separate transactions from updates
with this changes, SF transactions are handled as soon as possible
but do not trigger updates. the update is delayed until the next
vsync.
this allows us to work much better without requiring triple-buffering.
Change-Id: I1fa10794d0cf742129f0877698b7b1e1f2ec7401
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index ff70ec3..870235b 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -125,11 +125,34 @@
ALOGI_IF(mDebugDDMS, "DDMS debugging enabled");
}
+void SurfaceFlinger::onFirstRef()
+{
+ mEventQueue.init(this);
+
+ run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY);
+
+ // Wait for the main thread to be done with its initialization
+ mReadyToRunBarrier.wait();
+}
+
+
SurfaceFlinger::~SurfaceFlinger()
{
glDeleteTextures(1, &mWormholeTexName);
}
+void SurfaceFlinger::binderDied(const wp<IBinder>& who)
+{
+ // the window manager died on us. prepare its eulogy.
+
+ // reset screen orientation
+ Vector<ComposerState> state;
+ setTransactionState(state, eOrientationDefault, 0);
+
+ // restart the boot-animation
+ property_set("ctl.start", "bootanim");
+}
+
sp<IMemoryHeap> SurfaceFlinger::getCblk() const
{
return mServerHeap;
@@ -183,26 +206,6 @@
property_set("ctl.stop", "bootanim");
}
-void SurfaceFlinger::binderDied(const wp<IBinder>& who)
-{
- // the window manager died on us. prepare its eulogy.
-
- // reset screen orientation
- Vector<ComposerState> state;
- setTransactionState(state, eOrientationDefault, 0);
-
- // restart the boot-animation
- property_set("ctl.start", "bootanim");
-}
-
-void SurfaceFlinger::onFirstRef()
-{
- run("SurfaceFlinger", PRIORITY_URGENT_DISPLAY);
-
- // Wait for the main thread to be done with its initialization
- mReadyToRunBarrier.wait();
-}
-
static inline uint16_t pack565(int r, int g, int b) {
return (r<<11)|(g<<5)|b;
}
@@ -311,34 +314,6 @@
}
// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Events Handler
-#endif
-
-void SurfaceFlinger::waitForEvent() {
- mEventQueue.waitMessage();
-}
-
-void SurfaceFlinger::signalEvent() {
- mEventQueue.invalidate();
-}
-
-status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg,
- nsecs_t reltime, uint32_t flags) {
- return mEventQueue.postMessage(msg, reltime);
-}
-
-status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
- nsecs_t reltime, uint32_t flags) {
- status_t res = mEventQueue.postMessage(msg, reltime);
- if (res == NO_ERROR) {
- msg->wait();
- }
- return res;
-}
-
-// ----------------------------------------------------------------------------
bool SurfaceFlinger::authenticateSurfaceTexture(
const sp<ISurfaceTexture>& surfaceTexture) const {
@@ -388,54 +363,93 @@
}
// ----------------------------------------------------------------------------
-#if 0
-#pragma mark -
-#pragma mark Main loop
-#endif
+
+void SurfaceFlinger::waitForEvent() {
+ mEventQueue.waitMessage();
+}
+
+void SurfaceFlinger::signalTransaction() {
+ mEventQueue.invalidate();
+}
+
+void SurfaceFlinger::signalLayerUpdate() {
+ mEventQueue.invalidate();
+}
+
+void SurfaceFlinger::signalRefresh() {
+ mEventQueue.refresh();
+}
+
+status_t SurfaceFlinger::postMessageAsync(const sp<MessageBase>& msg,
+ nsecs_t reltime, uint32_t flags) {
+ return mEventQueue.postMessage(msg, reltime);
+}
+
+status_t SurfaceFlinger::postMessageSync(const sp<MessageBase>& msg,
+ nsecs_t reltime, uint32_t flags) {
+ status_t res = mEventQueue.postMessage(msg, reltime);
+ if (res == NO_ERROR) {
+ msg->wait();
+ }
+ return res;
+}
bool SurfaceFlinger::threadLoop()
{
waitForEvent();
-
- // check for transactions
- if (CC_UNLIKELY(mConsoleSignals)) {
- handleConsoleEvents();
- }
-
- // if we're in a global transaction, don't do anything.
- const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
- uint32_t transactionFlags = peekTransactionFlags(mask);
- if (CC_UNLIKELY(transactionFlags)) {
- handleTransaction(transactionFlags);
- }
-
- // post surfaces (if needed)
- handlePageFlip();
-
- if (mDirtyRegion.isEmpty()) {
- // nothing new to do.
- return true;
- }
-
- if (CC_UNLIKELY(mHwWorkListDirty)) {
- // build the h/w work list
- handleWorkList();
- }
-
- const DisplayHardware& hw(graphicPlane(0).displayHardware());
- if (CC_LIKELY(hw.canDraw())) {
- // repaint the framebuffer (if needed)
- handleRepaint();
- // inform the h/w that we're done compositing
- hw.compositionComplete();
- postFramebuffer();
- } else {
- // pretend we did the post
- hw.compositionComplete();
- }
return true;
}
+void SurfaceFlinger::onMessageReceived(int32_t what)
+{
+ switch (what) {
+ case MessageQueue::INVALIDATE: {
+ // check for transactions
+ if (CC_UNLIKELY(mConsoleSignals)) {
+ handleConsoleEvents();
+ }
+
+ // if we're in a global transaction, don't do anything.
+ const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
+ uint32_t transactionFlags = peekTransactionFlags(mask);
+ if (CC_UNLIKELY(transactionFlags)) {
+ handleTransaction(transactionFlags);
+ }
+
+ // post surfaces (if needed)
+ handlePageFlip();
+
+ if (!mDirtyRegion.isEmpty()) {
+ signalRefresh();
+ }
+ } break;
+
+ case MessageQueue::REFRESH: {
+ if (!mDirtyRegion.isEmpty()) {
+ // NOTE: it is mandatory to call hw.compositionComplete()
+ // after handleRefresh()
+ handleRefresh();
+
+ const DisplayHardware& hw(graphicPlane(0).displayHardware());
+ if (CC_UNLIKELY(mHwWorkListDirty)) {
+ // build the h/w work list
+ handleWorkList();
+ }
+ if (CC_LIKELY(hw.canDraw())) {
+ // repaint the framebuffer (if needed)
+ handleRepaint();
+ // inform the h/w that we're done compositing
+ hw.compositionComplete();
+ postFramebuffer();
+ } else {
+ // pretend we did the post
+ hw.compositionComplete();
+ }
+ }
+ } break;
+ }
+}
+
void SurfaceFlinger::postFramebuffer()
{
// this should never happen. we do the flip anyways so we don't
@@ -717,13 +731,13 @@
void SurfaceFlinger::handlePageFlip()
{
- bool visibleRegions = mVisibleRegionsDirty;
- const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
- visibleRegions |= lockPageFlip(currentLayers);
+ const DisplayHardware& hw = graphicPlane(0).displayHardware();
+ const Region screenRegion(hw.bounds());
- const DisplayHardware& hw = graphicPlane(0).displayHardware();
- const Region screenRegion(hw.bounds());
- if (visibleRegions) {
+ const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
+ const bool visibleRegions = lockPageFlip(currentLayers);
+
+ if (visibleRegions || mVisibleRegionsDirty) {
Region opaqueRegion;
computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion);
@@ -770,7 +784,7 @@
{
const GraphicPlane& plane(graphicPlane(0));
const Transform& planeTransform(plane.transform());
- size_t count = currentLayers.size();
+ const size_t count = currentLayers.size();
sp<LayerBase> const* layers = currentLayers.array();
for (size_t i=0 ; i<count ; i++) {
const sp<LayerBase>& layer(layers[i]);
@@ -778,6 +792,23 @@
}
}
+void SurfaceFlinger::handleRefresh()
+{
+ bool needInvalidate = false;
+ const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
+ const size_t count = currentLayers.size();
+ for (size_t i=0 ; i<count ; i++) {
+ const sp<LayerBase>& layer(currentLayers[i]);
+ if (layer->onPreComposition()) {
+ needInvalidate = true;
+ }
+ }
+ if (needInvalidate) {
+ signalLayerUpdate();
+ }
+}
+
+
void SurfaceFlinger::handleWorkList()
{
mHwWorkListDirty = false;
@@ -1175,7 +1206,7 @@
{
uint32_t old = android_atomic_or(flags, &mTransactionFlags);
if ((old & flags)==0) { // wake the server up
- signalEvent();
+ signalTransaction();
}
return old;
}
@@ -1426,14 +1457,14 @@
{
// this may be called by a signal handler, we can't do too much in here
android_atomic_or(eConsoleReleased, &mConsoleSignals);
- signalEvent();
+ signalTransaction();
}
void SurfaceFlinger::screenAcquired(int dpy)
{
// this may be called by a signal handler, we can't do too much in here
android_atomic_or(eConsoleAcquired, &mConsoleSignals);
- signalEvent();
+ signalTransaction();
}
status_t SurfaceFlinger::dump(int fd, const Vector<String16>& args)
@@ -1769,7 +1800,7 @@
const DisplayHardware& hw(graphicPlane(0).displayHardware());
const Rect bounds(hw.getBounds());
setInvalidateRegion(Region(bounds));
- signalEvent();
+ signalTransaction();
}
void SurfaceFlinger::setInvalidateRegion(const Region& reg) {
@@ -2245,7 +2276,7 @@
// make sure to redraw the whole screen when the animation is done
mDirtyRegion.set(hw.bounds());
- signalEvent();
+ signalTransaction();
return NO_ERROR;
}