From ac8c01ae57d94f55a4d47c40c1f7491666b9e483 Mon Sep 17 00:00:00 2001
From: jacob1 <jfu614@gmail.com>
Date: Sun, 19 Feb 2017 19:29:41 -0500
Subject: [PATCH] ensure floating point denormals aren't used, they can
 massively lag the air sim

---
 src/PowderToySDL.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/PowderToySDL.cpp b/src/PowderToySDL.cpp
index 23f303840..f9f6b8ce7 100644
--- a/src/PowderToySDL.cpp
+++ b/src/PowderToySDL.cpp
@@ -8,6 +8,8 @@
 #include <direct.h>
 #endif
 #include "SDLCompat.h"
+#include <xmmintrin.h>
+#include <pmmintrin.h>
 #include <iostream>
 #include <sstream>
 #include <string>
@@ -1082,6 +1084,9 @@ int main(int argc, char * argv[])
 	signal(SIGABRT, SigHandler);
 #endif
 
+	_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
+	_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
+
 	GameController * gameController = NULL;
 #if !defined(DEBUG) && !defined(_DEBUG)
 	try {