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How to Use WARP

Direct3D 10, 10.1, and 11 components can use an additional driver type that you can specify when you create the device (for example, when you call the D3D11CreateDevice function). This driver type is D3D10_DRIVER_TYPE_WARP or D3D_DRIVER_TYPE_WARP. When you specify this driver type, the runtime creates a WARP device and does not initialize a hardware device.

Because WARP uses the same software interface to Direct3D as the reference rasterizer does, any Direct3D 10 or 10.1 application that can support running with the reference rasterizer can be tested by using WARP. To use WARP, rename D3d10warp.dll to D3d10ref.dll and place it in the same folder as the sample or application. Next, when you switch to ref, you will see WARP rendering.

If you rename WARP to D3d10ref.dll and place it in C:\Program Files (x86)\Microsoft DirectX SDK (June 2010)\Samples\C++\Direct3D\Bin\x86, you can run all the DirectX samples against WARP, either by clicking the "Toggle Ref" button in the sample, or by running the sample with /ref specified on the command line.