From e3411670cb7ba7c44d1ab6e27a69fa61fd46b2f2 Mon Sep 17 00:00:00 2001
From: joevt <joevt@shaw.ca>
Date: Wed, 20 Mar 2024 04:38:01 -0700
Subject: [PATCH] videoctrl: Add cursor_dirty flag.

If the flag is set when it comes time to draw the cursor again, then call setup_hw_cursor to update the cursor before drawing the cursor.
---
 devices/video/videoctrl.cpp | 4 ++++
 devices/video/videoctrl.h   | 1 +
 2 files changed, 5 insertions(+)

diff --git a/devices/video/videoctrl.cpp b/devices/video/videoctrl.cpp
index 71151f1..988d20f 100644
--- a/devices/video/videoctrl.cpp
+++ b/devices/video/videoctrl.cpp
@@ -75,6 +75,10 @@ void VideoCtrlBase::update_screen()
     }
 
     if (draw_fb) {
+        if (this->cursor_dirty) {
+            this->setup_hw_cursor();
+            this->cursor_dirty = false;
+        }
         this->display.update(
             this->convert_fb_cb, this->cursor_ovl_cb,
             this->cursor_on, cursor_x, cursor_y);
diff --git a/devices/video/videoctrl.h b/devices/video/videoctrl.h
index 855d6de..05f8458 100644
--- a/devices/video/videoctrl.h
+++ b/devices/video/videoctrl.h
@@ -75,6 +75,7 @@ protected:
     bool        crtc_on = false;
     bool        blank_on = true;
     bool        cursor_on = false;
+    bool        cursor_dirty = false;
     int         active_width;   // width of the visible display area
     int         active_height;  // height of the visible display area
     int         hori_total = 0;