1. A system comprising: at least one processor and a memory operable to present a component of wagering game upon which monetary value may be wagered; and at least one graphics processing unit coupled to the at least one processor, the graphical processor operable to: receive a graphical object for the component, receive a position of a light source, receive a position of a bounding geometry, for each pixel in a set of pixels in the graphical object, performing the actions of: compute a distance from the pixel to an edge of the bounding geometry along a vector including the pixel and the light source, determine a display property of the pixel in accordance with the distance, and display the set of pixels in accordance with the display property of each pixel.