From d4c2e7ec2ef4e039539922aa43e64d95e731c0ab Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Wed, 11 Oct 2023 11:49:38 +0300
Subject: [PATCH] [macOS, 3.x] Use occlusionState to determine when window is
 drawable.

---
 platform/osx/os_osx.h  | 1 +
 platform/osx/os_osx.mm | 7 ++++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/platform/osx/os_osx.h b/platform/osx/os_osx.h
index d1ff0f3cb45..28cdaad3eb4 100644
--- a/platform/osx/os_osx.h
+++ b/platform/osx/os_osx.h
@@ -135,6 +135,7 @@ public:
 	bool resizable;
 	bool window_focused;
 	bool on_top;
+	bool is_visible;
 
 	Size2 window_size;
 	Rect2 restore_rect;
diff --git a/platform/osx/os_osx.mm b/platform/osx/os_osx.mm
index c540093bbe0..3b19600560e 100644
--- a/platform/osx/os_osx.mm
+++ b/platform/osx/os_osx.mm
@@ -463,6 +463,10 @@ static NSCursor *cursorFromSelector(SEL selector, SEL fallback = nil) {
 	OS_OSX::singleton->window_focused = true;
 };
 
+- (void)windowDidChangeOcclusionState:(NSNotification *)notification {
+	OS_OSX::singleton->is_visible = ([OS_OSX::singleton->window_object occlusionState] & NSWindowOcclusionStateVisible) && [OS_OSX::singleton->window_object isVisible];
+}
+
 @end
 
 @interface GodotContentView : NSOpenGLView <NSTextInputClient> {
@@ -2410,7 +2414,7 @@ String OS_OSX::get_system_dir(SystemDir p_dir, bool p_shared_storage) const {
 }
 
 bool OS_OSX::can_draw() const {
-	return true;
+	return is_visible;
 }
 
 void OS_OSX::set_clipboard(const String &p_text) {
@@ -3568,6 +3572,7 @@ OS_OSX::OS_OSX() {
 	im_position = Point2();
 	layered_window = false;
 	autoreleasePool = [[NSAutoreleasePool alloc] init];
+	is_visible = true;
 
 	eventSource = CGEventSourceCreate(kCGEventSourceStateHIDSystemState);
 	ERR_FAIL_COND(!eventSource);