public byte[] Render(Scene s)
{
var j = 0;
for (int y = 0; y < Height; y++)
{
var i = y * Stride;
for (int x = 0; x < Width; x++)
{
var color = Vector3.Zero;
var u = _screenPoints[j++];
var v = _screenPoints[j++];
for (int n = 0; n < SAMPLE_COUNT; n++)
{
var u1 = Helper.RandomGaussValue(u, _sigmaX);
var v1 = Helper.RandomGaussValue(v, _sigmaX);
color += s.Sample(u1, v1, Settings);
}
color /= SAMPLE_COUNT;
_data[i++] = Helper.Clamp8(Helper.GammaCorrectionToSRGB(color.X) * 255);
_data[i++] = Helper.Clamp8(Helper.GammaCorrectionToSRGB(color.Y) * 255);
_data[i++] = Helper.Clamp8(Helper.GammaCorrectionToSRGB(color.Z) * 255);
}
}
return(_data);
}
public Color3 TraceRay(int x, int y, RNG rng)
{
float v = (float)y / Screen.Height;
float u = (float)x / Screen.Width;
Color3 color = new Color3(0, 0, 0);
var strat = new Stratifier(rng, _sampleSizeX, _sampleSizeY);
for (int i = 0; i < SampleSize; i++)
{
var pos = strat.GetRandomPointInStratum(i);
var dx = pos.X / Screen.Width;
var dy = pos.Y / Screen.Height;
var r = _camera.CreatePrimaryRay(u + dx, v + dy);
color += _scene.Sample(r, rng, false);
}
color /= SampleSize;
return(color);
}