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(); }