diff --git a/src/single_window/main_window.cpp b/src/single_window/main_window.cpp
index 1e412f1..ab39f93 100644
--- a/src/single_window/main_window.cpp
+++ b/src/single_window/main_window.cpp
@@ -4,15 +4,10 @@ int Render::MainWindow() {
   ImGui::SetNextWindowPos(ImVec2(0, 0), ImGuiCond_Always);
   ImGui::SetNextWindowSize(ImVec2(main_window_width_, main_window_height_),
                            ImGuiCond_Always);
-  ImGui::Begin("Render", nullptr,
-               ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoTitleBar |
-                   ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoScrollbar);
 
   MenuWindow();
   LocalWindow();
   RemoteWindow();
 
-  ImGui::End();
-
   return 0;
 }
\ No newline at end of file
diff --git a/src/single_window/render.cpp b/src/single_window/render.cpp
index cae78f0..4a2165c 100644
--- a/src/single_window/render.cpp
+++ b/src/single_window/render.cpp
@@ -241,6 +241,15 @@ int Render::Run() {
 
   io.Fonts->Build();
 
+  SDL_GL_GetDrawableSize(main_window_, &main_window_width_real_,
+                         &main_window_height_real_);
+  dpi_scaling_w_ = (float)main_window_width_real_ / (float)main_window_width_;
+  dpi_scaling_h_ = (float)main_window_width_real_ / (float)main_window_width_;
+
+  LOG_INFO("Use dpi scaling [{}x{}]", dpi_scaling_w_, dpi_scaling_h_);
+
+  SDL_RenderSetScale(main_renderer_, dpi_scaling_w_, dpi_scaling_h_);
+
   // Setup Dear ImGui style
   // ImGui::StyleColorsDark();
   ImGui::StyleColorsLight();
diff --git a/src/single_window/render.h b/src/single_window/render.h
index 919103b..83266af 100644
--- a/src/single_window/render.h
+++ b/src/single_window/render.h
@@ -124,6 +124,11 @@ class Render {
   int menu_window_height_ = 30;
   int local_window_width_ = 350;
 
+  int main_window_width_real_ = 960;
+  int main_window_height_real_ = 540;
+  float dpi_scaling_w_ = 1.0f;
+  float dpi_scaling_h_ = 1.0f;
+
   int texture_width_ = 1280;
   int texture_height_ = 720;