diff --git a/Demos/LunarG-VulkanSamples/Demos/iOS/DemoViewController.m b/Demos/LunarG-VulkanSamples/Demos/iOS/DemoViewController.m
index 0cd37317..3bdfab6a 100644
--- a/Demos/LunarG-VulkanSamples/Demos/iOS/DemoViewController.m
+++ b/Demos/LunarG-VulkanSamples/Demos/iOS/DemoViewController.m
@@ -42,7 +42,7 @@
 	self.view.contentScaleFactor = UIScreen.mainScreen.nativeScale;
 
 	demo_main(&demo, self.view);
-	demo_update_and_draw(&demo);
+	demo_draw(&demo);
 
 	uint32_t fps = 60;
 	_displayLink = [CADisplayLink displayLinkWithTarget: self selector: @selector(renderLoop)];
@@ -51,7 +51,7 @@
 }
 
 -(void) renderLoop {
-	demo_update_and_draw(&demo);
+	demo_draw(&demo);
 }
 
 @end
diff --git a/Demos/LunarG-VulkanSamples/Demos/macOS/DemoViewController.m b/Demos/LunarG-VulkanSamples/Demos/macOS/DemoViewController.m
index 4c60dcfa..45484e0c 100644
--- a/Demos/LunarG-VulkanSamples/Demos/macOS/DemoViewController.m
+++ b/Demos/LunarG-VulkanSamples/Demos/macOS/DemoViewController.m
@@ -59,7 +59,7 @@ static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink,
 									CVOptionFlags flagsIn,
 									CVOptionFlags* flagsOut,
 									void* target) {
-	demo_update_and_draw((struct demo*)target);
+	demo_draw((struct demo*)target);
 	return kCVReturnSuccess;
 }
 
diff --git a/ExternalRevisions/VulkanSamples_repo_revision b/ExternalRevisions/VulkanSamples_repo_revision
index af3d88e4..1ca38afa 100644
--- a/ExternalRevisions/VulkanSamples_repo_revision
+++ b/ExternalRevisions/VulkanSamples_repo_revision
@@ -1 +1 @@
-d435e00dc9f614155621cdadd2f00fbd0585cda6
+8dc54f70b2f11858b422477e7a9eaa7fb455dee2