Shell Splatting for Indirect Lighting of Volumes
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Deep Screen Space
Shell Splatting forIndirect Lighting of Volumes
Oliver Nalbach, Tobias Ritschel, Hans-Peter Seidel1OutlinePrevious work: Deep Screen Space
Extension to indirect lighting of volumes10/10/2014Oliver Nalbach Shell Splatting for Indirect Lighting of Volumes2
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"Deep" Screen Space10/10/20143
Deep screen spaceinformationScreen space informationFramebufferOliver Nalbach Shell Splatting for Indirect Lighting of Volumes3Shell Splatting10/10/20144
Level 0Level 1Level 211/41/16Oliver Nalbach Shell Splatting for Indirect Lighting of Volumes4One-Bounce Surface to Volume10/10/20145
Oliver Nalbach Shell Splatting for Indirect Lighting of Volumes5Previous WorkOffline methodsE.g. ray-marching + instant radiosityGeneral but slowRealtime methodsE.g. prefiltered single scatteringFast but limited range of settingsDiffusion-based MethodsE.g. principal ordinate propagationTrade-off, also multiple scattering, but low-frequency indirect light
10/10/20146
Elek et al. 14
Klehm et al. 14
Engelhardt et al. 12Oliver Nalbach Shell Splatting for Indirect Lighting of Volumes6Splatting to Surfaces vs. VolumesSurface10/10/20147
PositionsSegmentsVolumeOliver Nalbach Shell Splatting for Indirect Lighting of Volumes7
Transmittance Interval Map10/10/20148
TransmittanceDepthOliver Nalbach Shell Splatting for Indirect Lighting of Volumes8
Shell-Splatting with Volume Receiver10/10/20149Oliver Nalbach Shell Splatting for Indirect Lighting of Volumes9Jittering10/10/201410
TransmittanceTransmittanceDepthDepthOliver Nalbach Shell Splatting for Indirect Lighting of Volumes10Results10/10/201411
Deep Screen SpaceRay marching / tracing37ms> 1sOliver Nalbach Shell Splatting for Indirect Lighting of Volumes11Results10/10/201412
Oliver Nalbach Shell Splatting for Indirect Lighting of Volumes12ConclusionSupports fully dynamic scenesArbitrarily changing geometryDynamic lightingDeforming, heterogeneous participating mediaProblems / Future WorkLow number of samples dictates low frequency changes in the medium with depthLack of indirect visibility
10/10/201413Oliver Nalbach Shell Splatting for Indirect Lighting of Volumes1310/10/201414Thank you.Project page: http://people.mpi-inf.mpg.de/~onalbach/VolumeSplatting/Contact: onalbach(at)mpi-inf.mpg.deOliver Nalbach Shell Splatting for Indirect Lighting of Volumes14