SurfaceFlinger: Pass surface damage to HWC

Passes the surface damage from the incoming SurfaceFlingerConsumer
BufferQueue down to the hardware composer HAL interface, if the
HWC version number is 1.5 or greater.

Bug: 11239309
Change-Id: Ic4305210593874a8d6deba3319055b2b8c57e926

1 files changed, 23 insertions, 0 deletions

diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 2ac4765a52..7bb7529edc 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -513,6 +513,16 @@ void Layer::setPerFrameData(const sp<const DisplayDevice>& hw,
     Region visible = tr.transform(visibleRegion.intersect(hw->getViewport()));
     layer.setVisibleRegionScreen(visible);
 
+    // Pass full-surface damage down untouched
+    if (surfaceDamageRegion.isRect() &&
+            surfaceDamageRegion.getBounds() == Rect::INVALID_RECT) {
+        layer.setSurfaceDamage(surfaceDamageRegion);
+    } else {
+        Region surfaceDamage =
+            tr.transform(surfaceDamageRegion.intersect(hw->getViewport()));
+        layer.setSurfaceDamage(surfaceDamage);
+    }
+
     if (mSidebandStream.get()) {
         layer.setSidebandStream(mSidebandStream);
     } else {
@@ -1034,6 +1044,18 @@ bool Layer::setLayerStack(uint32_t layerStack) {
     return true;
 }
 
+void Layer::useSurfaceDamage() {
+    if (mFlinger->mForceFullDamage) {
+        surfaceDamageRegion = Region::INVALID_REGION;
+    } else {
+        surfaceDamageRegion = mSurfaceFlingerConsumer->getSurfaceDamage();
+    }
+}
+
+void Layer::useEmptyDamage() {
+    surfaceDamageRegion.clear();
+}
+
 // ----------------------------------------------------------------------------
 // pageflip handling...
 // ----------------------------------------------------------------------------
@@ -1349,6 +1371,7 @@ void Layer::dump(String8& result, Colorizer& colorizer) const
 
     s.activeTransparentRegion.dump(result, "transparentRegion");
     visibleRegion.dump(result, "visibleRegion");
+    surfaceDamageRegion.dump(result, "surfaceDamageRegion");
     sp<Client> client(mClientRef.promote());
 
     result.appendFormat(            "      "