Comparison of Modern Omnidirectional Precise Shadowing Techniques Versus Ray Tracing

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dc.contributor.authorKobrtek, Jozefen_US
dc.contributor.authorMilet, Tomasen_US
dc.contributor.authorTóth, Michalen_US
dc.contributor.authorHerout, Adamen_US
dc.contributor.editorHauser, Helwig and Alliez, Pierreen_US
dc.date.accessioned2022-03-25T12:31:02Z
dc.date.available2022-03-25T12:31:02Z
dc.date.issued2022
dc.description.abstractThis paper presents an in depth comparison of state‐of‐the‐art precise shadowing techniques for an omnidirectional point light. We chose several types of modern shadowing algorithms, starting from stencil shadow volumes, methods using traversal of acceleration structures to hardware‐accelerated ray‐traced shadows. Some methods were further improved – robustness, increased performance; we also provide the first multi‐platform implementations of some of the tested algorithms. All the methods are evaluated on several test scenes in different resolutions and on two hardware platforms – with and without dedicated hardware units for ray tracing. We conclude our findings based on speed and memory consumption. Ray‐tracing is the fastest and one of the easiest methods to implement with small memory footprint. The Omnidirectional Frustum‐Traced Shadows method has a predictable memory footprint and is the second fastest algorithm tested. Our stencil shadow volumes are faster than some newer algorithms. Per‐Triangle Shadow Volumes and Clustered Per‐Triangle Shadow Volumes are difficult to implement and require the most memory; the latter method scales well with the scene complexity and resolution. Deep Partitioned Shadow Volumes does not excel in any of the measured parameters and is suitable for smaller scenes. The source codes of the testing framework have been made publicly available.en_US
dc.description.number1
dc.description.sectionheadersArticles
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume41
dc.identifier.doi10.1111/cgf.14425
dc.identifier.issn1467-8659
dc.identifier.pages106-121
dc.identifier.urihttps://doi.org/10.1111/cgf.14425
dc.identifier.urihttps://diglib.eg.org:443/handle/10.1111/cgf14425
dc.publisher© 2022 Eurographics ‐ The European Association for Computer Graphics and John Wiley & Sons Ltden_US
dc.subjectshadow algorithms
dc.subjectrendering
dc.subjectray tracing
dc.subjectrendering systems
dc.titleComparison of Modern Omnidirectional Precise Shadowing Techniques Versus Ray Tracingen_US
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