This class implements the IGraphicsService for a 3D application or game. (See also IGraphicsService for more information.)

The method Update(TimeSpan) must be called once per frame to update the graphics service and the registered graphics screens. The methods Render(Boolean) or Render(IPresentationTarget) must be called to render the screens. Render(Boolean) renders the screens to the back buffer; the XNA game will automatically display this back buffer in the game window.

The method Render(IPresentationTarget) or Render(IPresentationTarget, IListGraphicsScreen) can be used to display graphics in a Windows Forms or WPF application. These methods render the graphics screens into a presentation target. A presentation target (see interface IPresentationTarget) is a Windows Forms control or a WPF control where the graphics can be displayed.

Windows Forms: Windows Forms applications can host a FormsPresentationTarget. The methods Render(IPresentationTarget) or Render(IPresentationTarget, IListGraphicsScreen) can be used to render a scene into this presentation target. The method first renders the graphics screens into the back buffer and then displays the result in the specified presentation target. The method Present(IPresentationTarget) can be used to display the current back buffer content in a presentation target (without re-rendering the screens).

WPF: WPF applications can host an ElementPresentationTarget (legacy) or a D3DImagePresentationTarget (recommended, MonoGame only). The methods Render(IPresentationTarget) or Render(IPresentationTarget, IListGraphicsScreen) can be used to render a scene directly into a D3DImagePresentationTarget.

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