Abstract_A_Hardware_Architecture_for.pdf

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1、AHardwareArchitectureforSurfaceSplattingTimWeyrich∗†SimonHeinzle∗TimoAila‡§DanielB.Fasnacht∗StephanOetiker∗MarioBotsch∗CyrilFlaig∗SimonMall∗KasparRohrer∗NorbertFelber∗HubertKaeslin∗MarkusGross∗AbstractWepresentanovelarchitectureforhardware-acceleratedrender-ingofpointprim

2、itives.OurpipelineimplementsarefinedversionofEWAsplatting,ahighqualitymethodforantialiasedrenderingofpointsampledrepresentations.Acentralfeatureofourdesignistheseamlessintegrationofthearchitectureintoconventional,OpenGL-likegraphicspipelinessoastocomplementtriangle-basedre

3、ndering.ThespecificpropertiesoftheEWAalgorithmrequiredavarietyofnoveldesignconceptsincludingaternarydepthtestandusinganon-chippipelinedheapdatastructureformakingthememoryaccessesofsplatprimitivesmorecoherent.Inaddition,wedevelopedacomputationallystableevaluationschemeforpe

4、r-spectivelycorrectedsplats.WeimplementedourarchitecturebothonreconfigurableFPGAboardsandasanASICprototype,andweintegrateditintoanOpenGL-likesoftwareimplementation.Ourevaluationcomprisesadetailedperformanceanalysisusingscenesofvaryingcomplexity.Figure1:Pointrenderingsystem

5、featuringanASICimplementa-CRCategories:I.3.1[COMPUTERGRAPHICS]:HardwareAr-tionofourpointrenderingarchitecture.Thesystemrunsstand-chitecture—GraphicsProcessors;I.3.3[COMPUTERGRAPHICS]:alone,independentfromahostPC.Picture/ImageGeneration—Displayalgorithms;Inpointsamplerende

6、ringtheprimitivestypicallycarryallat-Keywords:3Dgraphicshardware,point-basedrendering,surfacetributesneededfordisplayincludinggeometryandappearance.splatting,rasterization,reordering,datastructuresEarlyframeworksforpointsamplerendering[GrossmanandDally1998;Pfisteretal.2000

7、]suggestedsimpleforwardwarpingof1Introductionpointsamplesintotheframebuffer.Incombinationwithprecom-Inrecentyears,wehavewitnessedadramaticincreaseinthepoly-putedtextureattributestheykeptthearchitecturesimplebytrans-gonalcomplexityofgraphicsmodels,andtrianglesprojectonav-f

8、erringpartsoftherasterizationandfilteringtothepreprocessingeragetofewerandfewerscreen-spacepixels