辐射度计算光照图

Lightingandshadowcastingalgorithmscanbeveryroughlydividedintotwocategories;DirectIlluminationandGlobalIllumination.Manypeoplewillbefamiliarwiththeformercategory,andtheproblemsassociatedwithit.Thisarticlewillbrieflydiscussthetwoapproaches,thengiveanin-depthstudyofoneGlobalIllumination