Пример #1
0
        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);
        }
Пример #2
0
        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);
        }