From ec47c41a1654a5c95dd6c5c905adc3b900e6f6f1 Mon Sep 17 00:00:00 2001
From: Daria Volvenkova <d.volvenkova@corp.mail.ru>
Date: Wed, 11 Jul 2018 18:32:55 +0300
Subject: [PATCH] Enable antialiasing when transit scheme is enabled.

---
 drape_frontend/frontend_renderer.cpp    |  6 ++++++
 drape_frontend/frontend_renderer.hpp    |  1 +
 drape_frontend/postprocess_renderer.cpp | 18 ++++++++++++++++--
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drape_frontend/frontend_renderer.cpp b/drape_frontend/frontend_renderer.cpp
index 8f15c6d809..6ebd798261 100755
--- a/drape_frontend/frontend_renderer.cpp
+++ b/drape_frontend/frontend_renderer.cpp
@@ -759,6 +759,10 @@ void FrontendRenderer::AcceptMessage(ref_ptr<Message> message)
     {
       ref_ptr<EnableTransitSchemeMessage > msg = message;
       m_transitSchemeEnabled = msg->IsEnabled();
+#ifndef OMIM_OS_IPHONE_SIMULATOR
+      m_postprocessRenderer->SetEffectEnabled(PostprocessRenderer::Effect::Antialiasing,
+                                              msg->IsEnabled() ? true : m_isAntialiasingEnabled);
+#endif
       if (!msg->IsEnabled())
         m_transitSchemeRenderer->ClearGLDependentResources(make_ref(m_overlayTree));
       break;
@@ -855,6 +859,8 @@ void FrontendRenderer::AcceptMessage(ref_ptr<Message> message)
   case Message::SetPosteffectEnabled:
     {
       ref_ptr<SetPosteffectEnabledMessage> msg = message;
+      if (msg->GetEffect() == PostprocessRenderer::Effect::Antialiasing)
+        m_isAntialiasingEnabled = msg->IsEnabled();
 #ifndef OMIM_OS_IPHONE_SIMULATOR
       m_postprocessRenderer->SetEffectEnabled(msg->GetEffect(), msg->IsEnabled());
 #endif
diff --git a/drape_frontend/frontend_renderer.hpp b/drape_frontend/frontend_renderer.hpp
index 4976bf8765..42d1fc42db 100755
--- a/drape_frontend/frontend_renderer.hpp
+++ b/drape_frontend/frontend_renderer.hpp
@@ -330,6 +330,7 @@ private:
   bool m_forceUpdateScene;
   bool m_forceUpdateUserMarks;
 
+  bool m_isAntialiasingEnabled = false;
   drape_ptr<PostprocessRenderer> m_postprocessRenderer;
 
   drape_ptr<ScenarioManager> m_scenarioManager;
diff --git a/drape_frontend/postprocess_renderer.cpp b/drape_frontend/postprocess_renderer.cpp
index 809edf7e3d..b0666d1387 100644
--- a/drape_frontend/postprocess_renderer.cpp
+++ b/drape_frontend/postprocess_renderer.cpp
@@ -453,9 +453,23 @@ void PostprocessRenderer::OnFramebufferFallback()
 
 void PostprocessRenderer::OnChangedRouteFollowingMode(bool isRouteFollowingActive)
 {
+  if (m_isRouteFollowingActive == isRouteFollowingActive)
+    return;
+
   m_isRouteFollowingActive = isRouteFollowingActive;
-  m_isMainFramebufferRendered = false;
-  m_isSmaaFramebufferRendered = false;
+  if (m_isRouteFollowingActive)
+  {
+    if (m_width != 0 && m_height != 0)
+      UpdateFramebuffers(m_width, m_height);
+  }
+  else
+  {
+    m_isMainFramebufferRendered = false;
+    m_isSmaaFramebufferRendered = false;
+    m_edgesFramebuffer.reset();
+    m_blendingWeightFramebuffer.reset();
+    m_smaaFramebuffer.reset();
+  }
 }
 
 StencilWriterGuard::StencilWriterGuard(ref_ptr<PostprocessRenderer> renderer)