From 4bf9172a8e4f76842a2e011671cf5c057e8fe1d1 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sun, 23 Apr 2023 10:03:02 +0200
Subject: Replace internal fl_create_offscreen() calls by new Fl_Image_Surface

---
 src/drivers/Cocoa/Fl_Cocoa_Window_Driver.cxx | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

(limited to 'src/drivers/Cocoa')

diff --git a/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.cxx b/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.cxx
index 4d3c3ab3d..e479a4d8b 100644
--- a/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.cxx
+++ b/src/drivers/Cocoa/Fl_Cocoa_Window_Driver.cxx
@@ -54,20 +54,18 @@ void Fl_Cocoa_Window_Driver::flush_overlay()
   if (!oWindow->shown()) return;
   pWindow->make_current(); // make sure fl_gc is non-zero
   if (!other_xid) {
-    other_xid = fl_create_offscreen(oWindow->w(), oWindow->h());
+    other_xid = new Fl_Image_Surface(oWindow->w(), oWindow->h(), 1);
     oWindow->clear_damage(FL_DAMAGE_ALL);
   }
   if (oWindow->damage() & ~FL_DAMAGE_EXPOSE) {
     Fl_X *myi = Fl_X::flx(pWindow);
     fl_clip_region(myi->region); myi->region = 0;
-    fl_begin_offscreen(other_xid);
+    Fl_Surface_Device::push_current(other_xid);
     draw();
-    fl_end_offscreen();
+    Fl_Surface_Device::pop_current();
   }
   if (erase_overlay) fl_clip_region(0);
-  if (other_xid) {
-    fl_copy_offscreen(0, 0, oWindow->w(), oWindow->h(), other_xid, 0, 0);
-  }
+  fl_copy_offscreen(0, 0, oWindow->w(), oWindow->h(), other_xid->offscreen(), 0, 0);
   if (overlay() == oWindow) oWindow->draw_overlay();
 }
 
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