Abstract: A method and system for generating shadows for a graphics processing unit. Specifically, the method determines whether a potential blocker occludes light from reaching a point of a scene in an image space. The light is generated from a light source. A width of a corresponding penumbra is determined for the point. The width is based on a width of the light source, a depth of the potential blocker from the light source, and a depth of a receiver from the light source. The receiver includes the point. A percentage closer filtering kernel size is scaled in proportion to the width of the corresponding penumbra. Thereafter, percentage closer filtering is performed for the point using the kernel size that is scaled in order to shade a pixel corresponding to the point.