Research Of Dynamic Real-Time Global Illumination Based On Radiosity And Light Probes

Global illumination has always been a hot topic in the field of real-time rendering.There have been a lot of related researches in the past.Due to the limitation of hardware performance,the cal-culated global illumination is an approximation of the ground truth,and there are many restrictions,such as the lights and objects must be static.At the same time,in practical application,the global illumination algorithm will bring great performance pressure.This paper introduces a dynamic real-time global illumination algorithm.In this paper's al-gorithm,it can be support that light could be changed and the objects could be transformed in the scene.First bake the light map by real-time radiosity as static scene's global illumination.Then update the global illumination information in light probe by this light map,the information will be used by dynamic objectd.Finally calculate the light field information of the dynamic object to the static scene with the ambient dice.This algorithm has a good performance in room scene.Only when the light of the scene is changed,the global illumination information in the scene needs to be calculated in real time.On the contrary,the scene can be rendered with normal pipeline,with no extra performance cost.This algorithm has been applied to a web application for decoration design tool.Consumer could get the rendering result in real time,instand of waiting for offline rendering by background program.It greatly reduces the pressure of background rendering server and increases the user experience.