Real-Time Rendering of Eclipses without Incorporation of Atmospheric Effects

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dc.contributor.authorSchneegans, Simonen_US
dc.contributor.authorGilg, Jonasen_US
dc.contributor.authorAhlers, Volkeren_US
dc.contributor.authorGerndt, Andreasen_US
dc.contributor.editorUmetani, Nobuyukien_US
dc.contributor.editorWojtan, Chrisen_US
dc.contributor.editorVouga, Etienneen_US
dc.date.accessioned2022-10-04T06:41:11Z
dc.date.available2022-10-04T06:41:11Z
dc.date.issued2022
dc.description.abstractIn this paper, we present a novel approach for real-time rendering of soft eclipse shadows cast by spherical, atmosphereless bodies. While this problem may seem simple at first, it is complicated by several factors. First, the extreme scale differences and huge mutual distances of the involved celestial bodies cause rendering artifacts in practice. Second, the surface of the Sun does not emit light evenly in all directions (an effect which is known as limb darkening). This makes it impossible to model the Sun as a uniform spherical light source. Finally, our intended applications include real-time rendering of solar eclipses in virtual reality, which require very high frame rates. As a solution to these problems, we precompute the amount of shadowing into an eclipse shadow map, which is parametrized so that it is independent of the position and size of the occluder. Hence, a single shadow map can be used for all spherical occluders in the Solar System. We assess the errors introduced by various simplifications and compare multiple approaches in terms of performance and precision. Last but not least, we compare our approaches to the state-of-the-art and to reference images. The implementation has been published under the MIT license.en_US
dc.description.number7
dc.description.sectionheadersRendering - Modeling Nature and Material
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume41
dc.identifier.doi10.1111/cgf.14676
dc.identifier.issn1467-8659
dc.identifier.pages279-289
dc.identifier.pages11 pages
dc.identifier.urihttps://doi.org/10.1111/cgf.14676
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf14676
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCCS Concepts: Computing methodologies --> Real-time simulation
dc.subjectComputing methodologies
dc.subjectReal
dc.subjecttime simulation
dc.titleReal-Time Rendering of Eclipses without Incorporation of Atmospheric Effectsen_US
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