From 6622c2a0b74dfe23d8be8d0203de20a48e24ae3f Mon Sep 17 00:00:00 2001
From: dec05eba <dec05eba@protonmail.com>
Date: Sun, 9 Jul 2023 19:23:01 +0200
Subject: Set fps limit (even when vsync is enabled) for retards who disable
 vsync system-wide

---
 depends/mglpp          |  2 +-
 include/QuickMedia.hpp |  3 +++
 src/QuickMedia.cpp     | 39 +++++++++++++++++++++++++++++++++++----
 3 files changed, 39 insertions(+), 5 deletions(-)

diff --git a/depends/mglpp b/depends/mglpp
index e85ce72..f91ac8b 160000
--- a/depends/mglpp
+++ b/depends/mglpp
@@ -1 +1 @@
-Subproject commit e85ce72f213f182508510a291cd82289dd639b5e
+Subproject commit f91ac8b0fcc801bc6b2d04ebaeffe1feee4437f2
diff --git a/include/QuickMedia.hpp b/include/QuickMedia.hpp
index 0f8837d..ea814e4 100644
--- a/include/QuickMedia.hpp
+++ b/include/QuickMedia.hpp
@@ -242,5 +242,8 @@ namespace QuickMedia {
         int video_max_height = 0;
         std::mutex login_inputs_mutex;
         const char *yt_dl_name = nullptr;
+
+        mgl::Clock update_monitor_max_fps_timer;
+        int monitor_max_fps = 0;
     };
 }
diff --git a/src/QuickMedia.cpp b/src/QuickMedia.cpp
index 25f17d0..051b08d 100644
--- a/src/QuickMedia.cpp
+++ b/src/QuickMedia.cpp
@@ -72,7 +72,23 @@ extern "C" {
 static int FPS_IDLE;
 static const double IDLE_TIMEOUT_SEC = 2.0;
 static const mgl::vec2i AVATAR_THUMBNAIL_SIZE(std::floor(32), std::floor(32));
-static const int FPS_SYNC_TO_VSYNC = 0;
+
+static int monitor_info_get_fps(const XRRModeInfo *mode_info) {
+    double v_total = mode_info->vTotal;
+    if(mode_info->modeFlags & RR_DoubleScan) {
+        v_total *= 2;
+    }
+
+    if(mode_info->modeFlags & RR_Interlace) {
+        v_total /= 2;
+    }
+
+    if(mode_info->hTotal > 0 && v_total > 0.0001) {
+        return std::round((double)mode_info->dotClock / ((double)mode_info->hTotal * v_total));
+    } else {
+        return 0;
+    }
+}
 
 struct Logo {
     const char *dark_theme_path;
@@ -787,7 +803,12 @@ namespace QuickMedia {
         XSetErrorHandler(x_error_handler);
         XSetIOErrorHandler(x_io_error_handler);
 
-        window.set_framerate_limit(FPS_SYNC_TO_VSYNC);
+        monitor_max_fps = 0;
+        for_each_active_monitor_output(disp, [&](const XRRCrtcInfo*, const XRRModeInfo *mode_info) {
+            monitor_max_fps = std::max(monitor_max_fps, monitor_info_get_fps(mode_info));
+        });
+
+        window.set_framerate_limit(monitor_max_fps);
         idle = false;
 
         if(create_directory_recursive(get_cache_dir().join("media")) != 0) {
@@ -1444,8 +1465,16 @@ namespace QuickMedia {
     }
 
     void Program::idle_active_handler() {
-        if(idle)
-            window.set_framerate_limit(FPS_SYNC_TO_VSYNC);
+        if(idle) {
+            if(update_monitor_max_fps_timer.get_elapsed_time_seconds() >= 3.0) {
+                update_monitor_max_fps_timer.restart();
+                monitor_max_fps = 0;
+                for_each_active_monitor_output(disp, [&](const XRRCrtcInfo*, const XRRModeInfo *mode_info) {
+                    monitor_max_fps = std::max(monitor_max_fps, monitor_info_get_fps(mode_info));
+                });
+            }
+            window.set_framerate_limit(monitor_max_fps);
+        }
         idle = false;
         idle_timer.restart();
     }
@@ -3576,6 +3605,8 @@ namespace QuickMedia {
             }
         };
 
+        idle_active_handler();
+
         while (current_page == PageType::VIDEO_CONTENT && window.is_open() && !go_to_previous_page) {
             while (window.poll_event(event)) {
                 common_event_handler(event);
-- 
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