Direct3D applications can use either the ramp software emulation driver (for the monochromatic color model) or the RGB software emulation driver. The performance notes in the following sections apply to the ramp driver:
Note The ramp software emulation driver is obsolete, and not supported in DirectX 6.0 and later. You cannot create a Direct3D ramp device by using the IDirect3D3 interface, nor can you query an existing ramp device for the IDirect3DDevice3 interface. In short, ramp devices do not support any multiple texture blending options. The notes in this section apply only to using the ramp device with the IDirect3D2, IDirect3DDevice2 or earlier interfaces.