diff --git a/src/Window_Carbon.c b/src/Window_Carbon.c
index 47f5bf93e..2f1dbc439 100644
--- a/src/Window_Carbon.c
+++ b/src/Window_Carbon.c
@@ -543,7 +543,11 @@ cc_result Window_ExitFullscreen(void) {
 	return res;
 }
 
-int Window_IsObscured(void) { return 0; }
+int Window_IsObscured(void) {
+	/* TODO: This isn't a complete fix because it doesn't check for occlusion - */
+	/*  so you'll still get 100% CPU usage when window is hidden in background */
+	return IsWindowCollapsed(win_handle);
+}
 
 void Window_Show(void) {
 	ShowWindow(win_handle);
diff --git a/src/interop_cocoa.m b/src/interop_cocoa.m
index 6e24efd73..1895c9594 100644
--- a/src/interop_cocoa.m
+++ b/src/interop_cocoa.m
@@ -10,6 +10,7 @@ static int windowX, windowY;
 static NSApplication* appHandle;
 static NSWindow* winHandle;
 static NSView* viewHandle;
+static cc_bool canCheckOcclusion;
 
 /*########################################################################################################################*
 *---------------------------------------------------Shared with Carbon----------------------------------------------------*
@@ -287,6 +288,8 @@ static void DoCreateWindow(int width, int height) {
 	RefreshWindowBounds();
 	MakeContentView();
 	ApplyIcon();
+    
+    canCheckOcclusion = [winHandle respondsToSelector:@selector(occlusionState)];
 }
 void Window_Create2D(int width, int height) { DoCreateWindow(width, height); }
 void Window_Create3D(int width, int height) { DoCreateWindow(width, height); }
@@ -323,7 +326,16 @@ cc_result Window_ExitFullscreen(void) {
 	return 0;
 }
 
-int Window_IsObscured(void) { return 0; }
+// NOTE: Only defined since macOS 10.9 SDK
+#define _NSWindowOcclusionStateVisible (1 << 1)
+int Window_IsObscured(void) {
+    if (!canCheckOcclusion)
+        return [winHandle isMiniaturized];
+    
+    // covers both minimised and hidden behind another window
+    int flags = [winHandle occlusionState];
+    return !(flags & _NSWindowOcclusionStateVisible);
+}
 
 void Window_Show(void) { 
 	[winHandle makeKeyAndOrderFront:appHandle];