@google.com> Mon Aug 27 13:53:40 2012 -0700
tree 14070c0de4a3cdb23e0cdd560baa22f7c0cc903b
parent 94822ee87c6b3de1af7ca25c04f868f7e29e4ca2

hwc/fb/overlay: wait for fbpost and pan display

Draw sequence in hwc_set
--eglSwapBuffers
--wait for fb_post. Its ok to draw to External only at this point.
--draw to external   | Parallel with PAN
--commit to external | Parallel with PAN
--wait for pan (happening in fb_post) to finish.

Call MSMFB_OVERLAY_SET ioctl only when params change.

These thing together ensure a correct sequence and should fix tearing and
stuttering, the latter assuming there are no other display pipeline delays.

Acked-by: Arun Kumar K.R <akumarkr@codeaurora.org>

Change-Id: Ibb0ad8485fa6b30dc6ac07ae8b25a760941c08ce