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Vectorized visibility is a powerful visibility representation for rendering direct illumination with all frequency quality. However, the existing rendering method requires the visibility functions to be synthesized three times, followed with three radiance evaluation, for each triangle of the 3D model. We propose an alternative method to enhance vectorized visibility, such that we can directly interpolate the vectorized visibility, and therefore, reduce the computation bottleneck, i.e. thedoi:10.1109/access.2021.3084611 fatcat:4wi5kxpafrdn3d2nvmkpmspity