From 2ee39578223a066501fd35ab59a6fd413fc518a9 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Wed, 4 Aug 2021 15:58:24 +0200
Subject: [PATCH] Renderer: Add NAZARA_REQUEST_DEDICATED_GPU macro

---
 examples/DeferredShading/main.cpp     |  2 ++
 examples/PhysicsDemo/main.cpp         |  2 ++
 examples/RenderTest/main.cpp          |  2 ++
 include/Nazara/Renderer.hpp           |  1 +
 include/Nazara/Renderer/GpuSwitch.hpp | 20 ++++++++++++++++++++
 5 files changed, 27 insertions(+)
 create mode 100644 include/Nazara/Renderer/GpuSwitch.hpp

diff --git a/examples/DeferredShading/main.cpp b/examples/DeferredShading/main.cpp
index 95b13bff3..ff261d90e 100644
--- a/examples/DeferredShading/main.cpp
+++ b/examples/DeferredShading/main.cpp
@@ -15,6 +15,8 @@
 #include <iostream>
 #include <random>
 
+NAZARA_REQUEST_DEDICATED_GPU()
+
 /*
 [layout(std140)]
 struct PointLight
diff --git a/examples/PhysicsDemo/main.cpp b/examples/PhysicsDemo/main.cpp
index 15f5d378b..d9a7dbaea 100644
--- a/examples/PhysicsDemo/main.cpp
+++ b/examples/PhysicsDemo/main.cpp
@@ -18,6 +18,8 @@
 #include <array>
 #include <iostream>
 
+NAZARA_REQUEST_DEDICATED_GPU()
+
 int main()
 {
 	std::filesystem::path resourceDir = "resources";
diff --git a/examples/RenderTest/main.cpp b/examples/RenderTest/main.cpp
index 7e598fac9..e559f2c74 100644
--- a/examples/RenderTest/main.cpp
+++ b/examples/RenderTest/main.cpp
@@ -8,6 +8,8 @@
 #include <array>
 #include <iostream>
 
+NAZARA_REQUEST_DEDICATED_GPU()
+
 const char shaderSource[] = R"(
 
 option red: bool;
diff --git a/include/Nazara/Renderer.hpp b/include/Nazara/Renderer.hpp
index 2714ea822..4401150fb 100644
--- a/include/Nazara/Renderer.hpp
+++ b/include/Nazara/Renderer.hpp
@@ -36,6 +36,7 @@
 #include <Nazara/Renderer/DebugDrawer.hpp>
 #include <Nazara/Renderer/Enums.hpp>
 #include <Nazara/Renderer/Framebuffer.hpp>
+#include <Nazara/Renderer/GpuSwitch.hpp>
 #include <Nazara/Renderer/RenderBuffer.hpp>
 #include <Nazara/Renderer/RenderBufferView.hpp>
 #include <Nazara/Renderer/RenderDevice.hpp>
diff --git a/include/Nazara/Renderer/GpuSwitch.hpp b/include/Nazara/Renderer/GpuSwitch.hpp
new file mode 100644
index 000000000..a12669876
--- /dev/null
+++ b/include/Nazara/Renderer/GpuSwitch.hpp
@@ -0,0 +1,20 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Renderer module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/Prerequisites.hpp>
+
+#ifdef NAZARA_PLATFORM_WINDOWS
+
+#define NAZARA_REQUEST_DEDICATED_GPU() \
+extern "C" \
+{ \
+	NAZARA_EXPORT unsigned long NvOptimusEnablement = 1; \
+	NAZARA_EXPORT unsigned long AmdPowerXpressRequestHighPerformance = 1; \
+}
+
+#else
+
+#define NAZARA_REQUEST_DEDICATED_GPU()
+
+#endif