从Windows Phone 8 Developer Docs整理的关于XNA记录（Preview）

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XNA Framework and Windows Phone 8 development
　　

You cannot create new XNAprojects that target Windows Phone 8 Developer Preview
　　Youcannot create new XNA projects, that target Windows Phone 8 Developer Preview.If you select an XNA project template, then you can only choose Windows PhoneOS 7.1 as the target operating system.

You cannot upgrade existing XNAprojects to target Windows Phone 8 Developer Preview
　　Youcannot upgrade existing XNA projects, to target Windows Phone 8 DeveloperPreview.

You can continue to develop andmaintain XNA projects that target Windows Phone 7.1
　　You cancontinue to develop and maintain new or existing XNA projects, that targetWindows Phone 7.1.

You can use certain XNAFramework assemblies in projects that target Windows Phone 8 Developer Preview
　　You canreference and use the following XNA Framework assemblies in apps that targetWindows Phone 8 Developer Preview:

• Microsoft.Xna.Framework.dll
  
• Microsoft.Xna.Framework.Input.Touch.dll
  
• Microsoft.Xna.Framework.Audio.dll
  
• Microsoft.Xna.Framework.Media.dll
  
• Microsoft.Xna.Framework.MediaLibraryExtensions.dll
  
• Microsoft.Xna.Framework.GamerServices.dll
  
• Microsoft.Xna.Framework.GamerServicesExtensions.dll
  

　　
　　
Game
　　

DirectX forWindows Phone
　　

MicrosoftMedia Foundation for Windows Phone
　　Applies to: Windows Phone 8 DeveloperPreview only
　　
　　MicrosoftMedia Foundation (MF) is a framework for audio and video capture and playbackfor the desktop. Microsoft Media Foundation for Windows Phone is areimplementation of a subset of the MF APIs. This feature enables Windows Phone8 Developer Preview apps to implement the following scenarios.

• Rendering video to textures inapps that use native code.
  
• Displaying cinematics forgames.
  
• Playing in-game backgroundaudio in apps that use native code, such as a game soundtrack.
  

　　

XAML andDirect3D apps for Windows Phone
　　
　　Applies to: Windows Phone 8 Developer Preview only
　　
　　With Windows Phone 8 Developer Preview, youcan use Direct3D to render graphics that are displayed behind or inline withXAML controls and content. With the DrawingSurfaceBackgroundGrid control, yourgraphics are displayed across the entire screen, below any other XAML elementson the page, including any elements in the frame. With the DrawingSurfacecontrol, you can choose an area of the screen to draw on. The size and layoutof your drawing surface are handled just as they are with other XAML controls. Bothof these controls require your application to create a Windows Phone Runtimecomponent defining a class that implements an interface, eitherIDrawingSurfaceBackgroundContentProvider or IDrawingSurfaceCOntentProvider, andhosts the actual Direct3D drawing code. To receive touch input, your class mustalso implement IDrawingSurfaceManipulationHost.
　　

Native audioAPIs for Windows Phone 8
　　
　　Applies to: Windows Phone 8 DeveloperPreview only
　　
　　WindowsPhone 8 Developer Preview apps can use the WASAPI and XAudio2 APIs to play andprocess audio and manage audio streams. This topic describes these interfacesand some of the differences between the desktop and phone implementations.
　　
　　Thistopic contains the following sections.