From 6cbc3e4ebd9c316672c49e43aa64e25e7ea05445 Mon Sep 17 00:00:00 2001
From: fschildt <florian.schildt@protonmail.com>
Date: Sat, 24 Jan 2026 00:55:57 +0100
Subject: main: always draw performance info, add load stats

---
 src/main.cpp | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'src')

diff --git a/src/main.cpp b/src/main.cpp
index ebbaa55..ebf018d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -14,6 +14,7 @@
 #include <memory>
 #include <cstdlib>
 #include <assert.h>
+#include <chrono>
 
 
 Game::GameType
@@ -46,14 +47,17 @@ DrawGameMenu()
 
 
 void
-DrawPerformanceInfo()
+DrawPerformanceInfo(float ms_used)
 {
     ImGuiIO& io = ImGui::GetIO();
     ImGuiWindowFlags flags = ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoBackground | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove;
 
-    ImGui::SetNextWindowPos(ImVec2(io.DisplaySize.x - 200, 0));
+    float ms_per_frame = 1000.0f / io.Framerate;
+    float load = (ms_used / ms_per_frame) * 100;
+
+    ImGui::SetNextWindowPos(ImVec2(io.DisplaySize.x - 350, 0));
     ImGui::Begin("Performance", nullptr, flags);
-    ImGui::Text("%.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);
+    ImGui::Text("%.2f ms/frame (%.2f %%) | %.2f ms/frame (%.f FPS)", ms_used, load, ms_per_frame, io.Framerate);
     ImGui::End();
 }
 
@@ -144,6 +148,8 @@ main(int argc, char** argv)
         ImGui::NewFrame();
 
 
+        auto start_time = std::chrono::high_resolution_clock::now();
+
         size_t cur_game_events = 0;
         size_t max_game_events = game_events.max_size();
 
@@ -187,13 +193,19 @@ main(int argc, char** argv)
                 game = Game::Select(type);
             }
         }
+
         game_events.clear();
+        g_renderer.Draw();
+
+        auto end_time = std::chrono::high_resolution_clock::now();
+        float ms_used = float((end_time - start_time) / std::chrono::microseconds(1)) / 1000;
+        DrawPerformanceInfo(ms_used);
 
 
-        g_renderer.Draw();
         ImGui::Render();
         ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
 
+
         SDL_GL_SwapWindow(window);
         g_renderer.Reset();
         MemoryManager::Clear_Frame();
-- 
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