Abstract: We have developed a system for computing a plausible global illumination solution for dynamic environments in real time on programmable graphics processors (GPUs). The entire algorithm runs on DirectX 9.0 compatible graphics hardware using vertex and fragment shaders, and computes a global illumination solution for reasonably complex scenes with moving objects and moving lights at frame rates of 10-40 fps. We present the salient steps of the algorithm that made this real-time global illumination evaluation possible.