From a9f1a29868156b95bd33521b5de57c981ba99888 Mon Sep 17 00:00:00 2001
From: David Williams <david@volumesoffun.com>
Date: Fri, 5 Sep 2014 16:06:40 +0200
Subject: [PATCH] Adding Vector performance test.

---
 tests/testvector.cpp | 22 ++++++++++++++++++++++
 tests/testvector.h   |  1 +
 2 files changed, 23 insertions(+)

diff --git a/tests/testvector.cpp b/tests/testvector.cpp
index 78d24383..08649f28 100644
--- a/tests/testvector.cpp
+++ b/tests/testvector.cpp
@@ -29,6 +29,12 @@ freely, subject to the following restrictions:
 
 using namespace PolyVox;
 
+Vector3DFloat incrementVector(Vector3DFloat input)
+{
+	Vector3DFloat result = input += 1.0f;
+	return result;
+}
+
 void TestVector::testLength()
 {
 	Vector3DInt8 vec(3, 4, 5);
@@ -51,4 +57,20 @@ void TestVector::testEquality()
 	QCOMPARE(vecxy != vecz, true);
 }
 
+void TestVector::testPerformance()
+{
+	Vector3DFloat vec(1.0, 1.0, 1.0);
+
+	QBENCHMARK
+	{
+		for(uint32_t ct = 0; ct < 10000000; ct++)
+		{
+			vec = incrementVector(vec);
+		}
+	}
+
+	// Use the result so the calls don't get optimized away.
+	QCOMPARE(vec.lengthSquared() > 0.0f, true);
+}
+
 QTEST_MAIN(TestVector)
diff --git a/tests/testvector.h b/tests/testvector.h
index baad1e3d..53ed5718 100644
--- a/tests/testvector.h
+++ b/tests/testvector.h
@@ -34,6 +34,7 @@ class TestVector: public QObject
 		void testLength();
 		void testDotProduct();
 		void testEquality();
+		void testPerformance();
 };
 
 #endif