44-Issue 8

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https://diglib.eg.org/handle/10.2312/3607201

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Browsing 44-Issue 8 by Subject "Computing methodologies → Rendering"

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    Spherical Harmonic Exponentials for Efficient Glossy Reflections
    (The Eurographics Association and John Wiley & Sons Ltd., 2025) Silvennoinen, Ari; Sloan, Peter-Pike; Iwanicki, Michal; Nowrouzezahrai, Derek; Knoll, Aaron; Peters, Christoph
    We propose a high-performance and compact method for computing glossy specular reflections. Commonly-used prefiltered environment maps have large storage requirements and high error due to constrained treatment of view-dependence. We propose a factorized spherical harmonic exponential representation that exploits new observations of the benefits of log-space reconstruction for reflectance. Our method is compact, properly accounts for view-dependent reflections, and is more accurate than the state-of-the-industry solutions. We achieve higher quality results with an order of magnitude less memory, all with efficient and alias-free reconstruction of glossy reflections from environment lights and continuously-varying material roughness.