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1、ISSN1000-9825,CODENRUXUEWE-mail:jos@iscas.ac.cnJournalofSoftware,Vol.19,No.7,July2008,pp.1783−1793http://www.jos.org.cnDOI:10.3724/SP.J.1001.2008.01783Tel/Fax:+86-10-62562563©2008byJournalofSoftware.Allrightsreserved.∗空间动态可变材质的交互式全局光照明绘制1+21孙鑫,周昆,石教英1(浙江大学CAD/CG国家重点实验室,浙江杭州310027)2(微
2、软亚洲研究院网络图形组,北京100190)InteractiveGlobalIlluminationRenderingwithSpatial-VariantDynamicMaterials1+21SUNXin,ZHOUKun,SHIJiao-Ying1(StateKeyLaboratoryofCAD&CG,ZhejiangUniversity,Hangzhou310027,China)2(InternetGraphicsGroup,MicrosoftResearchAsia,Beijing100190,China)+Correspondingauthor:E-m
3、ail:sunxin@cad.zju.edu.cnSunX,ZhouK,ShiJY.Interactiveglobalilluminationrenderingwithspatial-variantdynamicmaterials.JournalofSoftware,2008,19(7):1783−1793.http://www.jos.org.cn/1000-9825/19/1783.htmAbstract:Thispaperproposesamethodofinteractiveglobalilluminationrenderingwithspatial-v
4、ariantdynamicmaterialsundercomplexillumination.Withthespatial-variantdynamicmaterials,thematerialsofthescenecanbechangedwhilerendering,andthechangestodifferentpartsofanobjectcanbedifferent.Thenon-linearrelationshipbetweenmaterialsandout-goingradiancepreventsusersfromchangingthemateri
5、alswithmostofexistinginteractiveglobalilluminationrenderingalgorithms.Ifdifferentpartsofanobjectarecoveredwithdifferentmaterials,thematerialstakemuchmorecomplexeffectsontheout-goingradiance.Sothereisstillnotaninteractiveglobalilluminationrenderingalgorithmallowuserstomakedifferentcha
6、ngestodifferentpartsofanobject.Thispaperapproximatesaregionwithspatial-variantdynamicmaterialsbydividingitintonumbersofsub-regions,thematerialineachsub-regionisuniformandconsistent.Theradiancetransferredinthescenemaybereflectedbydifferentsub-regionssuccessively,andthepaperdividestheo
7、ut-goingradianceaccordingtodifferentsequencesofthereflectionsub-regions.Thispaperalsorepresentsallmaterialswithalinearbasis,andappliedthebasistoallsub-regionstogetalldifferentdistributionsofthematerialbasis.Thispaperprecomputesallpartsofradianceofallmaterialbasisdistributions.Inrende
8、ringprocess,
