tree 9624b3d718e065747bedff50cb969151d675a471
parent a74cbc06493ed941a8a54f2f1d0074f03fc9aafb
author Jesse Hall <jessehall@google.com> 1339710317 -0700
committer Jesse Hall <jessehall@google.com> 1340342472 -0700

Transfer HWC release fences to BufferQueue

After a HWC set, each SurfaceFlinger Layer retrieves the release fence
HWC returned and gives it to the layer's SurfaceTexture. The
SurfaceTexture accumulates the fences into a merged fence until the
next updateTexImage, then passes the merged fence to the BufferQueue
in releaseBuffer.

In a follow-on change, BufferQueue will return the fence along with
the buffer slot in dequeueBuffer. For now, dequeueBuffer waits for the
fence to signal before returning.

The releaseFence default value for BufferQueue::releaseBuffer() is
temporary to avoid transient build breaks with a multi-project
checkin. It'll disappear in the next change.

Change-Id: Iaa9a0d5775235585d9cbf453d3a64623d08013d9