Rework blast sync callback model

The previous code waited for a frame complete callback from hwui before
notifying WMS that a draw had occurred. However, frame complete callback
was not guaranteed to get called since it only invokes a callback if a
draw actually occured. VRI really needs a signal that RT has completed,
since it just needs to know that a draw was possible so it can notify
WMS that the RT completed its pass.

Instead, rename frameCompleteCallback to frameCommitCallback since that
API is exposed to a public API when a frame was actually drawn.
Create a new callback, frameCompleteCallback, that is invoked when the
draw has completed, regardless if a frame was actually drawn.

When the frameCompleteCallback is invoked, VRI can check to see if a new
frame actually drew. VRI can call into BBQ to see if the frame acquired
matches the frame that was attempted to draw. If so, VRI can wait on a
transaction callback. If not, it can allow VRI to continue. In either case,
it will notify WMS that the draw has finished.

Test: Split over and over
Bug: 195262673
Bug: 193634619
Change-Id: I24dd19ab2746be3fc33e597761abf8c5249f8b5b
Merged-In: I24dd19ab2746be3fc33e597761abf8c5249f8b5b

1 files changed, 5 insertions, 1 deletions

diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index c485ce2781e5..72d4ac5081e6 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -326,7 +326,11 @@ void RenderProxy::setFrameCallback(std::function<void(int64_t)>&& callback) {
     mDrawFrameTask.setFrameCallback(std::move(callback));
 }
 
-void RenderProxy::setFrameCompleteCallback(std::function<void(int64_t)>&& callback) {
+void RenderProxy::setFrameCommitCallback(std::function<void(bool)>&& callback) {
+    mDrawFrameTask.setFrameCommitCallback(std::move(callback));
+}
+
+void RenderProxy::setFrameCompleteCallback(std::function<void()>&& callback) {
     mDrawFrameTask.setFrameCompleteCallback(std::move(callback));
 }