diff --git a/services/surfaceflinger/LayerBE.cpp b/services/surfaceflinger/LayerBE.cpp
new file mode 100644
index 0000000..22e38aa
--- /dev/null
+++ b/services/surfaceflinger/LayerBE.cpp
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_NDEBUG 0
+#undef LOG_TAG
+#define LOG_TAG "LayerBE"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
+#include "Layer.h"
+
+namespace android {
+
+LayerBE::LayerBE(Layer* layer)
+      : mLayer(layer),
+        mMesh(Mesh::TRIANGLE_FAN, 4, 2, 2) {
+    compositionInfo.layer = this;
+}
+
+void LayerBE::onLayerDisplayed(const sp<Fence>& releaseFence) {
+    mLayer->onLayerDisplayed(releaseFence);
+}
+
+void CompositionInfo::dumpHwc(const char* tag) const {
+    ALOGV("[%s]\thwcLayer=%p", tag, static_cast<HWC2::Layer*>(*hwc.hwcLayer));
+    ALOGV("[%s]\tfence=%p", tag, hwc.fence.get());
+    ALOGV("[%s]\ttransform=%d", tag, hwc.transform);
+    ALOGV("[%s]\tz=%d", tag, hwc.z);
+    ALOGV("[%s]\ttype=%d", tag, hwc.type);
+    ALOGV("[%s]\tappId=%d", tag, hwc.appId);
+    ALOGV("[%s]\tdisplayFrame=%4d %4d %4d %4d", tag, hwc.displayFrame.left, hwc.displayFrame.top, hwc.displayFrame.right, hwc.displayFrame.bottom);
+    ALOGV("[%s]\talpha=%.3f", tag, hwc.alpha);
+    ALOGV("[%s]\tsourceCrop=%6.1f %6.1f %6.1f %6.1f", tag, hwc.sourceCrop.left, hwc.sourceCrop.top, hwc.sourceCrop.right, hwc.sourceCrop.bottom);
+
+    std::string label = tag;
+    label+=":visibleRegion";
+    hwc.visibleRegion.dump(label.c_str());
+    label = tag;
+    label+=":surfaceDamage";
+    hwc.surfaceDamage.dump(label.c_str());
+}
+
+void CompositionInfo::dumpRe(const char* tag) const {
+    ALOGV("[%s]\tblackoutLayer=%d", tag, re.blackoutLayer);
+    ALOGV("[%s]\tclearArea=%d", tag, re.clearArea);
+    ALOGV("[%s]\tpreMultipliedAlpha=%d", tag, re.preMultipliedAlpha);
+    ALOGV("[%s]\topaque=%d\n", tag, re.opaque);
+    ALOGV("[%s]\ttexture:name(%d), target(%d), size(%d/%d)", tag, re.texture.getTextureName(), re.texture.getTextureTarget(), (unsigned int)re.texture.getWidth(), (unsigned int)re.texture.getHeight());
+    ALOGV("[%s]\tuseIdentityTransform=%d\n", tag, re.useIdentityTransform);
+}
+
+void CompositionInfo::dump(const char* tag) const {
+    ALOGV("[%s] CompositionInfo", tag);
+    ALOGV("[%s]\tLayerName: %s", tag, layerName.c_str());
+    ALOGV("[%s]\tCompositionType: %d", tag, compositionType);
+    ALOGV("[%s]\tmBuffer = %p", tag, mBuffer.get());
+    ALOGV("[%s]\tmBufferSlot=%d", tag, mBufferSlot);
+    switch (compositionType) {
+        case HWC2::Composition::Device:
+            dumpHwc(tag);
+            break;
+        case HWC2::Composition::Client:
+            dumpRe(tag);
+        default:
+            break;
+    }
+}
+
+}; // namespace android