Can I get a surface color that includes realtime lighting?

Is there any way to get a color value for a point on a surface which includes both the texture and realtime lighting?

I can get the texture value easily enough with texture.getpixel, but that won't include any lighting considerations. The only lighting solutions I've found seem to involve reading the values from a lightmap; but I have no lightmaps as the lights are realtime. so I'm a bit stumped but surely this must be possible?