diff --git a/headers/enduro2d/core/debug.hpp b/headers/enduro2d/core/debug.hpp
index 248b6f2f..f92cb4d8 100644
--- a/headers/enduro2d/core/debug.hpp
+++ b/headers/enduro2d/core/debug.hpp
@@ -41,19 +41,19 @@ namespace e2d
         level min_level() const noexcept;
 
         template < typename... Args >
-        void log(level lvl, str_view fmt, Args&&... args);
+        debug& log(level lvl, str_view fmt, Args&&... args);
 
         template < typename... Args >
-        void trace(str_view fmt, Args&&... args);
+        debug& trace(str_view fmt, Args&&... args);
 
         template < typename... Args >
-        void warning(str_view fmt, Args&&... args);
+        debug& warning(str_view fmt, Args&&... args);
 
         template < typename... Args >
-        void error(str_view fmt, Args&&... args);
+        debug& error(str_view fmt, Args&&... args);
 
         template < typename... Args >
-        void fatal(str_view fmt, Args&&... args);
+        debug& fatal(str_view fmt, Args&&... args);
     private:
         mutable std::mutex mutex_;
         level min_level_ = level::trace;
@@ -100,7 +100,7 @@ namespace e2d
     }
 
     template < typename... Args >
-    void debug::log(level lvl, str_view fmt, Args&&... args) {
+    debug& debug::log(level lvl, str_view fmt, Args&&... args) {
         std::lock_guard<std::mutex> guard(mutex_);
         if ( lvl >= min_level_ && !sinks_.empty() ) {
             str text = strings::rformat(fmt, std::forward<Args>(args)...);
@@ -110,25 +110,26 @@ namespace e2d
                 }
             }
         }
+        return *this;
     }
 
     template < typename... Args >
-    void debug::trace(str_view fmt, Args&&... args) {
-        log(level::trace, fmt, std::forward<Args>(args)...);
+    debug& debug::trace(str_view fmt, Args&&... args) {
+        return log(level::trace, fmt, std::forward<Args>(args)...);
     }
 
     template < typename... Args >
-    void debug::warning(str_view fmt, Args&&... args) {
-        log(level::warning, fmt, std::forward<Args>(args)...);
+    debug& debug::warning(str_view fmt, Args&&... args) {
+        return log(level::warning, fmt, std::forward<Args>(args)...);
     }
 
     template < typename... Args >
-    void debug::error(str_view fmt, Args&&... args) {
-        log(level::error, fmt, std::forward<Args>(args)...);
+    debug& debug::error(str_view fmt, Args&&... args) {
+        return log(level::error, fmt, std::forward<Args>(args)...);
     }
 
     template < typename... Args >
-    void debug::fatal(str_view fmt, Args&&... args) {
-        log(level::fatal, fmt, std::forward<Args>(args)...);
+    debug& debug::fatal(str_view fmt, Args&&... args) {
+        return log(level::fatal, fmt, std::forward<Args>(args)...);
     }
 }
diff --git a/samples/sources/sample_00/sample_00.cpp b/samples/sources/sample_00/sample_00.cpp
index 1c48d50a..ed56df53 100644
--- a/samples/sources/sample_00/sample_00.cpp
+++ b/samples/sources/sample_00/sample_00.cpp
@@ -14,15 +14,13 @@ int main() {
     window& w = modules::initialize<window>(
         v2u{640, 480}, "Enduro2D", false, false);
 
-    for ( std::size_t i = 0; i < 2; ++i ) {
-        w.swap_buffers();
-        window::poll_events();
-        std::this_thread::sleep_for(time::to_chrono(make_seconds(2)));
-        w.toggle_fullscreen(!w.fullscreen());
-    }
+    the<debug>()
+        .trace("SAMPLE: window real size: %0", w.real_size())
+        .trace("SAMPLE: window virtual size: %0", w.virtual_size())
+        .trace("SAMPLE: window framebuffer size: %0", w.framebuffer_size());
 
-    auto current_time = time::now_s();
-    while ( !w.should_close() && current_time + make_seconds<i64>(5) < time::now_s() ) {
+    auto closing_time = time::now_s() + make_seconds<i64>(5);
+    while ( !w.should_close() && time::now_s() < closing_time ) {
         w.swap_buffers();
         window::poll_events();
     }
diff --git a/sources/enduro2d/core/window_impl/window_glfw.cpp b/sources/enduro2d/core/window_impl/window_glfw.cpp
index d920d9f0..80564ee9 100644
--- a/sources/enduro2d/core/window_impl/window_glfw.cpp
+++ b/sources/enduro2d/core/window_impl/window_glfw.cpp
@@ -112,6 +112,8 @@ namespace e2d
             glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
             glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 2);
             glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 0);
+            glfwWindowHint(GLFW_SCALE_TO_MONITOR, GLFW_FALSE);
+            glfwWindowHint(GLFW_COCOA_RETINA_FRAMEBUFFER, GLFW_FALSE);
             v2i real_size = fullscreen
                 ? make_vec2(video_mode->width, video_mode->height)
                 : virtual_size.cast_to<i32>();