Supports Pixel Light?

Is there any way to figure out if a computer supports pixel lights? I thought it would be something like: SystemInfo.SupportsPixelLights. But this doesn’t exist. Any ideas?

Thanks

Because that totally depends on the shader in question. For example, Diffuse shader can be rendered in pixel lit mode on a three-texture card (any Radeon, GeForce 3 and up), while something like a parallax shader would need a fragment program capable card to render itself in pixel lit mode.