public override void GetBackBufferData <T>(Rectangle?rect, T[] data, int startIndex, int elementCount)
{
if (rect.HasValue)
{
XNA.Rectangle r;
Rectangle temp = rect.Value;
XNAHelper.ConvertRectangle(ref temp, out r);
_graphicsDevice.GetBackBufferData <T>(r, data, startIndex, elementCount);
}
else
{
_graphicsDevice.GetBackBufferData <T>(null, data, startIndex, elementCount);
}
}