Floating-Point Buffer Compression in a Unified Codec Architecture

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dc.contributor.authorStröm, Jacoben_US
dc.contributor.authorWennersten, Peren_US
dc.contributor.authorRasmusson, Jimen_US
dc.contributor.authorHasselgren, Jonen_US
dc.contributor.authorMunkberg, Jacoben_US
dc.contributor.authorClarberg, Petriken_US
dc.contributor.authorAkenine-Möller, Tomasen_US
dc.contributor.editorDavid Luebke and John Owensen_US
dc.date.accessioned2013-10-28T10:19:27Z
dc.date.available2013-10-28T10:19:27Z
dc.date.issued2008en_US
dc.description.abstractThis paper presents what we believe are the first (public) algorithms for floating-point (fp) color and fp depth buffer compression. The depth codec is also available in an integer version. The codecs are harmonized, meaning that they share basic technology, making it easier to use the same hardware unit for both types of compression. We further suggest to use these codecs in a unified codec architecture, meaning that compression/decompression units previously only used for color- and depth buffer compression can be used also during texture accesses. Finally, we investigate the bandwidth implication of using this in a unified cache architecture. The proposed fp16 color buffer codec compresses data down to 40% of the original, and the fp16 depth codec allows compression down to 4.5 bpp, compared to 5.3 for the state-of-the-art int24 depth compression method. If used in a unified codec and cache architecture, bandwidth reductions of about 50% are possible, which is significant.en_US
dc.description.seriesinformationGraphics Hardwareen_US
dc.identifier.isbn978-3-905674-09-5en_US
dc.identifier.issn1727-3471en_US
dc.identifier.urihttps://doi.org/10.2312/EGGH/EGGH08/075-084en_US
dc.publisherThe Eurographics Associationen_US
dc.subjectCategories and Subject Descriptors (according to ACM CCS): I.3.1 [Computer Graphics]: Hardware Architecture - Graphics processors; E.4 [Data]: Coding and Information Theory - Data compaction and compressionen_US
dc.titleFloating-Point Buffer Compression in a Unified Codec Architectureen_US
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EGGH08: SIGGRAPH/Eurographics Workshop on Graphics Hardware 2008