Device Behaviors
Microsoft® Direct3D® enables you to specify the behavior of a device, as well the device's type. The IDirect3D8::CreateDevice method enables a combination of one or more of the behavior flags to control the global behaviors of the Direct3D device. These behaviors specify what is and is not maintained in the run-time portion of Direct3D, and the device types specify which driver to use. Although some combinations of device behaviors are not valid, it is possible to use all device behaviors with all device types. For example, it is valid to specify D3DDEVTYPE_SW on a device created with D3DCREATE_PUREDEVICE.
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