/// <summary>
/// The main render loop callback that is cached in a delegate and is invoked to process main game loop.
/// </summary>
private void RenderLoopCallback()
{
if (Exiting)
{
CompositionTarget.Rendering -= OnCompositionTargetRendering;
if (element != null)
{
element.Dispose();
element = null;
}
return;
}
// run render loop once
RunCallback();
// mark completion of drawing operations
deviceContext.End(queryForCompletion);
// wait until drawing completes
Bool completed;
while (!(deviceContext.GetData(queryForCompletion, out completed) &&
completed))
{
Thread.Yield();
}
// syncronize D3D surface with WPF
if (!element.IsDisposed)
{
element.InvalidateRendering();
}
}