static void Main(string[] args)
{
var stopwatch = new Stopwatch();
var camera = new Camera(500, 500);
Scene scene = new HelloWorldScene();
Sampler sampler = new StratifiedSampler(pixelSamples: 4, lightSamples: 64);
var renderer = new Renderer(sampler);
stopwatch.Start();
renderer.Render(camera, scene, "images/test.png");
stopwatch.Stop();
Console.WriteLine($"Total render time: {stopwatch.Elapsed}");
}
public void Render()
{
stopwatch = new Stopwatch();
stopwatch.Reset();
if (Constants.NumberOfThreads == 1) //One Thread
{
stopwatch.Start();
ISampler sampler = (ISampler)Activator.CreateInstance(Constants.Sampler);
if (Constants.IsSamplingOn && Constants.NumberOfSamples > 0)
{
Console.WriteLine("Using Supersampling with: " + Constants.NumberOfSamples + " samples!");
for (int i = 0; i < scene.Film.Width; i++)
{
for (int j = 0; j < scene.Film.Height; j++)
{
Color pixelColor = new Color(0, 0, 0);
List <List <Sample> > subPathSamples = new List <List <Sample> >();
List <LightSample> lightSamples = new List <LightSample>();
List <Sample> samples = sampler.CreateSamples();
if (scene.Integrator is PathTraceIntegrator)
{
lightSamples = sampler.GetLightSamples(Constants.MaximalPathLength);
for (int s = 0; s < Constants.MaximalPathLength; s++)
{
subPathSamples.Add(sampler.CreateSamples());
}
foreach (Sample sample in samples)
{
Ray ray = scene.Camera.CreateRay(i + sample.X, j + sample.Y);
pixelColor.Append(scene.Integrator.Integrate(ray, scene.Objects, scene.Lights, sampler, subPathSamples, Randomizer.PickRandomLightSample(lightSamples)));
}
}
else
{
lightSamples = sampler.GetLightSamples();
foreach (Sample sample in samples)
{
Ray ray = scene.Camera.CreateRay(i + sample.X, j + sample.Y);
pixelColor.Append(scene.Integrator.Integrate(ray, scene.Objects, scene.Lights, sampler, subPathSamples, Randomizer.PickRandomLightSample(lightSamples)));
}
}
pixelColor.VoidDiv(samples.Count);
scene.Film.SetPixel(i, j, pixelColor);
}
}
}
else
{
for (int i = 0; i < scene.Film.Width; i++)
{
for (int j = 0; j < scene.Film.Height; j++)
{
Ray ray = scene.Camera.CreateRay(i, j);
Color color = scene.Integrator.Integrate(ray, scene.Objects, scene.Lights, null, null, null);
scene.Film.SetPixel(i, j, color);
}
}
}
stopwatch.Stop();
Debug.WriteLine("Finished rendering in: " + stopwatch.ElapsedMilliseconds + " ms.");
Tonemapper.SaveImage("C:\\Test\\" + scene.FileName, scene.Film);
}
else //More than 1 thread
{
if (Constants.IsSamplingOn && Constants.NumberOfSamples > 0)
{
Debug.WriteLine("Start rendering with: " + Constants.NumberOfThreads + " Threads");
stopwatch.Start();
finishedThreads = 0;
for (int i = 0; i < Constants.NumberOfThreads; i++)
{
ISampler sampler = new StratifiedSampler();
MultiThreadingRenderer renderer = new MultiThreadingRenderer(i, scene.Objects, scene.Lights,
scene.Camera,
scene.Film);
renderer.ThreadDone += HandleThreadDone;
Thread t = new Thread(renderer.Render);
t.Start();
}
}
else
{
stopwatch.Start();
finishedThreads = 0;
for (int i = 0; i < Constants.NumberOfThreads; i++)
{
MultiThreadingRenderer renderer = new MultiThreadingRenderer(i, scene.Objects, scene.Lights,
scene.Camera,
scene.Film);
renderer.ThreadDone += HandleThreadDone;
Thread t = new Thread(renderer.Render);
t.Start();
}
}
}
}
