期刊
ACM TRANSACTIONS ON GRAPHICS
卷 39, 期 5, 页码 -出版社
ASSOC COMPUTING MACHINERY
DOI: 10.1145/3406836
关键词
Rendering; surface microstructure; glints; constant storage; procedural by-example noise
资金
- National Key R&D Program of China [2017YFB0203000]
- National Natural Science Foundation of China [61802187, 61872223]
- Natural Science Foundation of Jiangsu [BK20170857]
- fundamental research funds for the central universities [30920021133]
- China Postdoctoral Science Foundation [2020M671500]
Rendering glinty details from specular microstructure enhances the level of realism, but previous methods require heavy storage for the high-resolution height field or normal map and associated acceleration structures. In this article, we aim at dynamically generating theoretically infinitemicrostructure, preventing obvious tiling artifacts, while achieving constant storage cost. Unlike traditional texture synthesis, our method supports arbitrary point and range queries, and is essentially generating the microstructure implicitly. Our method fits the widely used microfacet rendering framework with multiple importance sampling (MIS), replacing the commonly used microfacet normal distribution functions (NDFs) like ground glass distribution (GGX) by a detailed local solution, with a small amount of runtime performance overhead.
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