private void D3DContent_Paint(object sender, PaintEventArgs e)
{
_device.SetHWND(Handle, ClientSize.Width, ClientSize.Height);
_drawable.Update(_device);
if (_backbuffer == null)
{
_backbuffer = _device.SwapChain.CreateRenderTarget(_device);
}
_backbuffer.Setup(_device,
new Color4(0.5f, 0.5f, 0.5f, 0)
);
_drawable.Draw(_device, 0, 0);
_device.Present();
}
