![Figure 2. The latlong indexing scheme shown for encoding vectors with a maximum error of 10 @BULLET to make the regions clear (derived from Smith et al.'s [2012] figure 4). Only a few indices are labelled in the diagram.](https://www.researchgate.net/profile/Quirin-Meyer/publication/301612007/figure/fig1/AS:354466923597826@1461522908686/The-latlong-indexing-scheme-shown-for-encoding-vectors-with-a-maximum-error-of-10-BULLET_Q320.jpg)
April 2014
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... Our implementation includes several buffers: the surface parameter buffer, which requires 9 floats (36 bytes per surface), the encoded parameter buffer, utilizing 39 half floats or 78 bytes per surface and an additional 4 bytes for each direction, where a neural sample is requested, are stored in the directional request buffer. The unit direction vector is mapped to an octahedron, stored as 32 bits as in previous works [Cigolle et al. 2014;Meyer et al. 2010]. In our experiments, the NIRC operates on up to 3 non-specular vertices per light path, with a total of 25 neural samples. ...
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April 2014