Some devices, such as ARM processors, have no floating-point capability built in, which yields very different performance characteristics. The .NET Compact Framework provides classes for fixed-point formats to provide better performance in cases where large amounts of floating-point math can be avoided.

The .NET Compact Framework provides the following classes and structures that are unique to mobile applications:

• AlreadyLockedException class

• BlendOperationCaps structure

• ColorValueFixed structure

• CustomVertex..::.PositionNormalFixed structure

• DriverUnsupportedException class

• FixedPoint structure

• LightFixed class

• LightsFixedCollection class

• MaterialFixed structure

• MatrixFixed structure

• MemoryPoolEmptyException class

• SurfaceCaps structure

• Vector3Fixed structure

Developers should consider the much lower processing power and RAM available under mobile development and plan resource usage accordingly. Files and loaded resources for content are likely stored in RAM, not on a hard drive or in dedicated video memory. Thus a similar amount of content can occupy far more RAM on a mobile device than it would on a desktop computer.

For information about what objects to re-create when a device is reset, see Managing Device Resources.

The following samples demonstrate Windows Mobile Direct3D:

• Managed Direct3D Mobile Samples

  Contains 15 samples and tutorials.

• Direct3D Mobile UltimateGMan Game Sample

  A game that demonstrates managed mobile Direct3D capabilities.

Other Resources