diff --git a/drape/glstate.cpp b/drape/glstate.cpp
index a9d79758cd..c402930cc3 100644
--- a/drape/glstate.cpp
+++ b/drape/glstate.cpp
@@ -105,6 +105,7 @@ bool GLState::operator==(const GLState & other) const
          m_depthLayer == other.m_depthLayer &&
          m_gpuProgramIndex == other.m_gpuProgramIndex &&
          m_textureSet == other.m_textureSet &&
+         m_blending == other.m_blending &&
          m_color == other.m_color;
 }
 
diff --git a/drape_frontend/frontend_renderer.cpp b/drape_frontend/frontend_renderer.cpp
index f5409ba219..c5b39f73d5 100644
--- a/drape_frontend/frontend_renderer.cpp
+++ b/drape_frontend/frontend_renderer.cpp
@@ -249,7 +249,7 @@ namespace df
     double const range = MercatorBounds::maxX - MercatorBounds::minX;
     double const rectSize = range / (1 << tileScale);
 
-    m2::RectD    const & clipRect   = m_view.ClipRect();
+    m2::RectD const & clipRect   = m_view.ClipRect();
 
     int const minTileX = static_cast<int>(floor(clipRect.minX() / rectSize));
     int const maxTileX = static_cast<int>(ceil(clipRect.maxX() / rectSize));
diff --git a/drape_frontend/message_subclasses.hpp b/drape_frontend/message_subclasses.hpp
index 348f2bb5b5..6fe8e8621b 100644
--- a/drape_frontend/message_subclasses.hpp
+++ b/drape_frontend/message_subclasses.hpp
@@ -100,7 +100,7 @@ namespace df
   class UpdateReadManagerMessage : public UpdateModelViewMessage
   {
   public:
-    UpdateReadManagerMessage(ScreenBase const & screen, shared_ptr<set<TileKey> > tiles)
+    UpdateReadManagerMessage(ScreenBase const & screen, shared_ptr<set<TileKey> > const & tiles)
       : UpdateModelViewMessage(screen)
       , m_tiles(tiles)
     {
diff --git a/drape_frontend/render_group.cpp b/drape_frontend/render_group.cpp
index 8d6e178e05..cfc6a053c3 100644
--- a/drape_frontend/render_group.cpp
+++ b/drape_frontend/render_group.cpp
@@ -6,94 +6,97 @@
 
 namespace df
 {
-  namespace
-  {
-    RenderBucket * NonConstGetter(MasterPointer<RenderBucket> & p)
-    {
-        return p.GetRaw();
-    }
-  }
+namespace
+{
 
-  RenderGroup::RenderGroup(GLState const & state, df::TileKey const & tileKey)
-    : m_state(state)
-    , m_tileKey(tileKey)
-    , m_pendingOnDelete(false)
-  {
-  }
-
-  RenderGroup::~RenderGroup()
-  {
-    (void)GetRangeDeletor(m_renderBuckets, MasterPointerDeleter())();
-  }
-
-  void RenderGroup::CollectOverlay(RefPointer<OverlayTree> tree)
-  {
-    for_each(m_renderBuckets.begin(), m_renderBuckets.end(), bind(&RenderBucket::CollectOverlayHandles,
-                                                                  bind(&NonConstGetter, _1),
-                                                                  tree));
-  }
-
-  void RenderGroup::Render()
-  {
-    ASSERT(m_pendingOnDelete == false, ());
-    for_each(m_renderBuckets.begin(), m_renderBuckets.end(), bind(&RenderBucket::Render,
-                                                                  bind(&NonConstGetter, _1)));
-  }
-
-  void RenderGroup::PrepareForAdd(size_t countForAdd)
-  {
-    m_renderBuckets.reserve(m_renderBuckets.size() + countForAdd);
-  }
-
-  void RenderGroup::AddBucket(TransferPointer<RenderBucket> bucket)
-  {
-    m_renderBuckets.push_back(MasterPointer<RenderBucket>(bucket));
-  }
-
-  bool RenderGroup::IsLess(RenderGroup const & other) const
-  {
-    return m_state < other.m_state;
-  }
-
-  RenderBucketComparator::RenderBucketComparator(set<TileKey> const & activeTiles)
-    : m_activeTiles(activeTiles)
-    , m_needGroupMergeOperation(false)
-    , m_needBucketsMergeOperation(false)
-  {
-  }
-
-  void RenderBucketComparator::ResetInternalState()
-  {
-    m_needBucketsMergeOperation = false;
-    m_needGroupMergeOperation = false;
-  }
-
-  bool RenderBucketComparator::operator()(RenderGroup const * l, RenderGroup const * r)
-  {
-    GLState const & lState = l->GetState();
-    GLState const & rState = r->GetState();
-
-    TileKey const & lKey = l->GetTileKey();
-    TileKey const & rKey = r->GetTileKey();
-
-    if (!l->IsPendingOnDelete() && (l->IsEmpty() || m_activeTiles.find(lKey) == m_activeTiles.end()))
-      l->DeleteLater();
-
-    if (!r->IsPendingOnDelete() && (r->IsEmpty() || m_activeTiles.find(rKey) == m_activeTiles.end()))
-      r->DeleteLater();
-
-    bool lPendingOnDelete = l->IsPendingOnDelete();
-    bool rPendingOnDelete = r->IsPendingOnDelete();
-
-    if (lState == rState && lKey == rKey && !lPendingOnDelete)
-      m_needGroupMergeOperation = true;
-
-    if (rPendingOnDelete == lPendingOnDelete)
-      return lState < rState;
-
-    if (rPendingOnDelete)
-      return true;
-
-    return false;
-  }
+RenderBucket * NonConstGetter(MasterPointer<RenderBucket> & p)
+{
+  return p.GetRaw();
 }
+
+} /// namespace
+
+RenderGroup::RenderGroup(GLState const & state, df::TileKey const & tileKey)
+  : m_state(state)
+  , m_tileKey(tileKey)
+  , m_pendingOnDelete(false)
+{
+}
+
+RenderGroup::~RenderGroup()
+{
+  (void)GetRangeDeletor(m_renderBuckets, MasterPointerDeleter())();
+}
+
+void RenderGroup::CollectOverlay(RefPointer<OverlayTree> tree)
+{
+  for_each(m_renderBuckets.begin(), m_renderBuckets.end(), bind(&RenderBucket::CollectOverlayHandles,
+                                                                bind(&NonConstGetter, _1),
+                                                                tree));
+}
+
+void RenderGroup::Render()
+{
+  ASSERT(m_pendingOnDelete == false, ());
+  for_each(m_renderBuckets.begin(), m_renderBuckets.end(), bind(&RenderBucket::Render,
+                                                                bind(&NonConstGetter, _1)));
+}
+
+void RenderGroup::PrepareForAdd(size_t countForAdd)
+{
+  m_renderBuckets.reserve(m_renderBuckets.size() + countForAdd);
+}
+
+void RenderGroup::AddBucket(TransferPointer<RenderBucket> bucket)
+{
+  m_renderBuckets.push_back(MasterPointer<RenderBucket>(bucket));
+}
+
+bool RenderGroup::IsLess(RenderGroup const & other) const
+{
+  return m_state < other.m_state;
+}
+
+RenderBucketComparator::RenderBucketComparator(set<TileKey> const & activeTiles)
+  : m_activeTiles(activeTiles)
+  , m_needGroupMergeOperation(false)
+  , m_needBucketsMergeOperation(false)
+{
+}
+
+void RenderBucketComparator::ResetInternalState()
+{
+  m_needBucketsMergeOperation = false;
+  m_needGroupMergeOperation = false;
+}
+
+bool RenderBucketComparator::operator()(RenderGroup const * l, RenderGroup const * r)
+{
+  GLState const & lState = l->GetState();
+  GLState const & rState = r->GetState();
+
+  TileKey const & lKey = l->GetTileKey();
+  TileKey const & rKey = r->GetTileKey();
+
+  if (!l->IsPendingOnDelete() && (l->IsEmpty() || m_activeTiles.find(lKey) == m_activeTiles.end()))
+    l->DeleteLater();
+
+  if (!r->IsPendingOnDelete() && (r->IsEmpty() || m_activeTiles.find(rKey) == m_activeTiles.end()))
+    r->DeleteLater();
+
+  bool lPendingOnDelete = l->IsPendingOnDelete();
+  bool rPendingOnDelete = r->IsPendingOnDelete();
+
+  if (lState == rState && lKey == rKey && !lPendingOnDelete)
+    m_needGroupMergeOperation = true;
+
+  if (rPendingOnDelete == lPendingOnDelete)
+    return lState < rState;
+
+  if (rPendingOnDelete)
+    return true;
+
+  return false;
+}
+
+} // namespace df
diff --git a/drape_frontend/render_group.hpp b/drape_frontend/render_group.hpp
index 3447c57531..a71b7e60f1 100644
--- a/drape_frontend/render_group.hpp
+++ b/drape_frontend/render_group.hpp
@@ -13,47 +13,49 @@ class OverlayTree;
 
 namespace df
 {
-  class RenderGroup
-  {
-  public:
-    RenderGroup(GLState const & state, TileKey const & tileKey);
-    ~RenderGroup();
 
-    void CollectOverlay(RefPointer<OverlayTree> tree);
-    void Render();
+class RenderGroup
+{
+public:
+  RenderGroup(GLState const & state, TileKey const & tileKey);
+  ~RenderGroup();
 
-    void PrepareForAdd(size_t countForAdd);
-    void AddBucket(TransferPointer<RenderBucket> bucket);
+  void CollectOverlay(RefPointer<OverlayTree> tree);
+  void Render();
 
-    GLState const & GetState() const { return m_state; }
-    TileKey const & GetTileKey() const { return m_tileKey; }
+  void PrepareForAdd(size_t countForAdd);
+  void AddBucket(TransferPointer<RenderBucket> bucket);
 
-    bool IsEmpty() const { return m_renderBuckets.empty(); }
-    void DeleteLater() const { m_pendingOnDelete = true; }
-    bool IsPendingOnDelete() const { return m_pendingOnDelete; }
+  GLState const & GetState() const { return m_state; }
+  TileKey const & GetTileKey() const { return m_tileKey; }
 
-    bool IsLess(RenderGroup const & other) const;
+  bool IsEmpty() const { return m_renderBuckets.empty(); }
+  void DeleteLater() const { m_pendingOnDelete = true; }
+  bool IsPendingOnDelete() const { return m_pendingOnDelete; }
 
-  private:
-    GLState m_state;
-    TileKey m_tileKey;
-    vector<MasterPointer<RenderBucket> > m_renderBuckets;
+  bool IsLess(RenderGroup const & other) const;
 
-    mutable bool m_pendingOnDelete;
-  };
+private:
+  GLState m_state;
+  TileKey m_tileKey;
+  vector<MasterPointer<RenderBucket> > m_renderBuckets;
 
-  class RenderBucketComparator
-  {
-  public:
-    RenderBucketComparator(set<TileKey> const & activeTiles);
+  mutable bool m_pendingOnDelete;
+};
 
-    void ResetInternalState();
+class RenderBucketComparator
+{
+public:
+  RenderBucketComparator(set<TileKey> const & activeTiles);
 
-    bool operator()(RenderGroup const * l, RenderGroup const * r);
+  void ResetInternalState();
 
-  private:
-    set<TileKey> const & m_activeTiles;
-    bool m_needGroupMergeOperation;
-    bool m_needBucketsMergeOperation;
-  };
-}
+  bool operator()(RenderGroup const * l, RenderGroup const * r);
+
+private:
+  set<TileKey> const & m_activeTiles;
+  bool m_needGroupMergeOperation;
+  bool m_needBucketsMergeOperation;
+};
+
+} // namespace df