private void UninitializeResources()
{
if (_renderTarget == null)
return;
// Unassign back buffer from D3DImage.
Lock();
SetBackBuffer(D3DResourceType.IDirect3DSurface9, IntPtr.Zero, true);
#else
SetBackBuffer(D3DResourceType.IDirect3DSurface9, IntPtr.Zero);
Unlock();
// Dispose resources.
_query.SafeDispose();
_query = null;
_isFrameReady = true; // Set to true while nothing is being rendered.
_stagingResource9.SafeDispose();
_stagingResource9 = null;
_surface9.SafeDispose();
_surface9 = null;
_texture9.SafeDispose();
_texture9 = null;
_stagingResource11.SafeDispose();
_stagingResource11 = null;
_texture11.SafeDispose();
_texture11 = null;
_renderTarget.SafeDispose();
_renderTarget = null;
}