示例#1
0
        private RGBColor SampleLight(Vector2 uv, Scene scene, Vector2 lightSampleDirection, int maxRecursionDepth = 16)
        {
            var ray = new Ray(uv, lightSampleDirection);

            (var t, var shape) = Raymarcher.March(ray);
            if (t < Raymarcher.MinMarchDistance)
            {
                return(shape.Material.DiffuseColor);
            }
            if (t < Raymarcher.MaxMarchDistance)
            {
                if (shape.Material.Reflectivity > 0 && maxRecursionDepth > 0)
                {
                    var p            = ray.GetPoint(t);
                    var normal       = scene.NormalAtPoint(p);
                    var reflectedRay = Vector2.Reflect(lightSampleDirection, normal);
                    var light        = shape.Material.Intensity * shape.Material.EmissiveColor;
                    var reflected    = SampleLight(p + 0.001 * reflectedRay, scene, reflectedRay, maxRecursionDepth - 1);
                    return((1.0 - shape.Material.Reflectivity) * light + shape.Material.Reflectivity * reflected);
                }

                // TODO: Refraction
                return(shape.Material.Intensity * shape.Material.EmissiveColor);
            }
            else if (t > Raymarcher.MaxMarchDistance)
            {
                return(scene.AmbientColor);
            }
            return(RGBColor.Black);
        }
示例#2
0
        public void Render(Camera camera, Scene scene, string outputFileName)
        {
            WriteRenderInfo(camera);
            var nmd = new NormalMapDebugger(camera, scene);

            SceneDistanceBuffer = new SceneDistanceBuffer(camera, scene);
            SceneDistanceBuffer.SaveToFile();
            Status     = new RenderStatus(camera.DevicePixelHeight);
            Raymarcher = new Raymarcher(scene, SceneDistanceBuffer);
            var nCores = Environment.ProcessorCount;
            var yLines = Enumerable.Range(0, camera.DevicePixelHeight).ToList();

            Parallel.ForEach(yLines, (y) => RenderRow(camera, scene, y));
            Console.WriteLine();
            camera.SaveToFile(outputFileName);
        }