public override sealed void Render()
{
if (_bitmapLock.TryEnterReadLock(20))
{
//绘制缓冲图像
BufferBitmapRenderTarget.BeginDraw();
Render(BufferBitmapRenderTarget);
BufferBitmapRenderTarget.EndDraw();
SurfaceRenderTarget.BeginDraw();
SurfaceRenderTarget.DrawBitmap(BufferBitmapRenderTarget.Bitmap, 1,
BitmapInterpolationMode.Linear);
SurfaceRenderTarget.EndDraw();
_bitmapLock.ExitReadLock();
}
}
public override sealed void Render()
{
var captureTime = _foregroundBitmap.TimeStamps["CaptureTime"];
ProcessTimeSpan = DateTime.Now - captureTime;
BufferBitmapRenderTarget.Bitmap.CopyFromMemory(_foregroundBitmap.Buffer,
_foregroundBitmap.Stride);
BufferBitmapRenderTarget.BeginDraw();
Render(BufferBitmapRenderTarget);
BufferBitmapRenderTarget.EndDraw();
//渲染缓冲图像到界面
SurfaceRenderTarget.BeginDraw();
//重要操作，清理以前绘制结果为透明黑色背景，无此行界面绘制结果会累加
SurfaceRenderTarget.Clear(null);
SurfaceRenderTarget.DrawBitmap(BufferBitmapRenderTarget.Bitmap, 1,
BitmapInterpolationMode.Linear);
SurfaceRenderTarget.EndDraw();
}