public override void Render(RayCasting caster, IEnumerable <TiledBitmap.Tile> tiles)
{
#region Progressive Render from http://www.cc.gatech.edu/~phlosoft/photon/
//float resX = caster.Scene.DefaultCamera.ResX; //g.VisibleClipBounds.Width;
//float resY = caster.Scene.DefaultCamera.ResY; //g.VisibleClipBounds.Height;
ManualResetEvent fineshedHandle = new ManualResetEvent(false);
IEnumerable <TiledBitmap.Tile> imgTiles = tiles as IList <TiledBitmap.Tile> ?? tiles.ToList();
int numberOfWorkers = imgTiles.Count();
foreach (var imgTile in imgTiles)
{
caster = caster.Clone();
Tuple <RayCasting, TiledBitmap.Tile> casterTile = new Tuple <RayCasting, TiledBitmap.Tile>(caster, imgTile);
ThreadPool.QueueUserWorkItem(state =>
{
try
{
Tuple <RayCasting, TiledBitmap.Tile> localCasterAndTile = state as Tuple <RayCasting, TiledBitmap.Tile>;
TiledBitmap.Tile tile = localCasterAndTile.Item2;
RayCasting caster1 = localCasterAndTile.Item1;
tile.CompleteCycle(TiledBitmap.RenderCycleType.Start);
int iterations = 0;
int pCol = 0, pRow = 0, pIteration = 1, pMax = 2;
float resTotal = tile.Width * tile.Height;
while (iterations < resTotal)
{
//Render Pixels Out of Order With Increasing Resolution: 2x2, 4x4, 16x16... 512x512
if (pCol >= pMax)
{
pRow++;
pCol = 0;
if (pRow >= pMax)
{
pIteration++;
pRow = 0;
pMax <<= 1; //Equals: pMax = (int)Math.Pow(2, pIteration);
}
}
bool pNeedsDrawing = (pIteration == 1 || (pRow % 2 != 0) || (pRow % 2 == 0 && (pCol % 2 != 0)));
float x = pCol * (tile.Width / pMax) + tile.X;
float y = pRow * (tile.Height / pMax) + tile.Y;
pCol++;
if (pNeedsDrawing)
{
iterations++;
Ray ray;
RGBColor finalColor = RGBColor.Black;
if (caster1.Scene.Sampler.NumberOfSamples > 1)
{
foreach (Point2D sample in caster1.Scene.Sampler.GetSamplesFor(x, y))
{
//ray = this.scene.DefaultCamera.CreateRayFromScreen(x + sample.X, y + sample.Y);
ray = caster1.Scene.DefaultCamera.CreateRayFromScreen(sample.X, sample.Y);
ray.PrevRefractIndex = caster1.Scene.RefractIndex;
finalColor += caster1.Trace(ray, 0);
}
//brush.Color = (finalColor * (1f / this.scene.Sampler.NumberOfSamples)).ToColor();
finalColor = (finalColor / caster1.Scene.Sampler.NumberOfSamples);
//Graphics graphics = Graphics.FromImage(tile.Image);
tile.Graphics.FillRectangle(new SolidBrush(finalColor.ToColor()), x - tile.X, y - tile.Y, (tile.Width / pMax), (tile.Height / pMax));
//graphics.Flush();
//graphics.Dispose();
}
else
{
ray = caster1.Scene.DefaultCamera.CreateRayFromScreen(x, y);
finalColor = caster1.Trace(ray, 0);
// Debug.WriteLine("Graphics: " + tile.Graphics.GetHashCode());
tile.Graphics.FillRectangle(new SolidBrush(finalColor.ToColor()), x - tile.X, y - tile.Y, (tile.Width / pMax), (tile.Height / pMax));
//tile.Graphics.Flush(FlushIntention.Sync);
}
tile.CompleteCycle(TiledBitmap.RenderCycleType.Partial);
}
}
tile.CompleteCycle(TiledBitmap.RenderCycleType.Finish);
}
finally
{
if (Interlocked.Decrement(ref numberOfWorkers) == 0)
{
fineshedHandle.Set();
}
}
}, casterTile);
}//);
fineshedHandle.WaitOne();
#endregion
}
public override void Render(RayCasting caster, IEnumerable <TiledBitmap.Tile> tiles)
{
//float resX = caster.Scene.DefaultCamera.ResX; //g.VisibleClipBounds.Width;
//float resY = caster.Scene.DefaultCamera.ResY; //g.VisibleClipBounds.Height;
//Parallel.ForEach(tiles, tile => {
ManualResetEvent fineshedHandle = new ManualResetEvent(false);
IEnumerable <TiledBitmap.Tile> imgTiles = tiles as IList <TiledBitmap.Tile> ?? tiles.ToList();
numberOfWorkers = imgTiles.Count();
foreach (var imgTile in imgTiles)
{
caster = caster.Clone();
Tuple <RayCasting, TiledBitmap.Tile> casterTile = new Tuple <RayCasting, TiledBitmap.Tile>(caster, imgTile);
//new Thread(state =>
ThreadPool.QueueUserWorkItem(state =>
{
try
{
Tuple <RayCasting, TiledBitmap.Tile> localCasterAndTile = state as Tuple <RayCasting, TiledBitmap.Tile>;
TiledBitmap.Tile tile = localCasterAndTile.Item2;
RayCasting caster1 = localCasterAndTile.Item1;
//Stopwatch timer = new Stopwatch();
//timer.Start();
//Console.WriteLine("Started@" + DateTime.Now.ToString("mm:ss.fff tt"));
float total = tile.Width * tile.Height;
float partial = 0;
for (int y = tile.Y; y < tile.Y + tile.Height; y++)
{
if (cancelRender)
{
break;
}
for (int x = tile.X; x < tile.X + tile.Width; x++)
{
if (cancelRender)
{
break;
}
Ray ray;
RGBColor finalColor = RGBColor.Black;
if (caster1.Scene.Sampler.NumberOfSamples > 1)
{
foreach (Point2D sample in caster1.Scene.Sampler.GetSamplesFor(x, y))
{
ray = caster1.Scene.DefaultCamera.CreateRayFromScreen(sample.X, sample.Y);
ray.PrevRefractIndex = caster1.Scene.RefractIndex;
finalColor += caster1.Trace(ray, 0);
}
finalColor = (finalColor * 1f / caster1.Scene.Sampler.NumberOfSamples);
}
else
{
ray = caster1.Scene.DefaultCamera.CreateRayFromScreen(x, y);
finalColor = caster1.Trace(ray, 0);
}
tile.Image.SetPixel(x - tile.X, y - tile.Y, finalColor.ToColor());
//unsafe
//{
// Bitmap img = tile.Image;
// BitmapData imgData = img.LockBits(new Rectangle(0, 0, img.Width, img.Height), ImageLockMode.ReadOnly, img.PixelFormat);
// byte bitsPerPixel = Texture.GetBitsPerPixel(imgData.PixelFormat);
// byte* scan0 = (byte*)imgData.Scan0.ToPointer();
// byte* data = scan0 + (x - tile.X) * imgData.Stride + (y - tile.Y) * bitsPerPixel / 8;
// data[0] = (byte)(finalColor.R * 255);
// data[1] = (byte)(finalColor.G * 255);
// data[2] = (byte)(finalColor.B * 255);
// img.UnlockBits(imgData);
//}
}
partial += tile.Height;
if (((partial / total) * 100) >= 20)
{
partial = 0;
tile.CompleteCycle(TiledBitmap.RenderCycleType.Partial);
}
}
tile.CompleteCycle(TiledBitmap.RenderCycleType.Finish);
//timer.Stop();
}
finally
{
if (Interlocked.Decrement(ref numberOfWorkers) == 0)
{
fineshedHandle.Set();
cancelHandle.Set();
cancelRender = false;
}
}
}, casterTile);
//}){IsBackground = false}.Start(casterTile);
}//);
cancelHandle.Set();
fineshedHandle.WaitOne();
}