Light Methods

hey all, i went all out and developed a lighting system for my isometric engine, it does per pixel lighting and the whole bit, very good quality, but as you may have guessed it is extreamly expensive in computation. i though i would ask what other use for lighting in thier isometric games, the lighting is used for actualy ilumination of objects and for obscuring parts of the map, think of being in pitch black dark with a flashlight, here is a screen shot screenshot the screenshot shows a directional spotlight, i wouldnt mind a slight degrade in quality, for a faster computation, and im just curious as to what everyone uses. so all input is apreciated :-) thanks Raymond Jacobs, Profesional Web Applications Developer, Weekend Game Developer, www.EtherealDarkness.com