public void AdvancePaths(FilmFrame fframe)
{
for (int i = 0; i < populationSize; i++)
{
var pathRadiance = EvaluatePath(paths[i].Vertices);
var offset = (int)(Width * paths[i].Sample.ImageY + paths[i].Sample.ImageX);
fframe.Data[offset] += pathRadiance;
fframe.Weight[offset] += 1f;
}
}
public override void StartRendering(Action<IFilmFrame, int> taskCallback, Action<IFilmFrame> endTaskCallback)
{
var filmFrame = new FilmFrame(Width, Height);
Console.Write("Rendering :[");
#if PL
Parallel.For(0, Height, new ParallelOptions() { CancellationToken = this.cancelToken.Token, MaxDegreeOfParallelism = CpuThreadsUsed }, ( y) =>
#else
for (int y = 0; y < height; y++)
#endif
{
for (int x = 0; x < Width; x++)
{
for (int n = 0; n < this.samplesPerPixel; n++)
{
int ny = y;
IRay ray;
camera.GetRay(x + (1f - rnd.Value.NextFloat()), (ny) + (1f - rnd.Value.NextFloat()), out ray);
var pixelColor = Trace((RayInfo) ray, 1.0f, Air, 0);
if (!pixelColor.IsBlack())
{
//unchecked
{
filmFrame.Data[unchecked(x + y * Width)] = pixelColor;
filmFrame.Weight[unchecked(x + y * Width)] += 1f;
}
}
}
}
//for( int x=0; x<width;x++ )
// output.SetPixel(pixels[x + y * width].X, pixels[x + y * width].Y, (pixels[x + y * width].Data / pixels[x + y * width].Weight).ToColor());
taskCallback(filmFrame, y);
}
#if PL
);
#endif
if (endTaskCallback != null)
endTaskCallback(filmFrame);
}
public override void StartRendering(Action<IFilmFrame, int> taskCallback, Action<IFilmFrame> endTaskCallback)
{
var frame = new FilmFrame(Width, Height);
var start = DateTime.UtcNow;
Console.Write("Rendering :[");
ProcessSamples(frame, taskCallback);
stats.elapsed = DateTime.UtcNow - start;
if (endTaskCallback != null)
endTaskCallback(frame);
Console.WriteLine("{0:F9} MRays /sec", (stats.TotalRays / (double)stats.elapsed.Seconds) * 0.000001);
Console.WriteLine("{0} Shadows samples per path", shadowRayCount);
Console.WriteLine("{0} Triangles", scene.Geometry.Select(item => item.IndexData.Count / 3).Sum());
}
private void ProcessSamples(FilmFrame fframe, Action<IFilmFrame, int> taskCallback)
{
bool done = false;
int iteration = 0;
var sw = new Stopwatch();
sw.Start();
while (!done)
{
for (int i = 0; i < SamplesPerIteration; i++)
{
samples[i] = sampler.GetNextSample(rnd.Value);
}
Parallel.ForEach(samples, new ParallelOptions() { MaxDegreeOfParallelism = CpuThreadsUsed }, sample =>
{
#if VERBOSE
try {
#endif
IRay ray;
camera.GetRay(sample.ImageX, sample.ImageY, out ray);
var eyePathradiance = this.EvaluatePath(PropagatePath((RayInfo)ray, MaxRecursionLevel));
var offset = (int)(Width * sample.ImageY + sample.ImageX);
fframe.Data[offset] += eyePathradiance;
fframe.Weight[offset] += 1f;
stats.totalSamples = Interlocked.Increment(ref stats.totalSamples);
stats.elapsed = sw.Elapsed;
#if VERBOSE
}
catch(Exception ex) {
Console.WriteLine(ex.Message);
Console.WriteLine(ex.StackTrace);
}
#endif
});
taskCallback(fframe, iteration);
iteration++;
done = sampler.SamplesPerPixel < sampler.CurrentPass;
}
sw.Stop();
}