diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardware.h b/services/surfaceflinger/DisplayHardware/DisplayHardware.h
index 40a6f1e..f02c954 100644
--- a/services/surfaceflinger/DisplayHardware/DisplayHardware.h
+++ b/services/surfaceflinger/DisplayHardware/DisplayHardware.h
@@ -84,9 +84,10 @@
     
     status_t compositionComplete() const;
     
-    Rect bounds() const {
+    Rect getBounds() const {
         return Rect(mWidth, mHeight);
     }
+    inline Rect bounds() const { return getBounds(); }
 
     // only for debugging
     int getCurrentBufferIndex() const;
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index daefd5e..e707bdc 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -40,6 +40,7 @@
 HWComposer::HWComposer(const sp<SurfaceFlinger>& flinger)
     : mFlinger(flinger),
       mModule(0), mHwc(0), mList(0), mCapacity(0),
+      mNumOVLayers(0), mNumFBLayers(0),
       mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE)
 {
     int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
@@ -98,9 +99,40 @@
 
 status_t HWComposer::prepare() const {
     int err = mHwc->prepare(mHwc, mList);
+    if (err == NO_ERROR) {
+        size_t numOVLayers = 0;
+        size_t numFBLayers = 0;
+        size_t count = mList->numHwLayers;
+        for (size_t i=0 ; i<count ; i++) {
+            hwc_layer& l(mList->hwLayers[i]);
+            if (l.flags & HWC_SKIP_LAYER) {
+                l.compositionType = HWC_FRAMEBUFFER;
+            }
+            switch (l.compositionType) {
+                case HWC_OVERLAY:
+                    numOVLayers++;
+                    break;
+                case HWC_FRAMEBUFFER:
+                    numFBLayers++;
+                    break;
+            }
+        }
+        mNumOVLayers = numOVLayers;
+        mNumFBLayers = numFBLayers;
+    }
     return (status_t)err;
 }
 
+size_t HWComposer::getLayerCount(int type) const {
+    switch (type) {
+        case HWC_OVERLAY:
+            return mNumOVLayers;
+        case HWC_FRAMEBUFFER:
+            return mNumFBLayers;
+    }
+    return 0;
+}
+
 status_t HWComposer::commit() const {
     int err = mHwc->set(mHwc, mDpy, mSur, mList);
     if (mList) {
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index 8758a80..aa8ebe1 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -64,6 +64,9 @@
     size_t getNumLayers() const;
     hwc_layer_t* getLayers() const;
 
+    // updated in preapre()
+    size_t getLayerCount(int type) const;
+
     // for debugging
     void dump(String8& out, char* scratch, size_t SIZE,
             const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const;
@@ -81,6 +84,8 @@
     hwc_composer_device_t*  mHwc;
     hwc_layer_list_t*       mList;
     size_t                  mCapacity;
+    mutable size_t          mNumOVLayers;
+    mutable size_t          mNumFBLayers;
     hwc_display_t           mDpy;
     hwc_surface_t           mSur;
     cb_context              mCBContext;