From f3c889c5d5ec419a714d8d49e7947cc4384c3e07 Mon Sep 17 00:00:00 2001
From: SirLynix <lynix680@gmail.com>
Date: Thu, 16 Jun 2022 19:57:40 +0200
Subject: [PATCH] Examples: Fix crash/high CPU usage when minimized

---
 examples/DeferredShading/main.cpp | 5 +++++
 examples/GraphicsTest/main.cpp    | 5 +++++
 examples/Physics2DDemo/main.cpp   | 5 +++++
 examples/PhysicsDemo/main.cpp     | 5 +++++
 examples/RenderTest/main.cpp      | 5 +++++
 examples/Tut01/main.cpp           | 8 ++++++++
 examples/Tut02/main.cpp           | 8 ++++++++
 7 files changed, 41 insertions(+)

diff --git a/examples/DeferredShading/main.cpp b/examples/DeferredShading/main.cpp
index 8879a0edb..f6223fac2 100644
--- a/examples/DeferredShading/main.cpp
+++ b/examples/DeferredShading/main.cpp
@@ -7,8 +7,10 @@
 #include <NZSL/FieldOffsets.hpp>
 #include <NZSL/Parser.hpp>
 #include <array>
+#include <chrono>
 #include <iostream>
 #include <random>
+#include <thread>
 
 NAZARA_REQUEST_DEDICATED_GPU()
 
@@ -1176,7 +1178,10 @@ int main()
 
 		Nz::RenderFrame frame = window.AcquireFrame();
 		if (!frame)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
 			continue;
+		}
 
 		currentFrame = &frame;
 
diff --git a/examples/GraphicsTest/main.cpp b/examples/GraphicsTest/main.cpp
index da4e02c1d..831bf8682 100644
--- a/examples/GraphicsTest/main.cpp
+++ b/examples/GraphicsTest/main.cpp
@@ -6,7 +6,9 @@
 #include <NZSL/SpirvPrinter.hpp>
 #include <Nazara/Utility.hpp>
 #include <array>
+#include <chrono>
 #include <iostream>
+#include <thread>
 
 int main()
 {
@@ -215,7 +217,10 @@ int main()
 
 		Nz::RenderFrame frame = window.AcquireFrame();
 		if (!frame)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
 			continue;
+		}
 
 		viewerInstance.UpdateViewMatrix(Nz::Matrix4f::TransformInverse(viewerPos, camAngles));
 		viewerInstance.UpdateEyePosition(viewerPos);
diff --git a/examples/Physics2DDemo/main.cpp b/examples/Physics2DDemo/main.cpp
index b0964e63f..cac2a745a 100644
--- a/examples/Physics2DDemo/main.cpp
+++ b/examples/Physics2DDemo/main.cpp
@@ -16,8 +16,10 @@
 #include <Nazara/Widgets.hpp>
 #include <entt/entt.hpp>
 #include <array>
+#include <chrono>
 #include <iostream>
 #include <limits>
+#include <thread>
 
 NAZARA_REQUEST_DEDICATED_GPU()
 
@@ -169,7 +171,10 @@ int main()
 
 		Nz::RenderFrame frame = window.AcquireFrame();
 		if (!frame)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
 			continue;
+		}
 
 		renderSystem.Render(registry, frame);
 
diff --git a/examples/PhysicsDemo/main.cpp b/examples/PhysicsDemo/main.cpp
index 06199aa5e..4ece8a578 100644
--- a/examples/PhysicsDemo/main.cpp
+++ b/examples/PhysicsDemo/main.cpp
@@ -15,8 +15,10 @@
 #include <Nazara/Utility/Components.hpp>
 #include <entt/entt.hpp>
 #include <array>
+#include <chrono>
 #include <iostream>
 #include <limits>
+#include <thread>
 
 NAZARA_REQUEST_DEDICATED_GPU()
 
@@ -360,7 +362,10 @@ int main()
 
 		Nz::RenderFrame frame = window.AcquireFrame();
 		if (!frame)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
 			continue;
+		}
 
 		renderSystem.Render(registry, frame);
 
diff --git a/examples/RenderTest/main.cpp b/examples/RenderTest/main.cpp
index 5ccde48d0..ebbe6f01d 100644
--- a/examples/RenderTest/main.cpp
+++ b/examples/RenderTest/main.cpp
@@ -8,7 +8,9 @@
 #include <NZSL/Ast/SanitizeVisitor.hpp>
 #include <Nazara/Utility.hpp>
 #include <array>
+#include <chrono>
 #include <iostream>
+#include <thread>
 
 NAZARA_REQUEST_DEDICATED_GPU()
 
@@ -322,7 +324,10 @@ int main()
 
 		Nz::RenderFrame frame = window.AcquireFrame();
 		if (!frame)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
 			continue;
+		}
 
 		ubo.viewMatrix = Nz::Matrix4f::TransformInverse(viewerPos, camAngles);
 
diff --git a/examples/Tut01/main.cpp b/examples/Tut01/main.cpp
index 3bf83e431..1c44e72f1 100644
--- a/examples/Tut01/main.cpp
+++ b/examples/Tut01/main.cpp
@@ -7,7 +7,9 @@
 #include <Nazara/Utility.hpp>
 #include <Nazara/Utility/Components.hpp>
 #include <entt/entt.hpp>
+#include <chrono>
 #include <iostream>
+#include <thread>
 
 int main()
 {
@@ -62,6 +64,12 @@ int main()
 		mainWindow.ProcessEvents();
 
 		Nz::RenderFrame renderFrame = mainWindow.AcquireFrame();
+		if (!renderFrame)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
+			continue;
+		}
+
 		renderSystem.Render(registry, renderFrame);
 
 		renderFrame.Present();
diff --git a/examples/Tut02/main.cpp b/examples/Tut02/main.cpp
index 08594a5e9..93bd158a5 100644
--- a/examples/Tut02/main.cpp
+++ b/examples/Tut02/main.cpp
@@ -7,7 +7,9 @@
 #include <Nazara/Utility.hpp>
 #include <Nazara/Utility/Components.hpp>
 #include <entt/entt.hpp>
+#include <chrono>
 #include <iostream>
+#include <thread>
 
 int main()
 {
@@ -79,6 +81,12 @@ int main()
 		mainWindow.ProcessEvents();
 
 		Nz::RenderFrame renderFrame = mainWindow.AcquireFrame();
+		if (!renderFrame)
+		{
+			std::this_thread::sleep_for(std::chrono::milliseconds(1));
+			continue;
+		}
+		
 		renderSystem.Render(registry, renderFrame);
 
 		renderFrame.Present();