From 22f0c66abbd02c8d7a66a81cf853f7c7fb84fe17 Mon Sep 17 00:00:00 2001
From: sfan5 <sfan5@live.de>
Date: Sat, 22 Jan 2022 20:38:52 +0100
Subject: Request execution on dedicated GPU on Windows

---
 src/porting.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/porting.cpp b/src/porting.cpp
index f78de39ad..caf9e9be3 100644
--- a/src/porting.cpp
+++ b/src/porting.cpp
@@ -70,6 +70,15 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include <cstdarg>
 #include <cstdio>
 
+#if !defined(SERVER) && defined(_WIN32)
+// On Windows export some driver-specific variables to encourage Minetest to be
+// executed on the discrete GPU in case of systems with two. Portability is fun.
+extern "C" {
+	__declspec(dllexport) DWORD NvOptimusEnablement = 1;
+	__declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 1;
+}
+#endif
+
 namespace porting
 {
 
-- 
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