public void RayIntersectAABBPerformance()
{
#if DEBUG
// my laptop in High Performance mode
const double minMillionRaysPerSec = 0.32;
const double maxMillionRaysPerSec = 0.55;
#elif APPVEYOR_PERFORMANCE_MARGINS
// AppVeyor build server
const double minMillionRaysPerSec = 2.9;
const double maxMillionRaysPerSec = 4.1;
#else
// my laptop in High Performance mode
const double minMillionRaysPerSec = 1.2;
const double maxMillionRaysPerSec = 2.5;
#endif
const int numRays = 1000000;
var box = new AxisAlignedBox(new Vector(-0.5, -0.5, -0.5), new Vector(0.5, 0.5, 0.5));
var numRaysHit = 0;
DateTime startTime = DateTime.Now;
for (var i = 0; i < numRays; i++)
{
//var start = new Vector(0.5, 0.5, 0.5);
var start = MakeRandomVector(-0.3, 0.3, -0.3, 0.3, 0.5, 1);
var dir = MakeRandomVector(-0.5, 0.5, -0.5, 0.5, -1, -1);
//var dir = MakeRandomVector(1, 1, -1);
var info = box.IntersectRay(start, dir, context);
if (info != null)
{
numRaysHit++;
}
}
var elapsedTime = DateTime.Now - startTime;
Assert.IsTrue(numRays * 0.998 < numRaysHit && numRaysHit <= numRays * 1.0, "Num rays hit {0} should be roughly the same as total rays {1}", numRaysHit, numRays);
var millionRaysPerSec = numRays / 1000000.0 / elapsedTime.TotalSeconds;
Assert.IsTrue(minMillionRaysPerSec < millionRaysPerSec && millionRaysPerSec < maxMillionRaysPerSec,
"Rays per second {0:f3} not between {1} and {2} (millions)", millionRaysPerSec, minMillionRaysPerSec, maxMillionRaysPerSec);
Console.WriteLine("Performance: {0} million rays per second", millionRaysPerSec);
}