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    Coarse Pixel Shading

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    Date
    2014
    Author
    Vaidyanathan, Karthik
    Salvi, Marco
    Toth, Robert
    Foley, Tim
    Akenine-Möller, Tomas
    Nilsson, Jim
    Munkberg, Jacob
    Hasselgren, Jon
    Sugihara, Masamichi
    Clarberg, Petrik
    Janczak, Tomasz
    Lefohn, Aaron
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    Abstract
    We present a novel architecture for flexible control of shading rates in a GPU pipeline, and demonstrate substantially reduced shading costs for various applications. We decouple shading and visibility by restricting and quantizing shading rates to a finite set of screen-aligned grids, leading to simpler and fewer changes to the GPU pipeline compared to alternative approaches. Our architecture introduces different mechanisms for programmable control of the shading rate, which enables efficient shading in several scenarios, e.g., rendering for high pixel density displays, foveated rendering, and adaptive shading for motion and defocus blur. We also support shading at multiple rates in a single pass, which allows the user to compute different shading terms at rates better matching their frequency content.
    BibTeX
    @inproceedings {hpg.20141089,
    booktitle = {Eurographics/ ACM SIGGRAPH Symposium on High Performance Graphics},
    editor = {Ingo Wald and Jonathan Ragan-Kelley},
    title = {{Coarse Pixel Shading}},
    author = {Vaidyanathan, Karthik and Salvi, Marco and Toth, Robert and Foley, Tim and Akenine-Möller, Tomas and Nilsson, Jim and Munkberg, Jacob and Hasselgren, Jon and Sugihara, Masamichi and Clarberg, Petrik and Janczak, Tomasz and Lefohn, Aaron},
    year = {2014},
    publisher = {The Eurographics Association},
    ISSN = {2079-8679},
    ISBN = {978-3-905674-60-6},
    DOI = {10.2312/hpg.20141089}
    }
    URI
    http://dx.doi.org/10.2312/hpg.20141089
    https://diglib.eg.org:443/handle/10.2312/hpg.20141089
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