From 5604866882c00d75763256088c762a445f5ef224 Mon Sep 17 00:00:00 2001
From: boreddevnl <chris@boreddev.nl>
Date: Wed, 18 Mar 2026 18:09:24 +0100
Subject: [PATCH] FIX: Mouse trailing with single core CPU's

---
 src/wm/graphics.c |  4 ++++
 src/wm/graphics.h |  1 +
 src/wm/wm.c       | 22 +++++++++++++++++++---
 3 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/src/wm/graphics.c b/src/wm/graphics.c
index 2d1d32f..5603662 100644
--- a/src/wm/graphics.c
+++ b/src/wm/graphics.c
@@ -171,6 +171,10 @@ void graphics_clear_dirty(void) {
     wm_lock_release(rflags);
 }
 
+void graphics_clear_dirty_no_lock(void) {
+    g_dirty.active = false;
+}
+
 void graphics_set_render_target(uint32_t *buffer, int w, int h) {
     g_render_target = buffer;
     g_rt_width = w;
diff --git a/src/wm/graphics.h b/src/wm/graphics.h
index d4b36a1..d98a558 100644
--- a/src/wm/graphics.h
+++ b/src/wm/graphics.h
@@ -49,6 +49,7 @@ void graphics_mark_dirty(int x, int y, int w, int h);
 void graphics_mark_screen_dirty(void);
 DirtyRect graphics_get_dirty_rect(void);
 void graphics_clear_dirty(void);
+void graphics_clear_dirty_no_lock(void);
 
 // Double buffering
 void graphics_flip_buffer(void);
diff --git a/src/wm/wm.c b/src/wm/wm.c
index 8f9531b..1755bfc 100644
--- a/src/wm/wm.c
+++ b/src/wm/wm.c
@@ -1280,6 +1280,9 @@ void wm_paint(void) {
     
     uint64_t rflags;
     rflags = wm_lock_acquire();
+    
+    wm_mark_dirty(last_cursor_x, last_cursor_y, 12, 12);
+    wm_mark_dirty(mx, my, 12, 12);
 
     DirtyRect dirty = graphics_get_dirty_rect();
     
@@ -1528,6 +1531,7 @@ void wm_paint(void) {
     
     // Flip the buffer - display the rendered frame atomically
     graphics_flip_buffer();
+    graphics_clear_dirty_no_lock();
 
     // Restore IRQs
     wm_lock_release(rflags);
@@ -1612,8 +1616,16 @@ void wm_remove_window(Window *win) {
         }
         window_count--;
         
-        if (active_mouse_capture_win == win) {
-            active_mouse_capture_win = NULL;
+        if (active_mouse_capture_win == win) active_mouse_capture_win = NULL;
+        
+        if (drag_window == win) {
+            is_dragging = false;
+            is_resizing = false;
+            drag_window = NULL;
+        }
+        
+        if (drag_src_win == win) {
+            drag_src_win = NULL;
         }
         
         // Mark for redraw while protected
@@ -1958,6 +1970,11 @@ void wm_handle_right_click(int x, int y) {
     if (mx >= sw) mx = sw - 1;
     if (my >= sh) my = sh - 1;
     
+    if (move_x != 0 || move_y != 0) {
+        wm_mark_dirty(prev_mx, prev_my, 12, 12); // Extra padding for safety
+        wm_mark_dirty(mx, my, 12, 12);
+    }
+    
     if (dz != 0) {
         // Find focused window and send wheel event
         for (int w = 0; w < window_count; w++) {
@@ -2692,7 +2709,6 @@ void wm_process_input(void) {
     DirtyRect dirty = graphics_get_dirty_rect();
     if (dirty.active) {
         wm_paint();
-        graphics_clear_dirty();
     }
 }