ISwapChain

Begins the process that presents the most recent renderings.

This method should be called as soon as possible after IRenderTarget.Finish has been called.

Ends the process that presents the most recent renderings.

This method should be called at the latest possible point in time, which is either before beginning to render a new frame or when entering the idle state, where no more frames will be rendered unless an external stimulus occurs.

Checks if this swap chain is still valid.

If a swap chain has become invalid, it needs to be disposed and recreated. It is not necessary to recreate any other graphics resources in this case.