private void Render(object state)
{
if (!RenderControl.IsDisposed && _stopwatch.ElapsedTicks >= FrameTicks)
{
_stopwatch.Restart();
Bitmap finalBitmpap;
Bitmap screenBitmap;
Bitmap borderBitmap;
_screenBitmapTripleBufferingSystem.TryGetNextConsumerBuffer(out screenBitmap);
if (BorderVisible)
{
_borderBitmapTripleBufferingSystem.TryGetNextConsumerBuffer(out borderBitmap);
using (var g = Graphics.FromImage(_compositeBitmap))
{
g.DrawImage(screenBitmap, _borderedScreenRectangle, _screenRectangle, GraphicsUnit.Pixel);
g.DrawImage(borderBitmap, _borderRectangle, _borderRectangle, GraphicsUnit.Pixel);
}
finalBitmpap = _compositeBitmap;
}
else
{
finalBitmpap = screenBitmap;
}
// Calls to GDI+ should be thread-safe for the most part, so we only have to take a little bit of care for ensuring correctness.
// CreateGraphics is one of the few thread-safe members of Control. :)
using (var g = RenderControl.CreateGraphics())
{
g.CompositingMode = CompositingMode.SourceCopy;
g.CompositingQuality = CompositingQuality.HighSpeed;
g.PixelOffsetMode = PixelOffsetMode.Half;
g.SmoothingMode = SmoothingMode.None;
g.InterpolationMode = InterpolationMode.NearestNeighbor;
g.DrawImage(finalBitmpap, RenderControl.ClientRectangle);
}
}
var tcs = state as TaskCompletionSource <bool>;
if (tcs != null)
{
if (RenderControl.IsDisposed)
{
tcs.TrySetCanceled();
}
else
{
tcs.TrySetResult(true);
}
}
}